TIMING WAVE FORM OF WRITE CYCLE(4) (UB, LB Controlled)
tWC
ADD
tAW
tCW(3)
CS
tBW
UB, LB
tWR(5)
tAS(4)
WE
Data In
Data Out
NOTES (WRITE CYCLE)
1. All write cycle timing is referenced from the last valid address to the first transition address.
2. A write occurs during the overlap of a low CS,WE,LB and UB. A write begins at the latest transition CS going low and WE going low ; A write ends at
the earliest transition CS going high or WE going high. tWP is measured from the beginning of write to the end of write.
3. tCW is measured from the later of CS going low to end of write.
4. tAS is measured from the address valid to the beginning of write.
5. tWR is measured from the end of write to the address change. t WR applied in case a write ends as CS, or WE going high.
6. If OE. CS and WE are in the Read Mode during this period, the I/O pins are in the output low-Z state. Inputs of opposite phase of the output mus t not
be applied because bus contention can occur.
7. For common I/O applications, minimization or elimination of bus contention conditions is necessary during read and write cycl e.
8. If CS goes low simultaneously with WE going or after WE going low, the outputs remain high impedance state.
9. Dout is the read data of the new address.
10. When CS is low : I/O pins are in the output state. The input signals in the opposite phase leading to the output should not be applied.
High-Z
High-Z
tBLZ
tWHZ(6)
tWP(2)
tDWtDH
Data Valid
High-Z(8)
FUNCTIONAL DESCRIPTION
CSWEOELBUBMode
HXX*XXNot SelectHigh-ZHigh-ZISB, ISB1
LHHXX
LXXHH
LH
LHL
LLX
* NOTE : X means Don't Care.
HLHigh-ZDOUT
LLDOUTDOUT
LH
HLHigh-ZDIN
LLDINDIN
Output DisableHigh-ZHigh-ZICC
Read
Write
- 8 -
I/O1~I/O8I/O9~I/O16
DOUTHigh-Z
I/O Pin
DINHigh-Z
Supply Current
ICC
ICC
Rev 2.0
June -1997
Page 3
PRELIMINARY
KM6164002, KM6164002E, KM6164002ICMOS SRAM
TIMING WAVE FORM OF WRITE CYCLE(2) (OE=Low Fixed)
tWC
ADD
CS
UB, LB
tAS(4)
WE
Data In
Data Out
High-Z
TIMING WAVE FORM OF WRITE CYCLE(3) (CS=Controlled)
tAW
tWHZ(6)
tCW(3)
tBW
tWP1(2)
High-Z
tWR(5)
tDWtDH
Data Valid
tOW
tOH
(10)(9)
ADD
CS
UB, LB
WE
Data In
Data Out
High-Z
High-Z
tAS(4)
tLZ
tAW
tWHZ(6)
tWC
tCW(3)
tBW
tWP(2)
tDW
Data Valid
tWR(5)
tDH
High-Z(8)
- 7 -
Rev 2.0
June -1997
Page 4
PRELIMINARY
KM6164002, KM6164002E, KM6164002ICMOS SRAM
TIMING WAVE FORM OF READ CYCLE(2) (WE=VIH)
tRC
ADD
tAA
tCO
CS
tBA
UB, LB
tBLZ(4,5)
tOE
OE
tOLZ
tLZ(4,5)
Data Out
NOTES (READ CYCLE)
1. WE is high for read cycle.
2. All read cycle timing is referenced from the last valid address to the first transition address.
3. tHZ and tOHZ are defined as the time at which the outputs achieve the open circuit condition and are not referenced to V OH or VOL Levels.
4. At any given temperature and voltage condition, t HZ(Max.) is less than tLZ (Min.) both for a given device and from device to device.
5. Transition is measured ±200§Æ from steady state voltage with Load(B). This parameter is sampled and not 100% tested.
6. Device is continuously selected with CS=VIL.
7. Address valid prior to coincident with CS transition low.
8. For common I/O applications, minimization or elimination of bus contention conditions is necessary during read and write cycl e.
Data Valid
tHZ(3,4,5)
tBHZ(3,4,5)
tOHZ
tOH
TIMING WAVE FORM OF WRITE CYCLE(1) (OE=Clock)
ADD
OE
CS
UB, LB
tAS(4)
WE
Data In
Data Out
High-Z
tOHZ(6)
tAW
tWC
tCW(3)
tBW
tWP(2)
High-Z(8)
tDW
Data Valid
tWR(5)
tDH
- 6 -
Rev 2.0
June -1997
Page 5
PRELIMINARY
KM6164002, KM6164002E, KM6164002ICMOS SRAM
WRITE CYCLE
ParameterSymbol
Write Cycle TimetWC20-25Chip Select to End of WritetCW15-17-§À
Address Set-up TimetAS0-0-§À
Address Valid to End of WritetAW15-17-§À
Write Pulse Width(OE High)tWP15-17-§À
Write Pulse Width(OE Low) tWP120-25UB, LB Valid to End of WritetBW15-17-ns
Write Recovery TimetWR0-0-§À
Write to Output High-Z
Data to Write Time OverlaptDW10-12-§À
Data Hold from Write TimetDH0-0End Write to Output Low-ZtOW3-4-
tWHZ
KM6164002-20KM6164002-25
MinMaxMinMax
0808§À
Unit
§À
§À
§À
§À
NOTE: Above parameters are also guaranteed at extended and industrial temperature ranges.
