The K4S51153LF is 536,870,912 bits synchronous high data
rate Dynamic RAM organized as 4 x 8,388,608 words by 16 bits,
fabricated with SAMSUNG’s high performance CMOS technology. Synchronous design allows precise cycle control with the
use of system clock and I/O transactions are possible on every
clock cycle. Range of operating frequencies, programmable
burst lengths and programmable latencies allow the same
device to be useful for a variety of high bandwidth and high performance memory system applications.
1. In case of 40MHz Frequency , CL1 can be supported.
2. Samsung are not designed or manufactured for use in a device or system that is used under circumstance in which human life is potentially at stake.
Please contact to the memory marketing team in samsung electronics when considering the use of a product contained herein for any specific pur
pose, such as medical, aerospace, nuclear, military, vehicular or undersea repe ater use.
Storage temperatureT
Power dissipationP
Short circuit currentI
NOTES:
Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded.
Functional operation should be restricted to recommended operating condition.
Exposure to higher than recommended voltage for extended periods of time could affect device reliability.
STG-55 ~ +150°C
D1.0W
OS50mA
DC OPERATING CONDITIONS
Recommended operating conditions (Voltage referenced to VSS = 0V, TA = -25 to 70°C )
ParameterSymbolMinTypMaxUnitNote
VDD2.32.52.7V
Supply voltage
Input logic high voltageVIH0.8 x VDDQ-VDDQ + 0.3V2
Input logic low voltageVIL-0.300.3V3
Output logic high voltageVOHVDDQ -0.2 --VIOH = -0.1mA
Output logic low voltageVOL--0.2VIOL = 0.1mA
Input leakage current ILI-2-2uA4
NOTES :
1. Samsung can support VDDQ 2.5V(in general case) and 1.8V(in specific case) for VDD 2.5V products. Please contact to the
memory marketing team in Samsung Electronics when considering the use of VDDQ 1.8V(Min 1.65V).
2. VIH (max) = 3.0V AC.The overshoot voltage duration is ≤ 3ns.
3. VIL (min) = -1.0V AC. The undershoot voltage duration is ≤ 3ns.
4. Any input 0V ≤ VIN ≤ VDDQ.
Input leakage currents include Hi-Z output leakage for all bi-directional buffers with tri-state outputs.
5. Dout is disabled, 0V ≤ VOUT ≤ VDDQ.
VDDQ
2.32.52.7V
1.65-2.7V1
CAPACITANCE(VDD = 2.5V, TA = 23°C, f = 1MHz, VREF =0.9V ± 50 mV)
Input signals are changed one time during 20ns
CKE ≥ VIH(min), CLK ≤ VIL(max), tCC = ∞
Input signals are stable
707065mA1
20
10
45mA
30mA
IO = 0 mA
Page burst
ICC4
4Banks Activated
t
CCD = 2CLKs
110100100mA1
UnitNote
mA
mA
mA
Refresh CurrentICC5tRC≥ tRC(min)160150130mA2
-C1500
-L12005
Self Refresh CurrentICC6CKE ≤ 0.2V
NOTES:
