Datasheet EDD5108ABTA-7B, EDD5108ABTA-7A, EDD5108ABTA-6B, EDD5104ABTA-7B, EDD5104ABTA-7A Datasheet (ELPID)

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PRELIMINARY DATA SHEET

512M bits DDR SDRAM

EDD5104ABTA (128M words ×××× 4 bits)

EDD5108ABTA (64M words ×××× 8 bits)

Description

The EDD5104AB is a 512M bits Double Data Rate

(DDR) SDRAM organized as 33,554,432 words × 4 bits × 4 banks. The EDD5108AB is a 512M bits DDR SDRAM organized as 16,777,216 words × 8 bits × 4

banks. Read and write operations are performed at the cross points of the CK and the /CK. This high-speed data transfer is realized by the 2 bits prefetch-pipelined architecture. Data strobe (DQS) both for read and write are available for high speed and reliable data bus design. By setting extended mode resistor, the on-chip Delay Locked Loop (DLL) can be set enable or disable.

They are packaged in standard 66-pin plastic TSOP (II)10.16mm(400).

Features

• 2.5 V power supply: VDDQ = 2.5V ± 0.2V : VDD = 2.5V ± 0.2V

• Data Rate: 333Mbps/266Mbps (max.)

• Double Data Rate architecture; two data transfers per

clock cycle

• Bi-directional, data strobe (DQS) is transmitted

/received with data, to be used in capturing data at the receiver

• Data inputs, outputs, and DM are synchronized with

DQS

• 4 internal banks for concurrent operation

• DQS is edge aligned with data for READs; center

aligned with data for WRITEs

• Differential clock inputs (CK and /CK)

• DLL aligns DQ and DQS transitions with CK

transitions

• Commands entered on each positive CK edge; data

and data mask referenced to both edges of DQS

• Data mask (DM) for write data

• Auto precharge option for each burst access

• 2.5 V (SSTL_2 compatible) I/O

• Programmable burst length (BL): 2, 4, 8

• Programmable /CAS latency (CL): 2, 2.5

• Refresh cycles: 8192 refresh cycles/64ms

 7.8µs maximum average periodic refresh interval

• 2 variations of refresh

 Auto refresh  Self refresh

Document No. E0237E30 (Ver. 3.0) Date Published August 2002 (K) Japan URL: http://www.elpida.com

Pin Configurations

/xxx indicates active low signal.

66-pin TSOP(II)10.16mm(400)

VDD

VDD DQ0

VDDQ

DQ1

VSSQ

DQ2

VDDQ

DQ3

VSSQ

NC NC

VDDQ

NC NC

VDD

NC NC

/WE /CAS /RAS

/CS

NC BA0 BA1

VDD

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

32 33

X 8 X 4

(Top view)

Address input Bank select address Data-input/output

Input and output data strobe

Chip select Row address strobe command Column address strobe command Write enable

Input mask

Clock input

Differential clock input

Clock enable Input reference voltage Power for internal circuit Ground for internal circuit Power for DQ circuit Ground for DQ circuit No connection

VDDQ

DQ0

VSSQ

NC NC

VDDQ

DQ1

VSSQ

NC NC

VDDQ

NC NC

VDD

NC NC

/WE /CAS /RAS

/CS

NC BA0 BA1

A10(AP)

A0 A1 A2 A3

VDD

A0 to A12 BA0, BA1

DQ0 to DQ7

DQS /CS /RAS /CAS /WE DM CK /CK CKE VREF VDD VSS VDDQ VSSQ NC

A10(AP)

66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34

DQ7 VSSQ NC DQ6 VDDQ NC DQ5 VSSQ NC DQ4 VDDQ NC NC VSSQ DQS NC VREF VSS DM /CK CK CKE NC A12 A11 A9 A8 A7 A6 A5 A4 VSS

NC VSSQ NC DQ3 VDDQ NC NC VSSQ NC DQ2 VDDQ NC NC VSSQ DQS NC VREF VSS DM /CK CK CKE NC A12 A11 A9 A8 A7 A6 A5 A4 VSS

VSS

Elpida Memory, Inc. 2002

Page 2

Ordering Information

Part number

EDD5104ABTA-6B EDD5104ABTA-7A EDD5104ABTA-7B

EDD5108ABTA-6B EDD5108ABTA-7A EDD5108ABTA-7B

Part Number

Elpida Memory

Type D: Monolithic Device

Product Code D: DDR SDRAM

Mask version

B 128M × 4 4

64M × 8

EDD5104ABTA, EDD5108ABTA

Organization

(words × bits)

Internal banks

Data Rate Mbps (max.)

333 266 266

JEDEC speed bin (CL-tRCD-tRP)

DDR333B (2.5-3-3) DDR266A (2-3-3) DDR266B (2.5-3-3)

E D D 51 04 A B TA - 6B

Package

66-pin Plastic TSOP (II)

10.16mm(400)

Density / Bank 51: 512M / 4 banks

Bit Organization 4: x4 8: x8

Voltage, Interface A: 2.5V, SSTL_2

Die Rev. Package

TA: TSOP (II)

Speed 6B: DDR333B (2.5-3-3) 7A: DDR266A (2-3-3) 7B: DDR266B (2.5-3-3)

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 3

CONTENTS

EDD5104ABTA, EDD5108ABTA

Description.....................................................................................................................................................1

Features.........................................................................................................................................................1

Pin Configurations .........................................................................................................................................1

Ordering Information......................................................................................................................................2

Part Number ..................................................................................................................................................2

Electrical Specifications.................................................................................................................................4

Block Diagram .............................................................................................................................................10

Pin Function.................................................................................................................................................11

Command Operation ...................................................................................................................................13

Simplified State Diagram .............................................................................................................................21

Operation of the DDR SDRAM ....................................................................................................................22

Timing Waveforms.......................................................................................................................................41

Package Drawing ........................................................................................................................................47

Recommended Soldering Conditions ..........................................................................................................48

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 4

EDD5104ABTA, EDD5108ABTA

Electrical Specifications

• All voltages are referenced to VSS (GND).

• After power up, wait more than 200 µs and then, execute power on sequence and CBR (Auto) refresh before

proper device operation is achieved.

Absolute Maximum Ratings

Parameter Symbol Rating Unit Note

Voltage on any pin relative to VSS VT –1.0 to +3.6 V

Supply voltage relative to VSS VDD –1.0 to +3.6 V

Short circuit output current IOS 50 mA

Power dissipation PD 1.0 W

Operating temperature TA 0 to +70 °C Storage temperature Tstg –55 to +125 °C

Caution

Exposing the device to stress above those listed in Absolute Maximum Ratings could cause permanent damage. The device is not meant to be operated under conditions outside the limits described in the operational section of this specification. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.

Recommended Operating Conditions (TA = 0 to 70°°°°C)

Parameter Symbol Min Typ Max Unit Notes

Supply voltage

Input reference voltage VREF 0.49 × VDDQ 0.50 × VDDQ 0.51 × VDDQ V

Termination voltage VTT VREF – 0.04 VREF VREF + 0.04 V

Input high voltage VIH (DC) VREF + 0.15 — VDDQ + 0.3 V 2

Input low voltage VIL (DC) –0.3 — VREF – 0.15 V 3

Input voltage level, CK and /CK inputs

Input differential cross point voltage, CK and /CK inputs

Input differential voltage, CK and /CK inputs

VDD, VDDQ

VSS, VSSQ

VIN (DC) –0.3 — VDDQ + 0.3 V 4

VIX (DC) 0.5 × VDDQ − 0.2V 0.5 × VDDQ 0.5 × VDDQ + 0.2V V

VID (DC) 0.36 — VDDQ + 0.6 V 5, 6

2.3 2.5 2.7 V 1

0 0 0 V

Notes: 1. VDDQ must be lower than or equal to VDD.

2. VIH is allowed to exceed VDD up to 3.6V for the period shorter than or equal to 5ns.

3. VIL is allowed to outreach below VSS down to –1.0V for the period shorter than or equal to 5ns.

4. VIN (DC) specifies the allowable dc execution of each differential input.

5. VID (DC) specifies the input differential voltage required for switching.

6. VIH (CK) min assumed over VREF + 0.18V, VIL (CK) max assumed under VREF – 0.18V if measurement.

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 5

EDD5104ABTA, EDD5108ABTA

DC Characteristics 1 (TA = 0 to +70°°°°C, VDD, VDDQ = 2.5V ± 0.2V, VSS, VSSQ = 0V)

max.

Parameter Symbol Grade × 4 × 8 Unit Test condition Notes

Operating current (ACT-PRE) IDD0

Operating current (ACT-READ-PRE)

Idle power down standby current

Floating idle standby current IDD2F

Quiet idle standby current IDD2Q 25 25 mA

Active power down standby current

Active standby current IDD3N

Operating current (Burst read operation)

Operating current (Burst write operation)

Auto Refresh current IDD5

Self refresh current IDD6 4 4 mA

Operating current (4 banks interleaving)

IDD1

IDD2P 3 3 mA CKE ≤ VIL 4

IDD3P 20 20 mA CKE ≤ VIL 3

IDD4R

IDD4W

IDD7A

-6B

-7A, -7B

-6B

-7A, -7B

-6B

-7A, -7B

-6B

-7A, -7B

-6B

-7A, -7B

-6B

-7A, -7B

-6B

-7A, -7B

-6B

-7A, -7B

Notes: 1. These IDD data are measured under condition that DQ pins are not connected.

