Document Title
512K X 16 BIT LOW VOLTAGE CMOS SRAM
Revision History
Rev. No. History Issue Date Remark
0.0 Initial issue April 26, 2002 Preliminary
PRELIMINARY (April, 2002, Version 0.0) AMIC Technology, Inc.
Page 2
LP62E16512-T Series
Preliminary 512K X 16 BIT LOW VOLTAGE CMOS SRAM
Features
n Operating voltage: 1.65V to 2.2V
n Access times: 70 ns (max.)
n Current:
Very low power version: Operating: 40mA (max.)
Standby: 10µA (max.)
n Full static operation, no clock or refreshing required
n All inputs and outputs are directly TTL-compatible
n Common I/O using three-state output
n Data retention voltage: 1.2V (min.)
n Available in 48-ball CSP (8×10mm) packages
General Description
The LP62E16512-T is a low operating current 8,388,608bit static random access memory organized as 524,288
words by 16 bits and operates on low power voltage from
1.65V to 2.2V. It is built using AMIC's high performance
CMOS process.
Inputs and three-state outputs are TTL compatible and
allow for direct interfacing with common system bus
structures.
Two chip enable input is provided for POWER-DOWN,
device enable. Two byte enable inputs and an output
enable input are included for easy interfacing.
Data retention is guaranteed at a power supply voltage
as low as 1.2V.
Product Family
Product
Family
Operating
Temperature
VCC Range
Speed
Retention
(ICCDR, Typ.)
LP62E16512
-25°C ~ +85°C
1.65V~2.2V 70ns
1. Typical values are measured at VCC = 1.8V, TA = 25°C and not 100% tested.
2. Data retention current VCC = 1.2V.
Power Dissipation
Data
0.1µA 0.5µA
Pin Configurations
nn CSP (Chip Size Package) 48-pin Top View
A0
A
LB
I/O9
B
I/O10
C
GND
D
VCC
E
I/O15
F
I/O16
G
A18A8NCA9
H
OE
HB
I/O11
I/O12
I/O13
I/O14
A1A2CS2
A3
A4
A5A6
A17NCA7
A16
A14A15
A12
A13
A10A11NC
CS1
I/O2
I/O4
I/O5
I/O6
WE
Standby
(ISB1, Typ.)
654321
I/O1
I/O3
VCC
GND
I/O7
I/O8
Operating
Package
(ICC2, Typ.)
3mA 48 CSP
Type
PRELIMINARY (April, 2002, Version 0.0) 1 AMIC Technology, Inc.
Page 3
LP62E16512-T Series
Block Diagram
VCC
GND
INPUT
DATA
CIRCUIT
I/O9
I/O
16
A17
A18
I/O1
I/O8
CS1
A0
LB
CS2
LB
HB
OE
WE
CONTROL
CIRCUIT
DECODER
INPUT
DATA
CIRCUIT
1024 X 8192
MEMORY ARRAY
COLUMN I/O
PRELIMINARY (April, 2002, Version 0.0) 2 AMIC Technology, Inc.
Page 4
LP62E16512-T Series
Pin Description - CSP
Symbol Description Symbol Description
A0 - A18 Address Inputs
1CS , CS2
I/O1- I/O16Data Input/Output VCC Power Supply
WE
LB
Chip Enable
Write Enable Input GND Ground
Byte Enable Input
(I/O1- I/O8)
HB
OE
NC No Connection
Higher Byte Enable Input
(I/O9- I/O16)
Output Enable
Recommended DC Operating Conditions
(TA = -25°C to + 85°C)
Symbol Parameter Min. Typ. Max. Unit
VCC Supply Voltage 1.65 1.8 2.2 V
GND Ground 0 0 0 V
VIHInput High Voltage 1.4 - VCC + 0.3 V
VILInput Low Voltage -0.3 - +0.4 V
CLOutput Load - - 30 pF
TTL Output Load - - 1 -
PRELIMINARY (April, 2002, Version 0.0) 3 AMIC Technology, Inc.