1. Measured with outputs open.
2. Refresh period is 64ms.
3. Internal TCSR can be supported(In commercial Temp : Max 40°C/Max 70°C).
4. K4S51153LF-Y(P)C**
5. K4S51153LF-Y(P)L**
6. K4S51153LF-Y(P)F**
7. Unless otherwise noted, input swing IeveI is CMOS(VIH /VIL=VDDQ/VSSQ).
Internal TCSRMax 40Max 70°C3
Full Array9001200
-F
1/2 of Full Array800900
1/4 of Full Array700800
uA
uA6
4
5
September 2004
K4S51153LF - Y(P)C/L/F
Mobile SDRAM
AC OPERATING TEST CONDITIONS
ParameterValueUnit
AC input levels (Vih/Vil)0.9 x VDDQ / 0.2 V
Input timing measurement reference level0.5 x VDDQV
Input rise and fall timetr/tf = 1/1ns
Output timing measurement reference level0.5 x VDDQV
Output load conditionSee Figure 2
VDDQ
500Ω
Output
500Ω
VOH (DC) = V
VOL (DC) = 0.2V, IOL = 0.1mA
30pF
(VDD = 2.5V ± 0.2V, TA = -25 to 70°C )
DDQ - 0.2V, IOH = -0.1mA
Output
Vtt=0.5 x VDDQ
50Ω
Z0=50Ω
30pF
Figure 1. DC Output Load Circuit
Figure 2. AC Output Load Circuit
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September 2004
K4S51153LF - Y(P)C/L/F
OPERATING AC PARAMETER
(AC operating conditions unless otherwise noted)
Mobile SDRAM
ParameterSymbol
Row active to row active delaytRRD(min)151818ns1
RAS to CAS delaytRCD(min)181824ns1
Row precharge timetRP(min)181824ns1
Row active time
Row cycle timetRC(min)636884ns1
Last data in to row prechargetRDL(min)2CLK2
Last data in to Active delaytDAL(min)tRDL + tRP-3
Last data in to new col. address delaytCDL(min)1CLK2
Last data in to burst stoptBDL(min)1CLK2
Col. address to col. address delaytCCD(min)1CLK4
Number of valid output dataCAS latency=32
Number of valid output dataCAS latency=21
Number of valid output dataCAS latency=1
NOTES:
1. The minimum number of clock cycles is determined by dividing the minimum time required with clock cycle time
and then rounding off to the next higher integer.
2. Minimum delay is required to complete write.
3. Minimum tRDL=2CLK and tDAL(= tRDL + tRP) is required to complete both of last data write command(tRDL) and prech arge command(tRP).
4. All parts allow every cycle column address change.
5. In case of row precharge interrupt, auto precharge and read burst stop.
tRAS(min)455060ns1
tRAS(max)100us
-75-1H-1L
Version
UnitNote
ea5
0
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September 2004
K4S51153LF - Y(P)C/L/F
AC CHARACTERISTICS(AC operating conditions unless otherwise noted)
Mobile SDRAM
ParameterSymbol
CLK cycle timeCAS latency=3tCC7.5
CLK cycle timeCAS latency=2tCC9.09.012
CLK cycle timeCAS latency=1tCC--25
CLK to valid output delayCAS latency=3tSAC5.477
CLK to valid output delayCAS latency=2tSAC778
CLK to valid output delayCAS latency=1tSAC--20
Output data hold timeCAS latency=3tOH2.52.52.5
Output data hold timeCAS latency=2tOH2.52.52.5
Output data hold timeCAS latency=1tOH--2.5
CLK high pulse widthtCH2.53.03.0ns3
CLK low pulse widthtCL2.53.03.0ns3
Input setup timetSS2.02.52.5ns3
Input hold timetSH1.01.51.5ns3
CLK to output in Low-ZtSLZ111ns2
CAS latency=3
CLK to output in Hi-Z
CAS latency=2778
tSHZ
-75-1H-1L
MinMaxMinMaxMinMax
9.0
1000
5.477
1000
9.0
1000ns1
UnitNote
ns1,2
ns2
ns
CAS latency=1--20
NOTES :
1. Parameters depend on programmed CAS latency.
2. If clock rising time is longer than 1ns, (tr/2-0.5)ns should be added to the parameter.
3. Assumed input rise and fall time (tr & tf) = 1ns.
If tr & tf is longer than 1ns, transient time compensation should be considered,
i.e., [(tr + tf)/2-1]ns should be added to the parameter.
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September 2004
K4S51153LF - Y(P)C/L/F
Mobile SDRAM
SIMPLIFIED TRUTH TABLE
COMMANDCKEn-1 CKEn CS RAS CAS WE DQM BA0,1 A10/AP
RegisterMode Register SetHXLLLLXOP CODE1, 2
Auto Refresh
Refresh
Bank Active & Row Addr.HXLLHHXVRow Address
Read &
Column Address
Write &
Column Address
Burst StopHXLHHLXX6
Precharge
Clock Suspend or
Active Power Down
Precharge Power Down
Mode
DQMHXVX7
No Operation CommandHX
Self
Refresh
Auto Precharge Disable
Auto Precharge EnableH4, 5
Auto Precharge Disable
Auto Precharge EnableH4, 5
Bank Selection
All BanksXH
EntryL3
ExitLH
EntryHL
ExitLHXXXXX
EntryHL
ExitLH
H
HXLHLHXV
HXLHLLXV
HXLLHLX
H
LLLHXX
LHHH
HXXX3
HXXX
HXXX
LHHH
HXXX
LVVV
HXXX
LHHH
XX
VL
X
X
X
XX
A12,A11,
A9 ~ A0
LColumn
Address
(A0~A8)
LColumn
Address
(A0~A8)
X
XLVVV
X
Note
3
3
4
4
(V=Valid, X=Don′t Care, H=Logic High, L=Logic Low)
NOTES :
1. OP Code : Operand Code
A0 ~ A12 & BA0 ~ BA1 : Program keys. (@MRS)
2. MRS can be issued only at all banks precharge state.
A new command can be issued after 2 CLK cycles of MRS.