2. One bank operation.

3. One bank active.

4. All banks idle.

5. Command/Address transition once per one clock cycle.

6. DQ, DM and DQS transition twice per one clock cycle.

7. 4 banks active. Only one bank is running at tRC = tRC (min.)

8. The IDD data on this table are measured with regard to tCK = tCK (min.) in general.

9. Command/Address transition once every two clock cycles.

10. Command/Address stable at ≥ VIH or ≤ VIL.

150 135

170 155

40 35

70 60

200 170

290 270

420 360

150 135

180 160

40 35

70 60

210 180

290 270

430 370

CKE ≥ VIH,

tRC = tRC (min.) CKE ≥ VIH, BL = 4,

CL = 2.5, tRC = tRC (min.)

CKE ≥ VIH, /CS ≥ VIH,

DQ, DQS, DM = VREF CKE ≥ VIH, /CS ≥ VIH,

DQ, DQS, DM = VREF

CKE ≥ VIH, /CS ≥ VIH

tRAS = tRAS (max.)

CKE ≥ VIH, BL = 2,

CL = 2.5

CKE ≥ VIH, BL = 2,

CL = 2.5

tRFC = tRFC (min.),

Input ≤ VIL or ≥ VIH

Input ≥ VDD – 0.2 V Input ≤ 0.2 V

mA BL = 4 5, 6, 7

1, 2, 9

1, 2, 5

4, 5

4, 10

3, 5, 6

1, 2, 5, 6

DC Characteristics 2 (TA = 0 to +70°°°°C, VDD, VDDQ = 2.5V ± 0.2V, VSS, VSSQ = 0V)

Parameter Symbol min. max. Unit Test condition Notes

Input leakage current IL –2 2 µA VDD ≥ VIN ≥ VSS

Output leakage current IOZ –5 5 µA VDDQ ≥ VOUT ≥ VSS

Output high current IOH –15.2 — mA VOUT = 1.95V

Output low current IOL 15.2 — mA VOUT = 0.35V

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 6

EDD5104ABTA, EDD5108ABTA

Pin Capacitance (TA = +25°C, VDD, VDDQ = 2.5V ± 0.2V)

Parameter Symbol Pins min. Typ max. Unit Notes

Input capacitance CI1 CK, /CK 2.0 — 3.0 pF 1

CI2 All other input pins 2.0 — 3.0 pF 1

Delta input capacitance Cdi1 CK, /CK — — 0.25 pF 1

Cdi2 All other input-only pins — — 0.5 pF 1

Data input/output capacitance CI/O DQ, DM, DQS 4.0 — 5 pF 1, 2,

Delta input/output capacitance Cdio DQ, DM, DQS — — 0.5 pF 1

Notes: 1. These parameters are measured on conditions: f = 100MHz, VOUT = VDDQ/2, ∆VOUT = 0.2V,

TA = +25°C.

2. DOUT circuits are disabled.

AC Characteristics (TA = 0 to +70°°°°C, VDD, VDDQ = 2.5V ± 0.2V, VSS, VSSQ = 0V)

-6B -7A -7B

Parameter Symbol

Clock cycle time (CL = 2)

(CL = 2.5) tCK 6 12 7.5 12 7.5 12 ns

CK high-level width tCH 0.45 0.55 0.45 0.55 0.45 0.55 tCK

CK low-level width tCL 0.45 0.55 0.45 0.55 0.45 0.55 tCK

CK half period tHP

DQ output access time from CK, /CK

DQS output access time from CK, /CK

DQS to DQ skew tDQSQ — 0.45 — 0.5 — 0.5 ns 3

DQ/DQS output hold time from DQS tQH tHP – tQHS — tHP – tQHS — tHP – tQHS — ns

Data hold skew factor tQHS — 0.55 — 0.75 — 0.75 ns

Data-out high-impedance time from CK, /CK

Data-out low-impedance time from CK, /CK

Read preamble tRPRE 0.9 1.1 0.9 1.1 0.9 1.1 tCK

Read postamble tRPST 0.4 0.6 0.4 0.6 0.4 0.6 tCK

DQ and DM input setup time tDS 0.45 — 0.5 — 0.5 — ns 8

DQ and DM input hold time tDH 0.45 — 0.5 — 0.5 — ns 8

DQ and DM input pulse width tDIPW 1.75 — 1.75 — 1.75 — ns 7

Write preamble setup time

Write preamble tWPRE 0.25 — 0.25 — 0.25 — tCK

Write postamble tWPST 0.4 0.6 0.4 0.6 0.4 0.6 tCK 9

Write command to first DQS latching transition

DQS falling edge to CK setup time tDSS 0.2 — 0.2 — 0.2 — tCK

DQS falling edge hold time from CK tDSH 0.2 — 0.2 — 0.2 — tCK

DQS input high pulse width tDQSH 0.35 — 0.35 — 0.35 — tCK

DQS input low pulse width tDQSL 0.35 0.35 — 0.35 — tCK

tCK 7.5 12 7.5 12 10 12 ns 10

tAC –0.7 0.7 –0.75 0.75 –0.75 0.75 ns 2, 11

tDQSC K

tHZ –0.7 0.7 –0.75 0.75 –0.75 0.75 ns 5, 11

tLZ –0.7 0.7 –0.75 0.75 –0.75 0.75 ns 6, 11

tWPRE S

tDQSS 0.75 1.25 0.75 1.25 0.75 1.25 tCK

min. max. min. max min. max.

min (tCH, tCL)

–0.6 0.6 –0.75 0.75 –0.75 0.75 ns 2, 11

0 — 0 — 0 — ns

—

min (tCH, tCL)

—

min (tCH, tCL)

— tCK

Unit Notes

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 7

EDD5104ABTA, EDD5108ABTA

-6B -7A -7B

Parameter Symbol

Address and control input setup time tIS 0.75 — 0.9 — 0.9 —

Address and control input hold time tIH 0.75 — 0.9 — 0.9 — ns 8

Address and control input pulse width

Mode register set command cycle time

Active to Precharge command period

Active to Active/Auto refresh command period

Auto refresh to Active/Auto refresh command period

Active to Read/Write delay tRCD 18 — 20 — 20 — ns

Precharge to active command period tRP 18 — 20 — 20 — ns

Active to Autoprecharge delay tRAP tRCD min. — tRCD min. — tRCD min. — ns

Active to active command period tRRD 12 — 15 — 15 — ns

Write recovery time tWR 15 — 15 — 15 — ns

Auto precharge write recovery and precharge time

Internal write to Read command delay

Average periodic refresh interval tREF — 7.8 — 7.8 — 7.8 µs

tIPW 2.2 — 2.2 — 2.2 — ns 7

tMRD 2 — 2 — 2 — tCK

tRAS 42 120000 45 120000 45 120000 ns

tRC 60 — 67.5 — 67.5 — ns

tRFC 72 — 75 — 75 — ns

tDAL

tWTR 1 — 1 — 1 — tCK

Notes: 1. On all AC measurements, we assume the test conditions shown in the next page. For timing parameter

definitions, see ‘Timing Waveforms’ section.

2. This parameter defines the signal transition delay from the cross point of CK and /CK. The signal transition is defined to occur when the signal level crossing VTT.

3. The timing reference level is VTT.

4. Output valid window is defined to be the period between two successive transition of data out or DQS (read) signals. The signal transition is defined to occur when the signal level crossing VTT.

5. tHZ is defined as DOUT transition delay from Low-Z to High-Z at the end of read burst operation. The timing reference is cross point of CK and /CK. This parameter is not referred to a specific DOUT voltage level, but specify when the device output stops driving.

6. tLZ is defined as DOUT transition delay from High-Z to Low-Z at the beginning of read operation. This parameter is not referred to a specific DOUT voltage level, but specify when the device output begins driving.

7. Input valid windows is defined to be the period between two successive transition of data input or DQS (write) signals. The signal transition is defined to occur when the signal level crossing VREF.

8. The timing reference level is VREF.

9. The transition from Low-Z to High-Z is defined to occur when the device output stops driving. A specific reference voltage to judge this transition is not given.

10. tCK (max.) is determined by the lock range of the DLL. Beyond this lock range, the DLL operation is not assured.

11. tCK = tCK (min.) when these parameters are measured. Otherwise, absolute minimum values of these values are 10% of tCK.

12. VDD is assumed to be 2.5V ± 0.2V. VDD power supply variation per cycle expected to be less than

0.4V/400 cycle.

13. tDAL = (tWR/tCK)+(tRP/tCK)

For each of the terms above, if not already an integer, round to the next highest integer.