Page 5
LP62E16512-T Series
Absolute Maximum Ratings*
VCC to GND ..............................................-0.5V to +3.0V
IN, IN/OUT Volt to GND................... -0.5V to VCC + 0.5V
Operating Temperature, Topr...................-25°C to +85°C
Storage Temperature, Tstg.....................-55°C to +125°C
Power Dissipation, PT......................................................................0.7W
*Comments
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to this device.
These are stress ratings only. Functional operation of this
device at these or any other conditions above those
indicated in the operational sections of this specification
is not implied or intended. Exposure to the absolute
maximum rating conditions for extended periods may
affect device reliability.
DC Electrical Characteristics (TA = -25°C to + 85°C, VCC = 1.65V to 2.2V, GND = 0V)
Symbol Parameter
Min. Max.
ILI
Input Leakage Current - 1
ILO
ICC
Output Leakage Current
Active Power Supply
Current
LP62E16512-70LLT
-
1
- 5 mA
Unit Conditions
VIN = GND to VCC
µA
µA
1CS = VIH or CS2 = VIL or
LB = HB = VIH
VI/O = GND to VCC
1CS = VIL , CS2 = VIH ,
LB = VIL or HB = VIL , II/O = 0mA
ICC1
- 40 mA
CS2 = VIH , LB = VIL or HB = VIL
Min. Cycle, Duty = 100%,1CS = VIL ,
ICC2
Dynamic Operating
Current
- 5 mA
II/O = 0mA
1CS ≤ 0.2V, CS2 ≥ VCC-0.2V ,
LB ≤ 0.2V or HB ≤ 0.2V
f = 1MHz , II/O = 0mA
ISB- 1 mA
Standby Current
ISB1
- 10
µA
1CS = VIH or CS2 = VIL or
LB = HB = VIH
1CS ≥ VCC - 0.2V or CS2 ≤ 0.2V or
LB = HB ≥ VCC-0.2V
VIN ≥ VCC-0.2V or VIN ≤ 0.2V
VOLOutput Low Voltage - 0.2 V IOL = 0.1 mA
VOHOutput High Voltage 1.4 - V IOH = -1.0 mA
PRELIMINARY (April, 2002, Version 0.0) 4 AMIC Technology, Inc.
Page 6
LP62E16512-T Series
OE WE LB HB
Truth Table
CS2
1CS
H X X X X X High - Z High - Z ISB1, ISB
X L X X X X High - Z High - Z ISB1, ISB
X X X X H H High - Z High - Z ISB1, ISB
L L Read Read ICC1, ICC2, ICC
L H L H L H Read High - Z ICC1, ICC2, ICC
H L High - Z Read ICC1, ICC2, ICC
L L Write Write ICC1, ICC2, ICC
L H X L L H Write High - Z ICC1, ICC2, ICC
H L High - Z Write ICC1, ICC2, ICC
L H H H L X High - Z High - Z ICC1, ICC2, ICC
L H H H X L High - Z High - Z ICC1, ICC2, ICC
Note: X = H or L
I/O1 to I/O8 Mode I/O9 to I/O16 Mode VCC Current
Capacitance (TA = 25°C, f = 1.0MHz)
Symbol Parameter Min. Max. Unit Conditions
CIN* Input Capacitance 6 pF VIN = 0V
CI/O* Input/Output Capacitance 8 pF VI/O = 0V
* These parameters are sampled and not 100% tested.
PRELIMINARY (April, 2002, Version 0.0) 5 AMIC Technology, Inc.
Page 7
LP62E16512-T Series
AC Characteristics (TA = -25°C to +85°C, VCC = 1.65V to 2.2V)
Symbol Parameter
Min. Max.
