Samsung K4F661612B-TL60, K4F661612B-TL50, K4F661612B-TL45, K4F661612B-TC45, K4F641612B-TL60 Datasheet

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CMOS DRAMK4F661612B,K4F641612B
This is a family of 4,194,304 x 16 bit Fast Page Mode CMOS DRAMs. Fast Page Mode offers high speed random access of memory cells within the same row. Refresh cycle(4K Ref. or 8K Ref.), access time (-45, -50 or -60), power consumption(Normal or Low power) are optional features of this family. All of this family have CAS-before-RAS refresh, RAS-only refresh and Hidden refresh capabilities. Furthermore, Self-refresh operation is available in L-version. This 4Mx16 Fast Page Mode DRAM family is fabricated using Samsung′s advanced CMOS process to realize high band-width, low power consumption and high reliability.
• Fast Page Mode operation
CAS -before-RAS refresh capability
RAS -only and Hidden refresh capability
• Self-refresh capability (L-ver only)
Fast parallel test mode capability
• LVTTL(3.3V) compatible inputs and outputs
Early Write or output enable controlled write
JEDEC Standard pinout
• Available in Plastic TSOP(II) packages
• +3.3V±0.3V power supply
SAMSUNG ELECTRONICS CO., LTD. reserves the right to change products and specifications without notice.
4M x 16bit CMOS Dynamic RAM with Fast Page Mode
DESCRIPTION
Control Clocks
Lower
Data out
Buffer
RAS UCAS LCAS
W
Vcc Vss
DQ0
to
DQ7
A0~A12
(A0~A11)*1
A0~A8
(A0~A9)*1
Memory Array
4,194,304 x 16
Cells
FUNCTIONAL BLOCK DIAGRAM
Note) *1 : 4K Refresh
Sense Amps & I/O
Upper
Data in
Buffer Upper
Data out
Buffer
Lower
Data in
Buffer
DQ8
to
DQ15
OE
Row Decoder
Column Decoder
VBB Generator
Refresh Timer
Refresh Control
Refresh Counter
Row Address Buffer
Col. Address Buffer
Part Identification
- K4F661612B-TC/L(3.3V, 8K Ref., TSOP)
- K4F641612B-TC/L(3.3V, 4K Ref., TSOP)
FEATURES
Refresh Cycles Part
NO.
Refresh
cycle
Refresh time
Normal L-ver
K4F661612B* 8K
64ms 128ms
K4F641612B 4K
Performance Range
Speed
tRAC tCAC tRC tPC
-45 45ns 12ns 80ns 31ns
-50 50ns 13ns 90ns 35ns
-60 60ns 15ns 110ns 40ns
Active Power Dissipation
Speed 8K 4K
-45 360 468
-50 324 432
-60 288 396
Unit : mW
* Access mode & RAS only refresh mode : 8K cycle/64ms(Normal), 8K cycle/128ms(L-ver.)
CAS-before-RAS & Hidden refresh mode
: 4K cycle/64ms(Normal), 4K cycle/128ms(L-ver.)