Example: For –7A Speed at CL = 2.5, tCK = 7.5ns, tWR = 15ns and tRP= 20ns,

tDAL = (15ns/7.5ns) + (20ns/7.5ns) = (2) + (3)

tDAL = 5 clocks

min. max. min. max min. max.

(tWR/tCK)+ (tRP/tCK)

—

(tWR/tCK)+ (tRP/tCK)

— tCK 13

Unit Notes

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 8

EDD5104ABTA, EDD5108ABTA

Test Conditions

Parameter Symbol Value Unit

Input reference voltage VREF VDDQ/2 V

Termination voltage VTT VREF V

Input high voltage VIH (AC) VREF + 0.31 V Input low voltage VIL (AC) VREF − 0.31 V

Input differential voltage, CK and /CK inputs

Input differential cross point voltage, CK and /CK inputs

Input signal slew rate SLEW 1 V/ns

/CK

VID (AC) 0.62 V

VIX (AC) VREF V

VID

tCL

tCK

tCH

VDD VREF VSS

VIX

VDD

VIH

VIL

∆t

SLEW = (VIH (AC) – VIL (AC))/∆t

VTT

Measurement point

RT = 50Ω

CL = 30pF

Input Waveforms and Output Load

VREF

VSS

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 9

EDD5104ABTA, EDD5108ABTA

Timing Parameter Measured in Clock Cycle

Number of clock cycle

tCK 6ns 7.5ns

Parameter Symbol min. max. min. max.

Write to pre-charge command delay (same bank) tWPD 4 + BL/2 3 + BL/2

Read to pre-charge command delay (same bank) tRPD BL/2 BL/2

Write to read command delay (to input all data) tWRD 2 + BL/2 2 + BL/2

Burst stop command to write command delay (CL = 2)

(CL = 2.5) tBSTW 3 3

Burst stop command to DQ High-Z (CL = 2)

(CL = 2.5) tBSTZ 2.5 2.5 2.5 2.5

Read command to write command delay (to output all data) (CL = 2)

(CL = 2.5) tRWD 3 + BL/2 3 + BL/2

Pre-charge command to High-Z (CL = 2)

(CL = 2.5) tHZP 2.5 2.5 2.5 2.5

Write command to data in latency tWCD 1 1 1 1

Write recovery time tWR 3 2

DM to data in latency tDMD 0 0 0 0

Mode register set command cycle time tMRD 2 2

Self refresh exit to non-read command tSNR 12 10

Self refresh exit to read command tSRD 200 200

Power down entry tPDEN 1 1 1 1

Power down exit to command input tPDEX 1 1

tBSTW 2 2

tBSTZ 2 2 2 2

tRWD 2 + BL/2 2 + BL/2

tHZP 2 2 2 2

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 10

Block Diagram

/CK

CKE

Clock

generator

EDD5104ABTA, EDD5108ABTA

Bank 3

Bank 2

Bank 1

A0 to A12, BA0, BA1

/RAS /CAS

/CS

/WE

Mode register

Control logic

Command decoder

Row address buffer and refresh counter

Column address buffer and burst counter

CK, /CK

DLL

Memory cell array

Row decoder

Sense amp.

Column decoder

Data control circuit

Latch circuit

Input & Output buffer

Bank 0

DQS

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 11

EDD5104ABTA, EDD5108ABTA

Pin Function

CK, /CK (input pins)

The CK and the /CK are the master clock inputs. All inputs except DM, DQS and DQs are referred to the cross point of the CK rising edge and the /CK falling edge. When a read operation, DQS and DQs are referred to the cross point of the CK and the /CK. When a write operation, DQS and DQs are referred to the cross point of the DQS and the VREF level. DQS for write operation is referred to the cross point of the CK and the /CK. CK is the master clock input to this pin. The other input signals are referred at CK rising edge.

/CS (input pin)

When /CS is Low, commands and data can be input. When /CS is High, all inputs are ignored. However, internal operations (bank active, burst operations, etc.) are held.

/RAS, /CAS, and /WE (input pins)

These pins define operating commands (read, write, etc.) depending on the combinations of their voltage levels. See "Command operation".

A0 toA12 (input pins)

Row address (AX0 to AX12) is determined by the A0 to the A12 level at the cross point of the CK rising edge and the /CK falling edge in a bank active command cycle. Column address (See “Address Pins Table”) is loaded via the A0 to the A9, A11 and A12 at the cross point of the CK rising edge and the /CK falling edge in a read or a write command cycle. This column address becomes the starting address of a burst operation.

[Address Pins Table]

Address (A0 to A12)

Part number Row address Column address

EDD5104AB AX0 to AX12 AY0 to AY9, AY11, AY12

EDD5108AB AX0 to AX12 AY0 to AY9, AY11,

A10 (AP) (input pin)

A10 defines the precharge mode when a precharge command, a read command or a write command is issued. If A10 = High when a precharge command is issued, all banks are precharged. If A10 = Low when a precharge command is issued, only the bank that is selected by BA1/BA0 is precharged. If A10 = High when read or write command, auto-precharge function is enabled. While A10 = Low, auto-precharge function is disabled.

BA0 and BA1 (input pins)

BA0, BA1 are bank select signals (BA). The memory array is divided into bank 0, bank 1, bank 2 and bank 3. (See Bank Select Signal Table)

[Bank Select Signal Table]

BA0 BA1

Bank 0 L L

Bank 1 H L

Bank 2 L H

Bank 3 H H

Remark: H: VIH. L: VIL

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 12

EDD5104ABTA, EDD5108ABTA

CKE (input pin)

This pin determines whether or not the next CK is valid. If CKE is High, the next CK rising edge is valid. If CKE is Low. CKE controls power down and self-refresh. The power down and the self-refresh commands are entered when the CKE is driven Low and exited when it resumes to High. CKE must be maintained high throughout read or write access.

The CKE level must be kept for 1 CK cycle at least, that is, if CKE changes at the cross point of the CK rising edge and the /CK falling edge with proper setup time tIS, by the next CK rising edge CKE level must be kept with proper hold time tIH.

DM (input pin)

DM is the reference signal of the data input mask function. DM is sampled at the cross point of DQS and VREF.

DQ0 toDQ7 (input/output pins)

Data is input to and output from these pins (DQ0 to DQ3; EDD5104AB, DQ0 to DQ7; EDD5108AB).

DQS (input and output pin): DQS provides the read data strobe (as output) and the write data strobe (as input).

VDD, VSS, VDDQ, VSSQ (Power supply)

VDD and VSS are power supply pins for internal circuits. VDDQ and VSSQ are power supply pins for the output buffers.

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 13

EDD5104ABTA, EDD5108ABTA

Command Operation

Command Truth Table

DDR SDRAM recognize the following commands specified by the /CS, /RAS, /CAS, /WE and address pins. All other combinations than those in the table below are illegal.

CKE

Command Symbol n – 1 n /CS /RAS /CAS /WE BA1 BA0 AP Address

Ignore command DESL H H H × × × × × × × No operation NOP H H L H H H × × × × Burst stop in read command BST H H L H H L × × × ×

Column address and read command READ H H L H L H V V L V

Read with auto-precharge READA H H L H L H V V H V

Column address and write command WRIT H H L H L L V V L V

Write with auto-precharge WRITA H H L H L L V V H V

Row address strobe and bank active ACT H H L L H H V V V V

Precharge select bank PRE H H L L H L V V L × Precharge all bank PALL H H L L H L × × H × Refresh REF H H L L L H × × × × SELF H L L L L H × × × ×

Mode register set MRS H H L L L L L L L V

EMRS H H L L L L L H L V

Remark: H: VIH. L: VIL. ×: VIH or VIL V: Valid address input

Note: The CKE level must be kept for 1 CK cycle at least.

Ignore command [DESL]

When /CS is High at the cross point of the CK rising edge and the VREF level, every input are neglected and internal status is held.

No operation [NOP]

As long as this command is input at the cross point of the CK rising edge and the VREF level, address and data input are neglected and internal status is held.

Burst stop in read operation [BST]

This command stops a burst read operation, which is not applicable for a burst write operation.

Column address strobe and read command [READ]

This command starts a read operation. The start address of the burst read is determined by the column address (See “Address Pins Table” in Pin Function) and the bank select address. After the completion of the read operation, the output buffer becomes High-Z.

Read with auto-precharge [READA]

This command starts a read operation. After completion of the read operation, precharge is automatically executed.

Column address strobe and write command [WRIT]

This command starts a write operation. The start address of the burst write is determined by the column address (See “Address Pins Table” in Pin Function) and the bank select address.

Write with auto-precharge [WRITA]

This command starts a write operation. After completion of the write operation, precharge is automatically executed.

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 14

EDD5104ABTA, EDD5108ABTA

Row address strobe and bank activate [ACT]

This command activates the bank that is selected by BA0, BA1 and determines the row address (AX0 to AX12). (See Bank Select Signal Table)

Precharge selected bank [PRE]

This command starts precharge operation for the bank selected by BA0, BA1. (See Bank Select Signal Table)

[Bank Select Signal Table]

BA0 BA1

Bank 0 L L

Bank 1 H L

Bank 2 L H

Bank 3 H H

Remark: H: VIH. L: VIL

Precharge all banks [PALL]

This command starts a precharge operation for all banks.