Read Cycle
tRCRead Cycle Time 70 - ns
tAAAddress Access Time - 70 ns
tAcs1 , tAcs2Chip Enable Access Time - 70 ns
tBEByte Enable Access Time - 70 ns
tOEOutput Enable to Output Valid - 35 ns
tCLZ1 , tCLZ2Chip Enable to Output in Low Z 10 - ns
tBLZByte Enable to Output in Low Z 10 - ns
tOLZOutput Enable to Output in Low Z 5 - ns
tCHZ1 , tCHZ2Chip Disable to Output in High Z - 25 ns
tBHZByte Disable to Output in High Z - 25 ns
tOHZOutput Disable to Output in High Z - 25 ns
tOHOutput Hold from Address Change 5 - ns
Write Cycle
LP62E16512-70LLT
Unit
tWCWrite Cycle Time 70 - ns
tCW1 , tCW2Chip Enable to End of Write 60 - ns
tBWByte Enable to End of Write 60 - ns
tASAddress Setup Time 0 - ns
tAWAddress Valid to End of Write 60 - ns
tWPWrite Pulse Width 50 - ns
tWRWrite Recovery Time 0 - ns
tWHZWrite to Output in High Z - 25 ns
tDWData to Write Time Overlap 30 - ns
tDHData Hold from Write Time 0 - ns
tOWOutput Active from End of Write 5 - ns
Note: tCLZ1 , tCLZ2 , tBLZ , tOLZ , tCHZ1, tCHZ2 , tBHZ and tOHZ and tWHZ are defined as the time at which the outputs achieve the
open circuit condition and are not referred to output voltage levels.
PRELIMINARY (April, 2002, Version 0.0) 6 AMIC Technology, Inc.
Page 8
LP62E16512-T Series
Timing Waveforms
Read Cycle 1
Address
DOUT
(1, 2, 4)
tRC
tAA
tOH
tOH
Read Cycle 2
Address
CS1
CS2
HB, LB
OE
DOUT
(1, 2, 3)
tRC
tAA
tCLZ1 , tCLZ2
tACS1 , tACS2
5
tBLZ
5
tOLZ
tBE
tOE
tOHZ
tCHZ1
tBHZ
5
, tCHZ2
5
Notes: 1. WE is high for Read Cycle.
2. Device is continuously enabled 1CS = VIL, or CS2 = VIH ,HB = VIL and, or LB = VIL.
3. Address valid prior to or coincident with 1CS and (HB and, or LB ) transition low or CS2 transition High.
4. OE = VIL.
5. Transition is measured ±200mV from steady state. This parameter is sampled and not 100% tested.
PRELIMINARY (April, 2002, Version 0.0) 7 AMIC Technology, Inc.
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LP62E16512-T Series
Timing Waveforms (continued)
Write Cycle 1
(Write Enable Controlled)
tWC
Address
3
tAW
tCW
CS1
CS2
tBW
HB, LB
tWR
WE
DATA IN
DATA OUT
1
tAS
4
tWHZ
tWP
2
tDW
tDH
tOW
PRELIMINARY (April, 2002, Version 0.0) 8 AMIC Technology, Inc.
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LP62E16512-T Series
Timing Waveforms (continued)
Write Cycle 2
(Chip Enable Controlled)
tWC
Address
CS1
CS2
HB, LB
WE
DATA IN
DATA OUT
tAW
1
tAS
4
tWHZ
tWP
tCW1 , tCW
tBW
2
tDW
tWR
3
tDH
tOW
PRELIMINARY (April, 2002, Version 0.0) 9 AMIC Technology, Inc.
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LP62E16512-T Series
Timing Waveforms (continued)
Write Cycle 3
(Byte Enable Controlled)
tWC
Address
tAW
tCW1 , tCW2
CS1
3
tWR
CS2
HB, LB
1
tAS
tBW
2
tWP
WE
tDH
tOW
DATA IN
DATA OUT
tWHZ
tDW
4
Notes: 1. tAS is measured from the address valid to the beginning of Write.
2. A Write occurs during the overlap (tWP, tBW) of a low 1CS , WE and (HB and , or LB ) or a high CS2.
3. tWR is measured from the earliest of 1CS or WE or (HB and , or LB ) going high or CS2 going Low to the end of
the Write cycle.
4. OE level is high or low.
5. Transition is measured ±200mV from steady state. This parameter is sampled and not 100% tested.
PRELIMINARY (April, 2002, Version 0.0) 10 AMIC Technology, Inc.
Page 12
LP62E16512-T Series
AC Test Conditions
Input Pulse Levels 0.2V to VCC-0.2V
Input Rise And Fall Time 5 ns
Input and Output Timing Reference Levels 0.8V
Output Load See Figures 1 and 2
TTL
CL
30pF
* Including scope and jig.* Including scope and jig.