CMOS DRAMK4F661612B,K4F641612B
PIN CONFIGURATION (Top Views)
VCC DQ0 DQ1 DQ2 DQ3
VCC DQ4 DQ5 DQ6 DQ7
N.C
VCC
W
RAS
N.C N.C N.C N.C
A0 A1 A2 A3 A4 A5
VCC
VSS DQ15 DQ14 DQ13 DQ12 VSS DQ11 DQ10 DQ9 DQ8 N.C VSS LCAS UCAS OE N.C N.C A12(N.C)* A11 A10 A9 A8 A7 A6 VSS
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
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26
Pin Name Pin function
A0 - A12 Address Inputs(8K Product) A0 - A11 Address Inputs(4K Product) DQ0 - 15 Data In/Out VSS Ground RAS Row Address Strobe UCAS Upper Column Address Strobe LCAS Lower Column Address Strobe W Read/Write Input OE Data Output Enable VCC Power(+3.3V) N.C No Connection
(400mil TSOP(II))
*(N.C) : N.C for 4K Refresh Product
K4F661612B-T
K4F641612B-T
CMOS DRAMK4F661612B,K4F641612B
ABSOLUTE MAXIMUM RATINGS
* Permanent device damage may occur if "ABSOLUTE MAXIMUM RATINGS" are exceeded. Functional operation should be restricted to
the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Parameter Symbol Rating Units
Voltage on any pin relative to VSS VIN,VOUT -0.5 to +6.5 V Voltage on VCC supply relative to VSS VCC -0.5 to +4.6 V Storage Temperature Tstg -55 to +150 °C Power Dissipation PD 1 W Short Circuit Output Current IOS Address 50 mA
RECOMMENDED OPERATING CONDITIONS (Voltage referenced to Vss, TA= 0 to 70°C)
*1 : 6.5V at pulse width 15ns which is measured at VCC *2 : -1.3 at pulse width 15ns which is measured at VSS
Parameter Symbol Min Typ Max Units
Supply Voltage VCC 3.0 3.3 3.6 V Ground VSS 0 0 0 V Input High Voltage VIH 2.0 -
+5.5
*1
V
Input Low Voltage VIL
-0.3
*2
- 0.8 V
DC AND OPERATING CHARACTERISTICS (Recommended operating conditions unless otherwise noted.)
Parameter Symbol Min Max Units
Input Leakage Current (Any input 0≤VIN≤VCC+0.3V, all other pins not under test=0 Volt)
II(L) -5 5 uA
Output Leakage Current (Data out is disabled, 0V≤VOUT≤VCC)
IO(L) -5 5 uA
Output High Voltage Level(IOH=-2mA) VOH 2.4 - V Output Low Voltage Level(IOL=2mA) VOL - 0.4 V
CMOS DRAMK4F661612B,K4F641612B
*Note :
ICC1, ICC3, ICC4 and ICC6 are dependent on output loading and cycle rates. Specified values are obtained with the output open. ICC is specified as an average current. In ICC1, ICC3 and ICC6, address can be changed maximum once while RAS=VIL. In ICC4, address can be changed maximum once within one fast page mode cycle time, tPC.
DC AND OPERATING CHARACTERISTICS (Continued)
ICC1* : Operating Current (RAS and UCAS, LCAS, Address cycling @tRC=min.) ICC2 : Standby Current (RAS=UCAS=LCAS=W=VIH) ICC3* : RAS-only Refresh Current (UCAS=LCAS=VIH, RAS, Address cycling @tRC=min.) ICC4* : Fast Page Mode Current (RAS=VIL, UCAS or LCAS, Address cycling @tPC=min.) ICC5 : Standby Current (RAS=UCAS=LCAS=W=VCC-0.2V) ICC6* : CAS-Before-RAS Refresh Current (RAS and UCAS or LCAS cycling @tRC=min) ICC7 : Battery back-up current, Average power supply current, Battery back-up mode Input high voltage(VIH)=VCC-0.2V, Input low voltage(VIL)=0.2V, UCAS, LCAS=CAS-before-RAS cycling or 0.2V, W, OE=VIH, Address=Dont care DQ=Open, TRC=31.25us ICCS : Self Refresh Current RAS=UCAS=LCAS=0.2V, W=OE=A0 ~ A12(A11)=VCC-0.2V or 0.2V, DQ0 ~ DQ15=VCC-0.2V, 0.2V or Open
Symbol Power Speed
Max
Units
K4F661612B K4F641612B
ICC1 Dont care
-45
-50
-60
100
90 80
130 120 110
mA mA mA
ICC2
Normal
L
Dont care
2 2
2 2
mA mA