Refresh [REF/SELF]

This command starts a refresh operation. There are two types of refresh operation, one is auto-refresh, and another is self-refresh. For details, refer to the CKE truth table section.

Mode register set/Extended mode register set [MRS/EMRS]

The DDR SDRAM has the two mode registers, the mode register and the extended mode register, to defines how it works. The both mode registers are set through the address pins (the A0 to the A12, BA0 to BA1) in the mode register set cycle. For details, refer to "Mode register and extended mode register set".

CKE Truth Table

CKE Current state Command n – 1 n /CS /RAS /CAS /WE Address Notes Idle Auto-refresh command (REF) H H L L L H × 2 Idle Self-refresh entry (SELF) H L L L L H × 2 Idle Power down entry (PDEN) H L L H H H × H L H × × × × Self refresh Self refresh exit (SELFX) L H L H H H × L H H × × × × Power down Power down exit (PDEX) L H L H H H × L H H × × × ×

Remark: H: VIH. L: VIL. ×: VIH or VIL.

Notes: 1. All the banks must be in IDLE before executing this command.

2. The CKE level must be kept for 1 CK cycle at least.

Preliminary Data Sheet E0237E30 (Ver. 3.0)

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EDD5104ABTA, EDD5108ABTA

Function Truth Table

The following tables show the operations that are performed when each command is issued in each state of the DDR SDRAM.

Function Truth Table (1)

Current state /CS /RAS /CAS /WE Address Command Operation Next state

Precharging*

L H H H × NOP NOP ldle L H H L × BST ILLEGAL*

L H L H BA, CA, A10 READ/READA ILLEGAL*11 —

L H L L BA, CA, A10 WRIT/WRITA ILLEGAL*11 —

L L H H BA, RA ACT ILLEGAL*11 —

L L H L BA, A10 PRE, PALL NOP ldle

L L L × × ILLEGAL —

Idle*

H × × × × DESL NOP ldle L H H H × NOP NOP ldle L H H L × BST ILLEGAL*

L H L H BA, CA, A10 READ/READA ILLEGAL*11 —

L H L L BA, CA, A10 WRIT/WRITA ILLEGAL*11 —

L L H H BA, RA ACT Activating Active

L L H L BA, A10 PRE, PALL NOP ldle

L L L H × REF, SELF

L L L L MODE MRS Mode register set*12 ldle

Refresh (auto-refresh)*

L H H H × NOP NOP ldle L H H L × BST ILLEGAL — L H L × × ILLEGAL — L L × × × ILLEGAL —

H × × × × DESL NOP ldle

—

Refresh/ Self refresh*

H × × × × DESL NOP ldle

ldle/ Self refresh

Preliminary Data Sheet E0237E30 (Ver. 3.0)

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EDD5104ABTA, EDD5108ABTA

Function Truth Table (2)

Current state /CS /RAS /CAS /WE Address Command Operation Next state

Activating*

L H H H × NOP NOP Active L H H L × BST ILLEGAL*

L H L H BA, CA, A10 READ/READA ILLEGAL*11 —

L H L L BA, CA, A10 WRIT/WRITA ILLEGAL*11 —

L L H H BA, RA ACT ILLEGAL*11 —

L L H L BA, A10 PRE, PALL ILLEGAL*11 —

L L L × × ILLEGAL —

Active*

L H H H × NOP NOP Active L H H L × BST ILLEGAL Active

L H L H BA, CA, A10 READ/READA Starting read operation Read/READA

L H L L BA, CA, A10 WRIT/WRITA Starting write operation

L L H H BA, RA ACT ILLEGAL*11 —

L L H L BA, A10 PRE, PALL Pre-charge Idle

L L L × × ILLEGAL —

Read*

L H H H × NOP NOP Active L H H L × BST BST Active

L H L H BA, CA, A10 READ/READA

L H L L BA, CA, A10 WRIT/WRITA ILLEGAL*13 —

L L H H BA, RA ACT ILLEGAL*11 —

L L H L BA, A10 PRE, PALL

L L L × × ILLEGAL —

H × × × × DESL NOP Active

—

H × × × × DESL NOP Active

Write recovering/ precharging

H × × × × DESL NOP Active

Interrupting burst read operation to start new read

Interrupting burst read operation to start pre-charge

Active

Precharging

Preliminary Data Sheet E0237E30 (Ver. 3.0)

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EDD5104ABTA, EDD5108ABTA

Function Truth Table (3)

Current state /CS /RAS /CAS /WE Address Command Operation Next state

Read with auto-precharge*7

L H H H × NOP NOP Precharging L H H L × BST ILLEGAL —

L H L H BA, CA, A10 READ/READA ILLEGAL*14 —

L H L L BA, CA, A10 WRIT/WRITA ILLEGAL*14 —

L L H H BA, RA ACT ILLEGAL*

L L H L BA, A10 PRE, PALL ILLEGAL*

L L L × × ILLEGAL —

Write*

H × × × × DESL NOP

L H H H × NOP NOP L H H L × BST ILLEGAL —

L H L H BA, CA, A10 READ/READA

L H L L BA, CA, A10 WRIT/WRITA

L L H H BA, RA ACT ILLEGAL*11 —

L L H L BA, A10 PRE, PALL

L L L × × ILLEGAL —

Write recovering*

L H H H × NOP NOP Active L H H L × BST ILLEGAL —

L H L H BA, CA, A10 READ/READA Starting read operation. Read/ReadA

L H L L BA, CA, A10 WRIT/WRITA

L L H H BA, RA ACT ILLEGAL*11 —

L L H L BA, A10 PRE/PALL ILLEGAL*11 —

L L L × × ILLEGAL —

Write with autopre-charge*

L H H H × NOP NOP Precharging L H H L × BST ILLEGAL —

L H L H BA, CA, A10 READ/READA ILLEGAL*14 —

L H L L BA, CA, A10 WRIT/WRIT A ILLEGAL*14 —

L L H H BA, RA ACT ILLEGAL*

L L H L BA, A10 PRE, PALL ILLEGAL*

L L L × × ILLEGAL —

Remark: H: VIH. L: VIL. ×: VIH or VIL

H × × × × DESL NOP Precharging

11, 14

—

11, 14

—

Write recovering

Interrupting burst write operation to

Read/ReadA

start read operation. Interrupting burst write

operation to start new write

Write/WriteA

operation.

Interrupting write operation to start pre-

Idle

charge.

H × × × × DESL NOP Active

Starting new write operation.

H × × × × DESL NOP Precharging

11, 14

—

11, 14

—

Write/WriteA

Preliminary Data Sheet E0237E30 (Ver. 3.0)

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EDD5104ABTA, EDD5108ABTA

Notes: 1. The DDR SDRAM is in "Precharging" state for tRP after precharge command is issued.

2. The DDR SDRAM reaches "IDLE" state tRP after precharge command is issued.

3. The DDR SDRAM is in "Refresh" state for tRFC after auto-refresh command is issued.

4. The DDR SDRAM is in "Activating" state for tRCD after ACT command is issued.

5. The DDR SDRAM is in "Active" state after "Activating" is completed.

6. The DDR SDRAM is in "READ" state until burst data have been output and DQ output circuits are turned

off.

7. The DDR SDRAM is in "READ with auto-precharge" from READA command until burst data has been

output and DQ output circuits are turned off.

8. The DDR SDRAM is in "WRITE" state from WRIT command to the last burst data are input.

9. The DDR SDRAM is in "Write recovering" for tWR after the last data are input.

10. The DDR SDRAM is in "Write with auto-precharge" until tWR after the last data has been input.

11. This command may be issued for other banks, depending on the state of the banks.

12. All banks must be in "IDLE".

13. Before executing a write command to stop the preceding burst read operation, BST command must be

issued.

14. EDD5104ABTA and EDD5108ABTA support the concurrent auto-precharge feature, a read with auto-

precharge enabled,or a write with auto-precharge enabled, may be followed by any column command to other banks, as long as that command does not interrupt the read or write data transfer, and all other related limitations apply. (E.g. Conflict between READ data and WRITE data must be avoided.)

The minimum delay from a read or write command with auto precharge enabled, to a command to a

different bank, is summarized below.