3. Auto refresh functions are the same as CBR refresh of DRAM.
The automatical precharge without row precharge command is meant by "Auto".
Auto/self refresh can be issued only at all banks precharge state.
Partial self refresh can be issued only after setting partial self refresh mode of EMRS.
4. BA0 ~ BA1 : Bank select addresses.
5. During burst read or write with auto precharge, new read/write command can not be issued.
Another bank read/write command can be issued after the end of burst.
New row active of the associated bank can be issued at tRP after the end of burst.
6. Burst stop command is valid at every burst length.
7. DQM sampled at the positive going edge of CLK masks the data-in at that same CLK in write operation (Write DQM latency
is 0), but in read operation, it makes the data-out Hi-Z state after 2 CLK cycles. (Read DQM latency is 2).
EMRS for PASR(Partial Array Self Ref.) & DS(Driver Strength)
Mode SelectDriver StrengthPASR
BA1BA0ModeA6A5Driver StrengthA2A1A0Size of Refreshed Array
00Normal MRS00Full000Full Array
01Reserved011/20011/2 of Full Array
10EMRS for Mobile SDRAM10Reserved0101/4 of Full Array
11Reserved11Reserved011Reserved
Reserved Address100Reserved
A12~A10/APA9A8A7A4A3101Reserved
000000
NOTES:
1. RFU(Reserved for future use) should stay "0" during MRS cycle.
2. If A9 is high during MRS cycle, "Burst Read Single Bit Write" function will be enabled.
3. Full Page Length x16 : 64Mb(256), 128Mb(512),256Mb(512),512Mb(1024)
110Reserved
111Reserved
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September 2004
K4S51153LF - Y(P)C/L/F
Mobile SDRAM
Partial Array Self Refresh
1. In order to save power consumption, Mobile SDRAM has PASR option.
2. Mobile SDRAM supports 3 kinds of PASR in self refresh mode : Full Array, 1/2 of Full Array and 1/4 of Full Array.
BA1=0
BA0=0
BA1=1
BA0=0
BA1=0
BA0=1
BA1=1
BA0=1
BA1=0
BA0=0
BA1=1
BA0=0
- Full Array- 1/2 Array
BA1=0
BA0=1
BA1=1
BA0=1
BA1=0
BA0=0
BA1=1
BA0=0
BA1=0
BA0=1
BA1=1
BA0=1
- 1/4 Array
Partial Self Refresh Area
Temperature Compensated Self Refresh
1. In order to save power consumption, Mobile-DRAM includes the internal temperature sensor and control units to control the self
refresh cycle automatically according to the two temperature range : Max 40 °C and Max 70 °C.
2. If the EMRS for external TCSR is issued by the controller, this EMRS code for TCSR is ignored.
Self Refresh Current (Icc6)
Temperature Range
Max 70 °C
Max 40 °C900800700
- C- L
Full Array1/2 of Full Array1/4 of Full Array
1200900800
15001200
- F
Unit
uA
B. POWER UP SEQUENCE
1. Apply power and attempt to maintain CKE at a high state and all other inputs may be undefined.
- Apply VDD before or at the same time as VDDQ.
2. Maintain stable power, stable clock and NOP input condition for a minimum of 200us.
3. Issue precharge commands for all banks of the devices.
4. Issue 2 or more auto-refresh commands.
5. Issue a mode register set command to initialize the mode register.
6. Issue a extended mode register set command to define DS or PASR operating type of the device after normal MRS.
EMRS cycle is not mandatory and the EMRS command needs to be issued only when DS or PASR is used.
The default state without EMRS command issued is full driver strength and full array refreshed.
The device is now ready for the operation selected by EMRS.
For operating with DS or PASR , set DS or PASR mode in EMRS setting stage.
In order to adjust another mode in the state of DS or PASR mode, additional EMRS set is required but power up sequence is not
needed again at this time. In that case, all banks have to be in idle state prior to adjusting EMRS set.