ICC3 Dont care
-45
-50
-60
100
90 80
130 120 110
mA mA mA
ICC4 Dont care
-45
-50
-60
70 60 50
80 70 60
mA mA mA
ICC5
Normal
L
Dont care
500 300
500 300
uA uA
ICC6 Dont care
-45
-50
-60
100
90 80
130 120 110
mA mA mA
ICC7 L Dont care 400 400 uA ICCS L Dont care 400 400 uA
CMOS DRAMK4F661612B,K4F641612B
CAPACITANCE (TA=25°C, VCC=3.3V, f=1MHz)
Parameter Symbol Min Max Units
Input capacitance [A0 ~ A12] CIN1 - 5 pF Input capacitance [RAS, UCAS, LCAS, W, OE] CIN2 - 7 pF Output capacitance [DQ0 - DQ15] CDQ - 7 pF
Test condition : VCC=3.3V±0.3V, Vih/Vil=2.2/0.7V, Voh/Vol=2.0/0.8V
Parameter Symbol
-45 -50 -60 Units Note
Min Max Min Max Min Max
Random read or write cycle time
tRC
80 90 110
ns
Read-modify-write cycle time
tRWC
115 133 153 ns
Access time from RAS
tRAC
45 50 60 ns 3,4,10
Access time from CAS
tCAC
12 13 15 ns 3,4,5
Access time from column address
tAA
23 25 30 ns 3,10
CAS to output in Low-Z
tCLZ
0 0 0 ns 3
Output buffer turn-off delay
tOFF
0 13 0 13 0 13 ns 6
Transition time (rise and fall)
tT
1 50 1 50 1 50 ns 2
RAS precharge time
tRP
25 30 40 ns
RAS pulse width
tRAS
45 10K 50 10K 60 10K ns
RAS hold time
tRSH
12 13 15 ns
CAS hold time
tCSH
45 50 60 ns
CAS pulse width
tCAS
12 10K 13 10K 15 10K ns
RAS to CAS delay time
tRCD
18 33 20 37 20 45 ns 4
RAS to column address delay time
tRAD
13 22 15 25 15 30 ns 10
CAS to RAS precharge time
tCRP
5 5 5 ns
Row address set-up time
tASR
0 0 0 ns
Row address hold time
tRAH
8 10 10 ns
Column address set-up time
tASC
0 0 0 ns 13
Column address hold time
tCAH
8 10 10 ns 13
Column address to RAS lead time
tRAL
23 25 30 ns
Read command set-up time
tRCS
0 0 0 ns
Read command hold time referenced to CAS
tRCH
0 0 0 ns 8
Read command hold time referenced to RAS
tRRH
0 0 0 ns 8
Write command hold time
tWCH
8 10 10 ns
Write command pulse width
tWP
8 10 10 ns
Write command to RAS lead time
tRWL
13 15 15 ns
Write command to CAS lead time
tCWL
12 13 15 ns 16
Data set-up time
tDS
0 0 0 ns 9,19
Data hold time
tDH
10 10 10 ns 9,19
AC CHARACTERISTICS (0°CTA70°C, See note 1,2)
CMOS DRAMK4F661612B,K4F641612B
AC CHARACTERISTICS (Continued)
Parameter Symbol
-45 -50 -60 Units Note
Min Max Min Max Min Max
Refresh period (Normal)
tREF
64 64 64 ms
Refresh period (L-ver)
tREF
128 128 128 ms
Write command set-up time
tWCS
0 0 0 ns 7
CAS to W delay time
tCWD
32 36 38 ns 7,15
RAS to W delay time
tRWD
67 73 83 ns 7
Column address to W delay time
tAWD
43 48 53 ns 7
CAS precharge W delay time
tCPWD
48 53 60 ns
CAS set-up time (CAS -before-RAS refresh)
tCSR
5 5 5 ns 17
CAS hold time (CAS -before-RAS refresh)
tCHR
10 10 10 ns 18
RAS to CAS precharge time
tRPC
5 5 5 ns
Access time from CAS precharge
tCPA
26 30 35 ns 3
Fast Page mode cycle time
tPC
31 35 40 ns
Fast Page mode read-modify-write cycle time
tPRWC
70 76 85 ns
CAS precharge time (Fast page cycle)
tCP
9 10 10 ns 14
RAS pulse width (Fast page cycle)
tRASP
45 200K 50 200K 60 200K ns
RAS hold time from CAS precharge
tRHCP
28 30 35 ns
OE access time
tOEA
12 13 15 ns
OE to data delay
tOED
12 13 13 ns
Output buffer turn off delay time from OE
tOEZ
0 13 0 13 0 13 ns 6
OE command hold time
tOEH
12 13 15 ns
Write command set-up time (Test mode in)
tWTS
10 10 10 ns 11
Write command hold time (Test mode in)
tWTH
15 15 15 ns 11
W to RAS precharge time (C-B-R refresh)
tWRP
10 10 10 ns