From command

Read w/AP Read or Read w/AP BL/2 tCK

Write or Write w/AP CL(rounded up)+ (BL/2) tCK

Precharge or Activate 1 tCK

Write w/AP Read or Read w/AP 1 + (BL/2) + tWTR tCK

Write or Write w/AP BL/2 tCK

Precharge or Activate 1 tCK

To command (different bank, noninterrupting command)

Minimum delay (Concurrent AP supported)

Units

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 19

EDD5104ABTA, EDD5108ABTA

Command Truth Table for CKE

Current State CKE

n – 1 n /CS /RAS /CAS /WE Address Operation Notes

Self refresh H × × × × × × INVALID, CK (n-1) would exit self refresh L H H × × × × Self refresh recovery L H L H H × × Self refresh recovery L H L H L × × ILLEGAL L H L L × × × ILLEGAL L L × × × × × Maintain self refresh Self refresh recovery H H H × × × × Idle after tRC H H L H H × × Idle after tRC H H L H L × × ILLEGAL H H L L × × × ILLEGAL H L H × × × × ILLEGAL H L L H H × × ILLEGAL H L L H L × × ILLEGAL H L L L × × × ILLEGAL Power down H × × × × × INVALID, CK (n – 1) would exit power down L H H × × × × EXIT power down → Idle L H L H H H × L L × × × × × Maintain power down mode All banks idle H H H × × × Refer to operations in Function Truth Table H H L H × × Refer to operations in Function Truth Table H H L L H × Refer to operations in Function Truth Table H H L L L H × CBR (auto) refresh

H H L L L L OPCODE Refer to operations in Function Truth Table

H L H × × × Refer to operations in Function Truth Table H L L H × × Refer to operations in Function Truth Table H L L L H × Refer to operations in Function Truth Table H L L L L H × Self refresh 1

H L L L L L OPCODE Refer to operations in Function Truth Table

L × × × × × × Power down 1 Row active H × × × × × × Refer to operations in Function Truth Table L × × × × × × Power down 1

Remark: H: VIH. L: VIL. ×: VIH or VIL

Note: Self refresh can be entered only from the all banks idle state. Power down can be entered only from all banks idle or row active state.

Preliminary Data Sheet E0237E30 (Ver. 3.0)

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EDD5104ABTA, EDD5108ABTA

Auto-refresh command [REF]

This command executes auto-refresh. The banks and the ROW addresses to be refreshed are internally determined

by the internal refresh controller. The average refresh cycle is 7.8 µs. The output buffer becomes High-Z after auto-

refresh start. Precharge has been completed automatically after the auto-refresh. The ACT or MRS command can be issued tRFC

Self-refresh entry [SELF]

This command starts self-refresh. The self-refresh operation continues as long as CKE is held Low. During the selfrefresh operation, all ROW addresses are repeated refreshing by the internal refresh controller. A self-refresh is terminated by a self-refresh exit command.

Power down mode entry [PDEN]

tPDEN (= 1 cycle) after the cycle when [PDEN] is issued. The DDR SDRAM enters into power-down mode. In power down mode, power consumption is suppressed by deactivating the input initial circuit. Power down mode continues while CKE is held Low. No internal refresh operation occurs during the power down mode. [PDEN] do not disable DLL.

Self-refresh exit [SELFX]

This command is executed to exit from self-refresh mode. To issue non-read commands, tSNR has to be satisfied. ((tSNR =)10 cycles for tCK = 7.5 ns or 12 cycles for tCK = 6.0 ns after [SELFX]) To issue read command, tSRD has to be satisfied to adjust DOUT timing by DLL. (200 cycles after [SELFX]) After the exit, input auto-refresh command

within 7.8 µs.

Power down exit [PDEX]

The DDR SDRAM can exit from power down mode tPDEX (1 cycle min.) after the cycle when [PDEX] is issued.

after the last auto-refresh command.

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 21

Simplified State Diagram

SR ENTRY

EDD5104ABTA, EDD5108ABTA

SELF REFRESH

SR EXIT

POWER APPLIED

MODE REGISTER SET

ACTIVE

POWER

DOWN

Write

WRITE WITH AP

POWER ON

MRS

CKE_

CKE

WRITE

WRITEA READA

PRECHARGE PRECHARGE

PRECHARGE

ROW ACTIVE

WRITE WITH AP

READ

READ WITH AP

PRECHARGE

IDLE

ACTIVE

READ WITH AP

REFRESH

CKE_

CKE

READ

IDLE POWER DOWN

BST

READ

AUTO REFRESH

Read

READ WITH AP

Automatic transition after completion of command. Transition resulting from command input.

Note: 1. After the auto-refresh operation, precharge operation is performed automatically

and enter the IDLE state.

Preliminary Data Sheet E0237E30 (Ver. 3.0)

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EDD5104ABTA, EDD5108ABTA

Operation of the DDR SDRAM

Power-up Sequence

The following sequence is recommended for Power-up. (1) Apply power and attempt to maintain CKE at an LVCMOS low state (all other inputs may be undefined).

Apply VDD before or at the same time as VDDQ.

Apply VDDQ before or at the same time as VTT and VREF. (2) Start clock and maintain stable condition for a minimum of 200 µs. (3) After the minimum 200 µs of stable power and clock (CK, /CK), apply NOP and take CKE high. (4) Issue precharge all command for the device. (5) Issue EMRS to enable DLL. (6) Issue a mode register set command (MRS) for "DLL reset" with bit A8 set to high (An additional 200 cycles of

clock input is required to lock the DLL after every DLL reset). (7) Issue precharge all command for the device. (8) Issue 2 or more auto-refresh commands. (9) Issue a mode register set command to initialize device operation.

/CK

Command

PALL MRS REF

2 cycles (min.) 2 cycles (min.)

EMRS

DLL enable

DLL reset

PALL MRS

REF

200 cycles (min)

Power-up Sequence after CKE Goes High

RFC

REF

RFC

2 cycles (min.)2 cycles (min.)

Any

command

Mode Register and Extended Mode Register Set

There are two mode registers, the mode register and the extended mode register so as to define the operating mode. Parameters are set to both through the A0 to the A12 and BA0, BA1 pins by the mode register set command [MRS] or the extended mode register set command [EMRS]. The mode register and the extended mode register are set by inputting signal via the A0 to the A12 and BA0, BA1 during mode register set cycles. BA0 and BA1 determine which one of the mode register or the extended mode register are set. Prior to a read or a write operation, the mode register must be set.

Remind that no other parameters are shown in the table bellow are allowed to input to the registers.

BA0

A11 A10A12BA1

A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

0000 0DR LMODE BT BL

MRS

DLL Reset 0No 1 Yes

A6 A5 A4 CAS Latency

010 110

2.5

Burst Type 0 Sequential 1 Interleave

A2 A1 A0

001 010

Burst Length BT=0 BT=1

2 4

011 8

2 4 8

Mode Register Set [MRS] (BA0 = 0, BA1 = 0)

Preliminary Data Sheet E0237E30 (Ver. 3.0)

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EDD5104ABTA, EDD5108ABTA

BA0

EMRS

Burst Operation

The burst type (BT) and the first three bits of the column address determine the order of a data out.

Burst length = 2

Starting Ad.

0 1

Burst length = 8

Starting Ad.

A2 A1 A0

000 001 010 011 100 101 110 111

A11 A10A12BA1

Extended Mode Register Set [EMRS] (BA0 = 1, BA1 = 0)

Addressing(decimal)

0, 1, 1, 0,

Addressing(decimal)

0, 1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7,

2, 3, 4, 5, 6, 7, 3, 4, 5, 6, 7, 4, 5, 6, 7, 5, 6, 7,

6, 7,

A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

000 0 0000 0 0 0 DLL0

Burst length = 4

Starting Ad.

InterleaveSequence

0, 1, 1, 0,

0, 1, 2, 3,

0, 1, 2, 3, 4,

0, 1, 2, 3, 4, 5,

0, 1, 2, 3, 4, 5, 6,

A1 A0

0, 1,

0, 1, 2,

00 01 10 11

Addressing(decimal)

0, 1, 2, 3,

1, 2, 3, 0, 2, 3, 0, 1,

0, 1, 2,

InterleaveSequence

0, 1, 2, 3, 4, 5, 6, 7,

1, 0, 3, 2, 5, 4, 7, 2, 3, 0, 1, 6, 7,

3, 2, 1, 0, 7, 4, 5, 6, 7, 5, 4, 7, 6, 7,

6, 5, 4, 3, 2, 1, 0,

0, 1, 2, 3,

6, 1, 0, 3, 2,

4, 5, 2, 3, 0, 1,

DLL Control 0 DLL Enable 1 DLL Disable

InterleaveSequence

0, 1, 2, 3, 1, 0, 3, 2, 2, 3, 0, 1, 3, 2, 1, 0,

4, 5,

6, 5, 4,

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 24

EDD5104ABTA, EDD5108ABTA

Read/Write Operations

Bank active

A read or a write operation begins with the bank active command [ACT]. The bank active command determines a bank address and a row address. For the bank and the row, a read or a write command can be issued tRCD after the ACT is issued.

Read operation

The burst length (BL), the /CAS latency (CL) and the burst type (BT) of the mode register are referred when a read command is issued. The burst length (BL) determines the length of a sequential output data by the read command that can be set to 2, 4, or 8. The starting address of the burst read is defined by the column address, the bank select address which are loaded via the A0 to A12 and BA0, BA1 pins in the cycle when the read command is issued. The

data output timing are characterized by CL (2 or 2.5) and tAC. The read burst start CL • tCK + tAC (ns) after the

clock rising edge where the read command are latched. The DDR SDRAM output the data strobe through DQS simultaneously with data. tRPRE prior to the first rising edge of the data strobe, the DQS are driven Low from VTT level. This low period of DQS is referred as read preamble. The burst data are output coincidentally at both the rising and falling edge of the data strobe. The DQ pins become High-Z in the next cycle after the burst read operation completed. tRPST from the last falling edge of the data strobe, the DQS pins become High-Z. This low period of DQS is referred as read postamble.

t1t0 t2 t3 t4 t5 t6 t7 t8

/CK

tRCD

Command

Address

DQS DQ

ACTNOP NOP NOPREAD

Row

BL = 2

BL = 4

BL = 8

Column

Read Operation (Burst Length)

tRPRE

out0 out1

tRPST

out0 out1 out2 out3

out0 out1 out2 out3 out4 out5 out6 out7

CL = 2 BL: Burst length

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 25

EDD5104ABTA, EDD5108ABTA

t0 t0.5 t1 t1.5 t2 t2.5 t3 t3.5 t4 t4.5 t5 t5.5

/CK

Command

DQS

CL = 2

DQS

CL = 2.5

READ NOP

tRPRE

tAC,tDQSCK

out0 out1 out2 out3

tRPRE

tAC,tDQSCK

out0 out1 out2 out3

tRPST

VTT

tRPST

VTT

Read Operation (/CAS Latency)

Write operation

The burst length (BL) and the burst type (BT) of the mode register are referred when a write command is issued. The burst length (BL) determines the length of a sequential data input by the write command that can be set to 2, 4, or 8. The latency from write command to data input is fixed to 1. The starting address of the burst read is defined by the column address, the bank select address which are loaded via the A0 to A12, BA0 to BA1 pins in the cycle when the write command is issued. DQS should be input as the strobe for the input-data and DM as well during burst operation. tWPRE prior to the first rising edge of the DQS should be set to Low and tWPST after the last falling edge of the data strobe can be set to High-Z. The leading low period of DQS is referred as write preamble. The last low period of DQS is referred as write postamble.

t1t0 t2 t3

t3.5 t4 t5 t6 t7 t8

/CK

Command

Address

DQS DQ

tRCD

ACTNOP NOP NOPWRITE

Row

BL = 2

BL = 4

BL = 8

Column

tWPRES

tWPRE

in1

in0

in0 in1 in2 in3

in0 in1 in2 in3 in4 in5 in6 in7

tWPST

Write Operation

BL: Burst length

Preliminary Data Sheet E0237E30 (Ver. 3.0)

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EDD5104ABTA, EDD5108ABTA

Burst Stop

Burst stop command during burst read

The burst stop (BST) command is used to stop data output during a burst read. The BST command stops the burst read and sets the output buffer to High-Z. tBSTZ (= CL) cycles after a BST command issued, the DQ pins become High-Z. The BST command is not supported for the burst write operation. Note that bank address is not referred when this command is executed.

t0 t0.5 t1 t1.5 t2 t2.5 t3 t3.5 t4 t4.5 t5 t5.5

/CK

Command

CL = 2

CL = 2.5

DQS

READ

BST NOP

tBSTZ

out0 out1

tBSTZ

2 cycles

out0 out1

Burst Stop during a Read Operation

2.5 cycles

CL: /CAS latency

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 27

EDD5104ABTA, EDD5108ABTA

Auto Precharge

Read with auto-precharge

The precharge is automatically performed after completing a read operation. The precharge starts tRPD (BL/2) cycle after READA command input. tRAP specification for READA allows a read command with auto precharge to be issued to a bank that has been activated (opened) but has not yet satisfied the tRAS (min) specification. A column command to the other active bank can be issued the next cycle after the last data output. Read with auto-precharge command does not limit row commands execution for other bank. Refer to ‘Function truth table (3) and related notes (Notes.*14)‘.

/CK

tRAP (min) = tRCD (min)

Command

DQS

Note: Internal auto-precharge starts at the timing indicated by " ".

READAACT

tRPD

2 cycles (= BL/2)

tAC,tDQSCK

NOP

out0 out1 out2 out3

tRP (min)

ACT

Read with auto-precharge

Write with auto-precharge

The precharge is automatically performed after completing a burst write operation. The precharge operation is started (BL/ 2 + 3) cycles after WRITA command issued. A column command to the other banks can be issued the next cycle after the internal precharge command issued. Write with auto-precharge command does not limit row commands execution for other bank. Refer to ‘Function truth table (3) and related notes (Notes.*14)‘.

/CK

Command

tRAS (min)

tRCD (min)

ACT WRITA ACT

NOPNOP

tRP

BL/2 + 3 cycles

DQS

Note: Internal auto-precharge starts at the timing indicated by " ".

in1 in2 in3 in4

BL = 4

Burst Write (BL = 4)

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 28

Command Intervals

A Read command to the consecutive Read command Interval

Destination row of the consecutive read command

Bank address

1. Same Same ACTIVE

2. Same Different —

3. Different Any ACTIVE

IDLE

Row address State Operation

t1t0 t2 t3 t4 t5 t6 t7 t8

/CK

The consecutive read can be performed after an interval of no less than 1 cycle to interrupt the preceding read operation.

Precharge the bank to interrupt the preceding read operation. tRP after the precharge command, issue the ACT command. tRCD after the ACT command, the consecutive read command can be issued. See ‘A read command to the consecutive precharge interval’ section.

The consecutive read can be performed after an interval of no less than 1 cycle to interrupt the preceding read operation.

Precharge the bank without interrupting the preceding read operation. tRP after the precharge command, issue the ACT command. tRCD after the ACT command, the consecutive read command can be issued.

EDD5104ABTA, EDD5108ABTA

Command

Address

DQS

ACT NOP READ

Row Column A

Column = A Read

Bank0 Active

READ

Column B

Column = B Read

outA0outA1outB0outB1outB2out

Column = A Dout

NOP

Column = B Dout

READ to READ Command Interval (same ROW address in the same bank)

CL = 2 BL = 4 Bank0

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 29

EDD5104ABTA, EDD5108ABTA

t1t0 t2 t3 t4 t5 t6 t7 t8

/CK

Command

Address

DQS

ACT NOP NOP

Row0

Bank0 Active

ACT

Row1 Column A

Bank3 Active

READ to READ Command Interval (different bank)

READ

Column = A Read

Bank0 Read

READ

Column B

Column = B Read

Bank3 Read

NOP

outA0outA1outB0outB1outB2out

Bank0 Dout

Bank3

Dout

CL = 2 BL = 4

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 30

A Write command to the consecutive Write command Interval

Destination row of the consecutive write command

Bank address

1. Same Same ACTIVE

2. Same Different —

3. Different Any ACTIVE

IDLE

Row address State Operation

t1t0 t2 t3 t4 t5 t6 t7 t8

/CK

The consecutive write can be performed after an interval of no less than 1 cycle to interrupt the preceding write operation.

Precharge the bank to interrupt the preceding write operation. tRP after the precharge command, issue the ACT command. tRCD after the ACT command, the consecutive write command can be issued. See ‘A write command to the consecutive precharge interval’ section.

The consecutive write can be performed after an interval of no less than 1 cycle to interrupt the preceding write operation.

Precharge the bank without interrupting the preceding write operation. tRP after the precharge command, issue the ACT command. tRCD after the ACT command, the consecutive write command can be issued.

EDD5104ABTA, EDD5108ABTA

Command

Address

DQS

ACT NOP WRIT

Row Column A

Bank0 Active

WRIT

Column B

inA0 inA1 inB0 inB1 inB2 inB3

Column = A Write

Column = B Write

NOP

WRITE to WRITE Command Interval (same ROW address in the same bank)

BL = 4 Bank0

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 31

EDD5104ABTA, EDD5108ABTA

t1t0 t2 t3 t4 t5 t6 t7 t8 t9

/CK

Command

Address

DQS

ACT NOP ACT

Row0 Row1 Column A

Bank0 Active

Bank3 Active

WRIT

WRITE to WRITE Command Interval (different bank)

WRIT

Column B

inA0 inA1 inB0 inB1 inB2 inB3

Bank0 Write

Bank3 Write

NOP

BL = 4 Bank0, 3

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 32

EDD5104ABTA, EDD5108ABTA

A Read command to the consecutive Write command interval with the BST command

Destination row of the consecutive write command

Bank address

1. Same Same ACTIVE

2. Same Different —

3. Different Any ACTIVE

IDLE

Row address State Operation

t1t0 t2 t3 t4 t5 t6 t7 t8

/CK

Issue the BST command. tBSTW (≥ tBSTZ) after the BST command, the consecutive write command can be issued.

Precharge the bank to interrupt the preceding read operation. tRP after the precharge command, issue the ACT command. tRCD after the ACT command, the consecutive write command can be issued. See ‘A read command to the consecutive precharge interval’ section.

Issue the BST command. tBSTW (≥ tBSTZ) after the BST command, the consecutive write command can be issued.