W to RAS hold time (C-B-R refresh)
tWRH
10 10 10 ns
RAS pulse width (C-B-R self refresh)
tRASS
100 100 100 us 20,21,22
RAS precharge time (C-B-R self refresh)
tRPS
80 90 110 ns 20,21,22
CAS hold time (C-B-R self refresh)
tCHS
-50 -50 -50 ns 20,21,22
CMOS DRAMK4F661612B,K4F641612B
TEST MODE CYCLE
Parameter Symbol
-45 -50 -60 Units Note
Min Max Min Max Min Max
Random read or write cycle time
tRC
85 95 115 ns
Read-modify-write cycle time
tRWC
120 138 160 ns
Access time from RAS
tRAC
50 55 65 ns 3,4,10,12
Access time from CAS
tCAC
17 18 20 ns 3,4,5,12
Access time from column address
tAA
28 30 35 ns 3,10,12
RAS pulse width
tRAS
50 10K 55 10K 65 10K ns
CAS pulse width
tCAS
17 10K 18 10K 20 10K ns
RAS hold time
tRSH
17 18 20 ns
CAS hold time
tCSH
50 55 65 ns
Column Address to RAS lead time
tRAL
28 30 35 ns
CAS to W delay time
tCWD
37 41 43 ns 7
RAS to W delay time
tRWD
72 78 88 ns 7
Column Address to W delay time
tAWD
48 53 58 ns 7
Fast Page mode cycle time
tPC
36 40 45 ns
Fast Page mode read-modify-write cycle time
tPRWC
75 81 90 ns
RAS pulse width (Fast page cycle)
tRASP
50 200K 55 200K 65 200K ns
Access time from CAS precharge
tCPA
31 35 40 ns 3
OE access time
tOEA
17 18 20 ns
OE to data delay
tOED
17 18 18 ns
OE command hold time
tOEH
17 18 20 ns
( Note 11 )
CMOS DRAMK4F661612B,K4F641612B
NOTES
An initial pause of 200us is required after power-up followed by any 8 RAS-only refresh or CAS-before-RAS refresh cycles before proper device operation is achieved. VIH(min) and VIL(max) are reference levels for measuring timing of input signals. Transition times are measured between VIH(min) and VIL(max) and are assumed to be 5ns for all inputs. Measured with a load equivalent to 1 TTL load and 100pF. Operation within the tRCD(max) limit insures that tRAC(max) can be met, tRCD(max) is specified as a reference point only. If tRCD is greater than the specified tRCD(max) limit, then access time is controlled exclusively by tCAC. Assumes that tRCDtRCD(max).
tOFF(min)and tOEZ(max) define the time at which the output achieves the open circuit condition and are not referenced Voh
or Vol.
tWCS, tRWD, tCWD and tAWD are non restrictive operating parameters. They are included in the data sheet as electrical char-
acteristics only. If tWCStWCS(min), the cycle is an early write cycle and the data output will remain high impedance for the duration of the cycle. If tCWDtCWD(min), tRWDtRWD(min) and tAWDtAWD(min), then the cycle is a read-modify-write cycle and the data output will contain the data read from the selected address. If neither of the above conditions is satisfied, the condition of the data out is indeterminate. Either tRCH or tRRH must be satisfied for a read cycle. These parameters are referenced to CAS falling edge in early write cycles and to W falling edge in read-modify-write cycles. Operation within the tRAD(max) limit insures that tRAC(max) can be met. tRAD(max) is specified as a reference point only. If tRAD is greater than the specified tRAD(max) limit, then access time is controlled by tAA. These specifications are applied in the test mode. In test mode read cycle, the value of tRAC, tAA, tCAC is delayed by 2ns to 5ns for the specified values. These parameters should be specified in test mode cycles by adding the above value to the specified value in this data sheet.