Precharge the bank independently of the preceding read operation. tRP after the precharge command, issue the ACT command. tRCD after the ACT command, the consecutive write command can be issued.

Command

DQS

READ WRIT

High-Z

BST NOP NOP

tBSTW (≥ tBSTZ)

tBSTZ (= CL)

out0 out1

OUTPUT INPUT

READ to WRITE Command Interval

in0 in1

in2 in3

BL = 4 CL = 2

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 33

EDD5104ABTA, EDD5108ABTA

A Write command to the consecutive Read command interval: To complete the burst operation

Destination row of the consecutive read command

Bank address

1. Same Same ACTIVE

2. Same Different —

3. Different Any ACTIVE

IDLE

/CK

Row address State Operation

t1t0 t2 t3 t4 t5 t6

To complete the burst operation, the consecutive read command should be performed tWRD (= BL/ 2 + 2) after the write command.

Precharge the bank tWRD after the preceding write command. tRP after the precharge command, issue the ACT command. tRCD after the ACT command, the consecutive read command can be issued. See ‘A read command to the consecutive precharge interval’ section.

To complete a burst operation, the consecutive read command should be performed tWRD (= BL/ 2 + 2) after the write command.

Precharge the bank independently of the preceding write operation. tRP after the precharge command, issue the ACT command. tRCD after the ACT command, the consecutive read command can be issued.

Command

DQS

WRIT NOP NOPREAD

tWRD (min)

BL/2 + 2 cycle

in0 in1 in2 in3

INPUT OUTPUT

tWTR*

Note: tWTR is referenced from the first positive CK edge after the last desired data in pair tWTR.

WRITE to READ Command Interval

out0 out1

out2

BL = 4 CL = 2

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 34

EDD5104ABTA, EDD5108ABTA

A Write command to the consecutive Read command interval: To interrupt the write operation

Destination row of the consecutive read command

Bank address

1. Same Same ACTIVE

2. Same Different — —*1

3. Different Any ACTIVE

IDLE —*

Row address State Operation

Note: 1. Precharge must be preceded to read command. Therefore read command can not interrupt the write

operation in this case.

WRITE to READ Command Interval (Same bank, same ROW address)

t1t0 t2 t3 t4 t5 t6 t7 t8

/CK

DM must be input 1 cycle prior to the read command input to prevent from being written invalid data. In case, the read command is input in the next cycle of the write command, DM is not necessary.

Command

DQS

1 cycle

READ NOPWRIT

in0 in1

Data masked

CL=2

in2

out0 out1

out2 out3

[WRITE to READ delay = 1 clock cycle]

High-Z

BL = 4 CL= 2

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 35

EDD5104ABTA, EDD5108ABTA

t1t0 t2 t3 t4 t5 t6 t7 t8

/CK

Command

DQS

/CK

READ NOPNOPWRIT

2 cycle

in0 in1

Data masked

in2 in3

CL=2

out0 out1

out2 out3

High-Z

[WRITE to READ delay = 2 clock cycle]

t1t0 t2 t3 t4 t5 t6 t7 t8

READWRIT NOP NOP

BL = 4 CL= 2

DQS

in0 in1

3 cycle

tWTR*

in2 in3

Data masked

CL=2

out0 out1

out2 out3

Note: tWTR is referenced from the first positive CK edge after the last desired data in pair tWTR.

[WRITE to READ delay = 3 clock cycle]

BL = 4 CL= 2

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 36

EDD5104ABTA, EDD5108ABTA

A Read command to the consecutive Precharge command interval (same bank): To output all data

To complete a burst read operation and get a burst length of data, the consecutive precharge command must be issued tRPD (= BL/ 2 cycles) after the read command is issued.

t1t0 t2 t3 t4 t5 t6 t7 t8

/CK

Command

PRE/ PALL

out0 out1 out2 out3

DQS

READ

NOPNOP NOP

tRPD = BL/2

READ to PRECHARGE Command Interval (same bank): To output all data (CL = 2, BL = 4)

t1t0 t2 t3 t4 t5 t6 t7 t8

CLK

/CLK

PRE/ PALL

out0 out1 out2 out3

DQS

READ

NOP NOP NOP

tRPD = BL/2

READ to PRECHARGE Command Interval (same bank): To output all data (CL = 2.5, BL = 4)

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 37

EDD5104ABTA, EDD5108ABTA

READ to PRECHARGE Command Interval (same bank): To stop output data

A burst data output can be interrupted with a precharge command. All DQ pins and DQS pins become High-Z tHZP (= CL) after the precharge command.

t1t0 t2 t3 t4 t5 t6 t7 t8

/CK

Command

DQS

NOP NOP

READ

PRE/PALL

out0 out1

tHZP

High-Z

READ to PRECHARGE Command Interval (same bank): To stop output data (CL = 2, BL = 2, 4, 8)

t1t0 t2 t3 t4 t5 t6 t7 t8

/CK

Command

DQS

NOP NOP

READ

PRE/PALL

CL = 2.5

out0 out1

High-Z

tHZP

READ to PRECHARGE Command Interval (same bank): To stop output data (CL = 2.5, BL = 2, 4, 8)

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 38

EDD5104ABTA, EDD5108ABTA

A Write command to the consecutive Precharge command interval (same bank)

The minimum interval tWPD ((BL/2 + 3 for tCK = 7.5 ns, BL/2 + 4 for tCK = 6 ns) cycles) is necessary between the write command and the precharge command.

t1t0 t2 t3 t4 t5 t6 t7

/CK

Command

DQS

WRIT NOP NOP

tWPD

tWR

in0 in1 in2 in3

Last data input

PRE/PALL

WRITE to PRECHARGE Command Interval (same bank) (BL = 4)

Precharge Termination in Write Cycles

During a burst write cycle without auto precharge, the burst write operation is terminated by a precharge command of the same bank. In order to write the last input data, tWR (min) must be satisfied. When the precharge command is issued, the invalid data must be masked by DM.

t1t0 t2 t3 t4 t5 t6 t7

/CK

Command

DQS

WRIT NOP NOP

tWR

in0 in1

in2 in3

Data masked

PRE/PALL

Precharge Termination in Write Cycles (same bank) (BL = 4)

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 39

EDD5104ABTA, EDD5108ABTA

Bank active command interval

Destination row of the consecutive ACT command

Bank address

1. Same Any ACTIVE

2. Different Any ACTIVE

IDLE tRRD after an ACT command, the next ACT command can be issued.

Row address

State

/CK

Operation

Two successive ACT commands can be issued at tRC interval. In between two successive ACT operations, precharge command should be executed.

Precharge the bank. tRP after the precharge command, the consecutive ACT command can be issued.

Command

Address

ACTV

Bank0

Active

tRRD

ROW: 1ROW: 0

Bank3 Active

tRC

PRE ACT

Bank0

Precharge

NOP NOPNOPACTACT

ROW: 0

Bank0

Active

Bank Active to Bank Active

Mode register set to Bank-active command interval

The interval between setting the mode register and executing a bank-active command must be no less than tMRD.

/CK

Command

Address

CODE BS and ROW

NOP NOPMRS ACT

Mode Register Set Bank3

tMRD

Active

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 40

EDD5104ABTA, EDD5108ABTA

DM Control

DM can mask input data. By setting DM to Low, data can be written. When DM is set to High, the corresponding data is not written, and the previous data is held. The latency between DM input and enabling/disabling mask function is 0.

t1 t2 t3 t4 t5 t6

DQS

Mask Mask

Write mask latency = 0

DM Control

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 41

Timing Waveforms

Command and Addresses Input Timing Definition

/CK

Command

(/RAS, /CAS,

/WE, /CS)

tIS

tIH

EDD5104ABTA, EDD5108ABTA

VREF

Address

Read Timing Definition

/CK

DQS

(Dout)

tCH

Write Timing Definition

/CK

DQS

(Din)

tWPRES

tCK

tRPRE

tDQSS

tCL

tCK

tWPRE

tDQSCK tDQSCK tDQSCK

tDQSQ

tLZ

tAC

tQH

tAC

tDQSL tDQSH tWPST

tDQSQ

tDQSCK

tDQSQ

tAC

tQH

tDSH tDSStDSS

VREF

tDQSCK tDQSCK tRPST

tQH

tAC

tDQSQ

tHZ

tQH

VREF

tDS tDH

Preliminary Data Sheet E0237E30 (Ver. 3.0)

tDIPW

tDIPW tDIPW

VREF

Page 42

Read Cycle

/CK

CKE

/CS

/RAS

/CAS

/WE

VIH

tCH

tIS tIH

tCK

tCL

tRCD

tIS tIH

tRAS

EDD5104ABTA, EDD5108ABTA

tRC

tRP

tIS tIH

tIH

tIS

tIS tIH

A10

Address

DQS

DQ (output)

tIS tIH

Bank 0

Bank 0 Active

Active

High-Z

tIS tIH

Bank 0

Bank 0 Read

Read

tRPRE

Bank 0

Bank 0 Precharge

Precharge

tRPST

tIS tIH

CL = 2 BL = 4 Bank0 Access = VIH or VIL

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 43

Write Cycle

/CK

CKE

/CS

VIH

tCH

tIS tIH

tCK

tCL

tRCD

tIS tIH

tRC

tRAS

EDD5104ABTA, EDD5108ABTA

tRP

tIS tIH

/RAS

/CAS

/WE

A10

Address

DQS

(input)

tIS tIH

tDS

tDQSH

tIS tIH

tIS

tIH

tIS tIH

tDQSL tWPSTtDQSS

tDS

tDH

tIS tIH

DQ (input)

tDH

Bank 0

Bank 0 Active

Active

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Bank 0 Write

tWR

Bank 0 Precharge

CL = 2 BL = 4 Bank0 Access = VIH or VIL

Page 44

Mode Register Set Cycle

/CK

CKE

/CS

/RAS

/CAS

/WE

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

VIH

EDD5104ABTA, EDD5108ABTA

Address

DQS

DQ (output)