5.
6.
7.
8.
9.
10.
11.
12.
1.
2.
3.
4.
K4F64(6)1612B Truth Table
RAS LCAS UCAS W OE DQ0 - DQ7 DQ8-DQ15 STATE
H X X X X Hi-Z Hi-Z Standby
L H H X X Hi-Z Hi-Z Refresh L L H H L DQ-OUT Hi-Z Byte Read L H L H L Hi-Z DQ-OUT Byte Read L L L H L DQ-OUT DQ-OUT Word Read L L H L H DQ-IN - Byte Write L H L L H - DQ-IN Byte Write L L L L H DQ-IN DQ-IN Word Write L L L H H Hi-Z Hi-Z -
CMOS DRAMK4F661612B,K4F641612B
tASC, tCAH are referenced to the earlier CAS falling edge. tCP is specified from the later CAS rising edge in the previous cycle to the earlier CAS falling edge in the next cycle. tCWD is referenced to the later CAS falling edge at word read-modify-write cycle. tCWL is specified from W falling edge to the earlier CAS rising edge. tCSR is referenced to the earlier CAS falling edge before RAS transition low.
tCHR is referenced to the later CAS rising edge after RAS transition low.
tDS is specified for the earlier CAS falling edge and tDH is specified by the later CAS falling edge.
If tRASS100us, then RAS precharge time must use tRPS instead of tRP. For RAS-only refresh and burst CAS-before-RAS refresh mode, 4096(4K/8K) cycles of burst refresh must be executed within 64ms before and after self refresh, in order to meet refresh specification. For distributed CAS-before-RAS with 15.6us interval CAS-before-RAS should be executed with in 15.6us immediately before and after self refresh in order to meet refresh specification.
tCSR tCHR
RAS
LCAS
UCAS
tDS tDH
LCAS
UCAS
DQ0 ~ DQ15
Din
21.
20.
19.
15.
14.
13.
18.
17.
16.
22.
CMOS DRAMK4F661612B,K4F641612B
RAS
VIH - VIL -
UCAS
VIH - VIL -
A
VIH - VIL -
W
VIH - VIL -
OE
VIH - VIL -
VOH - VOL -
DQ0 ~ DQ7
COLUMN
ADDRESS
ROW
ADDRESS
tRAS
tRC
tCRP
tRP
tCSH
tRSHtRCD
tCAS
tRAL
tASR tRAH
tASC
tCAH
tCRP
tAA
tOEA
tCAC
tCLZ
tRAC
OPEN
tOFF
tRCH
Dont care
Undefined
LCAS
VIH - VIL -
tCRP
tCSH
tRSHtRCD
tCAS
tRAD
tCRP
tRRH
VOH - VOL -
DQ8 ~ DQ15
tCAC
tCLZ
tRAC
OPEN DATA-OUT
DATA-OUT
tOFF
tOEZ
tOEZ
tRCS
WORD READ CYCLE
CMOS DRAMK4F661612B,K4F641612B
tCRP
NOTE : DIN = OPEN
LOWER BYTE READ CYCLE
RAS
VIH - VIL -
LCAS
VIH - VIL -
A
VIH - VIL -
W
VIH - VIL -
OE
VIH - VIL -
VOH - VOL -
DQ0 ~ DQ7
COLUMN
ADDRESS
ROW
ADDRESS
tRAS
tRC
tRP
tCSH
tRSHtRCD
tCAS
tRAL
tRAD
tASR tRAH
tASC
tCAH
tCRP
tAA
tOEA
tCAC
tCLZ
tRAC
OPEN
DATA-OUT
tOEZ
tOFF
tRCH
Dont care
Undefined
tRPC
UCAS
VIH - VIL -
OPEN
VOH - VOL -
DQ8 ~ DQ15
tRCS
tRRH
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