Read/Write Cycle

/CK

CKE

/CS

/RAS /CAS

/WE

Address

VIH

code

valid

High-Z

tRP

Precharge If needed

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

R:a

code

Mode register set

C:a

R: b

tMRD

Bank 3 Active

C: b

Bank 3 Read

C:bR:b

Bank 3 Precharge

CL = 2 BL = 4 = VIH or VIL

C:b''

DQS

DQ (output)

DQ (input)

Bank 0 Active

Preliminary Data Sheet E0237E30 (Ver. 3.0)

High-Z

Bank 0 Read

Bank 3 Active

tRWD

Bank 3 Write

tWRD

Bank 3 Read

b’’

Read cycle CL = 2 BL = 4 =VIH or VIL

Page 45

Auto Refresh Cycle

/CK

CKE

/CS

/RAS

/CAS

/WE

VIH

EDD5104ABTA, EDD5108ABTA

Address

DQS

DQ (output)

DQ (input)

A10=1

Precharge If needed

tRP

High-Z

Auto Refresh

tRFC

R: b C: b

Bank 0 Active

Bank 0 Read

CL = 2 BL = 4 = VIH or VIL

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 46

Self Refresh Cycle

/CK

CKE

/CS

/RAS

/CAS

/WE

EDD5104ABTA, EDD5108ABTA

tIS tIH

CKE = low

Address

DQS

DQ (output)

DQ (input)

A10=1

Precharge If needed

tRP

Self refresh entry

High-Z

Self refresh exit

tSNR tSRD

Bank 0 Active

R: b C: b

Bank 0 Read

CL = 2.5 BL = 4 = VIH or VIL

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 47

Package Drawing

66-pin Plastic TSOP (II) 10.16mm(400)

PIN#1 ID

22.22 ± 0.10

66 34

133

0.65

EDD5104ABTA, EDD5108ABTA

Unit: mm

10.16

11.76 ± 0.20

0.17 to 0.32

0.13

MSAB

0.80 Nom

0.91 max. 0 to 8°

+0.08

1.0 ± 0.05

0.10

1.20 max

−0.05

0.10

0.60 ± 0.15

0.09 to 0.20

Note: This dimension does not include mold flash, protrusions or gate burrs. Mold flash, protrusions or gate burrs shall not exceed 0.20mm per side.

ECA-TS2-0029-01

0.25

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 48

EDD5104ABTA, EDD5108ABTA

Recommended Soldering Conditions

Please consult with our sales offices for soldering conditions of the EDD51XXABTA.

Type of Surface Mount Device

EDD51XXABTA: 66-pin Plastic TSOP (II) 10.16mm(400)

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 49

EDD5104ABTA, EDD5108ABTA

NOTES FOR CMOS DEVICES

1 PRECAUTION AGAINST ESD FOR MOS DEVICES

Exposing the MOS devices to a strong electric field can cause destruction of the gate oxide and ultimately degrade the MOS devices operation. Steps must be taken to stop generation of static electricity as much as possible, and quickly dissipate it, when once it has occurred. Environmental control must be adequate. When it is dry, humidifier should be used. It is recommended to avoid using insulators that easily build static electricity. MOS devices must be stored and transported in an anti-static container, static shielding bag or conductive material. All test and measurement tools including work bench and floor should be grounded. The operator should be grounded using wrist strap. MOS devices must not be touched with bare hands. Similar precautions need to be taken for PW boards with semiconductor MOS devices on it.

2 HANDLING OF UNUSED INPUT PINS FOR CMOS DEVICES

No connection for CMOS devices input pins can be a cause of malfunction. If no connection is provided to the input pins, it is possible that an internal input level may be generated due to noise, etc., hence causing malfunction. CMOS devices behave differently than Bipolar or NMOS devices. Input levels of CMOS devices must be fixed high or low by using a pull-up or pull-down circuitry. Each unused pin should be connected to V

or GND with a resistor, if it is considered to have a possibility of being an output

pin. The unused pins must be handled in accordance with the related specifications.

3 STATUS BEFORE INITIALIZATION OF MOS DEVICES

Power-on does not necessarily define initial status of MOS devices. Production process of MOS does not define the initial operation status of the device. Immediately after the power source is turned ON, the MOS devices with reset function have not yet been initialized. Hence, power-on does not guarantee output pin levels, I/O settings or contents of registers. MOS devices are not initialized until the reset signal is received. Reset operation must be executed immediately after power-on for MOS devices having reset function.

CME0107

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Page 50

EDD5104ABTA, EDD5108ABTA

The information in this document is subject to change without notice. Before using this document, confirm that this is the latest version.

No part of this document may be copied or reproduced in any form or by any means without the prior written consent of Elpida Memory, Inc.

Elpida Memory, Inc. does not assume any liability for infringement of any intellectual property rights (including but not limited to patents, copyrights, and circuit layout licenses) of Elpida Memory, Inc. or third parties by or arising from the use of the products or information listed in this document. No license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of Elpida Memory, Inc. or others.

Descriptions of circuits, software and other related information in this document are provided for illustrative purposes in semiconductor product operation and application examples. The incorporation of these circuits, software and information in the design of the customer's equipment shall be done under the full responsibility of the customer. Elpida Memory, Inc. assumes no responsibility for any losses incurred by customers or third parties arising from the use of these circuits, software and information.

[Product applications]

Elpida Memory, Inc. makes every attempt to ensure that its products are of high quality and reliability. However, users are instructed to contact Elpida Memory's sales office before using the product in aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment, medical equipment for life support, or other such application in which especially high quality and reliability is demanded or where its failure or malfunction may directly threaten human life or cause risk of bodily injury.

[Product usage]

Design your application so that the product is used within the ranges and conditions guaranteed by Elpida Memory, Inc., including the maximum ratings, operating supply voltage range, heat radiation characteristics, installation conditions and other related characteristics. Elpida Memory, Inc. bears no responsibility for failure or damage when the product is used beyond the guaranteed ranges and conditions. Even within the guaranteed ranges and conditions, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail-safes, so that the equipment incorporating Elpida Memory, Inc. products does not cause bodily injury, fire or other consequential damage due to the operation of the Elpida Memory, Inc. product.

[Usage environment]

This product is not designed to be resistant to electromagnetic waves or radiation. This product must be used in a non-condensing environment.

If you export the products or technology described in this document that are controlled by the Foreign Exchange and Foreign Trade Law of Japan, you must follow the necessary procedures in accordance with the relevant laws and regulations of Japan. Also, if you export products/technology controlled by U.S. export control regulations, or another country's export control laws or regulations, you must follow the necessary procedures in accordance with such laws or regulations.

If these products/technology are sold, leased, or transferred to a third party, or a third party is granted license to use these products, that third party must be made aware that they are responsible for compliance with the relevant laws and regulations.

M01E0107

Preliminary Data Sheet E0237E30 (Ver. 3.0)

Datasheet EDD5108ABTA-7B, EDD5108ABTA-7A, EDD5108ABTA-6B, EDD5104ABTA-7B, EDD5104ABTA-7A Datasheet (ELPID)

Specifications and Main Features

Frequently Asked Questions

User Manual

Description

Features

Pin Configurations

Ordering Information

Part number

Electrical Specifications

Absolute Maximum Ratings

Test Conditions

Timing Parameter Measured in Clock Cycle

Block Diagram

Pin Function

Command Operation

Command Truth Table

CKE Truth Table

Function Truth Table

Command Truth Table for CKE

Simplified State Diagram

Operation of the DDR SDRAM

Power-up Sequence

Mode Register and Extended Mode Register Set

Burst Operation

Read/Write Operations

Write operation

Burst Stop

Auto Precharge

Command Intervals

DM Control

Timing Waveforms

Command and Addresses Input Timing Definition

Read Timing Definition

Write Timing Definition

Read Cycle

Write Cycle

Mode Register Set Cycle

Read/Write Cycle

Auto Refresh Cycle

Self Refresh Cycle

Package Drawing

Recommended Soldering Conditions