TIMING DIAGRAMS
TIMING WAVE FORM OF READ CYCLE(1) (Address Controlled, CS=OE=UB=LB=VIL, WE=VIH)
tRC
ADD
tAA
tOH
Data Out
Previous Data ValidData Valid
- 5 -
Rev 2.0
June -1997
Page 6
PRELIMINARY
KM6164002, KM6164002E, KM6164002ICMOS SRAM
AC CHARACTERISTICS(TA=0 to 70°C, VCC=5.0V±10%, unless otherwise noted.)
TEST CONDITIONS
ParameterValue
Input Pulse Levels0V to 3V
Input Rise and Fall Times
Input and Output timing Reference Levels1.5V
Output LoadsSee below
NOTE: Above test conditions are also applied at extended and industrial temperature ranges .
Output Loads(A)Output Loads(B)
for tHZ, tLZ, tWHZ, tOW, tOLZ & tOHZ
+5.0V
§À
3
+5.0V
480Ω
5pF*
DOUT
255Ω
480Ω
30pF*
DOUT
255Ω
* Including Scope and Jig Capacitance
READ CYCLE
ParameterSymbol
Read Cycle TimetRC20-25Address Access TimetAA-20-25
Chip Select to OutputtCO-20-25
Output Enable to Valid OutputtOE-10-12§À
UB, LB Access TimetBA-10-12ns
Chip Enable to Low-Z Output
Output Enable to Low-Z Output tOLZ0-0-
UB, LB Enable to Low-Z Output
tLZ5-5-
tBLZ0-0-ns
KM6164002-20KM6164002-25
MinMaxMinMax
Unit
§À
§À
§À
§À
§À
Chip Disable to High-Z OutputtHZ0708§À
Output Disable to High-Z Output
UB, LB Disable to High-Z Output
Output Hold from Address ChangetOH4-5-
NOTE: Above parameters are also guaranteed at extended and industrial temperature ranges.
tOHZ
tBHZ0708ns
0708§À
- 4 -
Rev 2.0
June -1997
§À
Page 7
PRELIMINARY
KM6164002, KM6164002E, KM6164002ICMOS SRAM
ABSOLUTE MAXIMUM RATINGS*
ParameterSymbolRatingUnit
Voltage on Any Pin Relative to VSSVIN,VOUT-0.5 to 7.0V
Voltage on VCC Supply Relative to VSSVCC-0.5 to 7.0V
Power DissipationPD1.0
Storage TemperatureTSTG-65 to 150°C
Commercial
Operating Temperature
* Stresses greater than those listed under "Absolute Maximum Rating" may cause permanent damage to the device. This is a stress ra ting only and func-
tional operation of the device at these at these or any other conditions above those indicated in the operating sections of this specification is not implied.
Exposure to absolute maximum rating conditions for extended periods may affect reliability.
The KM6164002 is a 4,194,304-bit high-speed Static Random
Access Memory organized as 262,144 words by 16 bits. The
KM6164002 uses 16 common input and output lines and has an
output enable pin which operates faster than address access
time at read cycle. Also it allows that lower and upper byte
access by data byte control (UB, LB). The device is fabricated
using SAMSUNG's advanced CMOS process and designed for
high-speed circuit technology. It is particularly well suited for use
in high-density high-speed system applications. The
KM6164002 is packaged in a 400mil 44-pin plastic SOJ.
64Kx16 Bit High Speed Static RAM(5V Operating), Revolutionary Pin out.
Operated at Commercial, Extended and Industrial Temperature Range.
Revision History
Rev No.
Rev. 0.0
Rev. 1.0
Rev. 2.0
History
Initial release with Preliminary.
Release to final Data Sheet.
1.1. Delete Preliminary
2.1.Delete Low power product with Data Retention Mode.
2.1.1. Delete Data Retention Characteristics
2.2.Add Industrial and Extended Temperature Range parts with the
same parameters as Commercial Temperature Range parts.
2.2.1 Add KM6164002I for Industrial Temperature Range.
2.2.2.Add KM6164002E for Extended Temperature Range.
2.2.3.Add ordering information.
2.2.4. Add the condition for operating at Industrial and Extended
Temperature Range.
2.3.Add timing diagram to define tWP1 as ″(Timing Wave Form of
Write Cycle(OE=Low fixed)″
2.4.Delete 35ns part.
Draft Data
Jun. 1th, 1991
Oct. 4th, 1993
Jun. 17th, 1997
Remark
Preliminary
Final
Final
The attached data sheets are prepared and approved by SAMSUNG Electronics. SAMSUNG Electronics CO., LTD. reserve the right
to change the specifications. SAMSUNG Electronics will evaluate and reply to your requests and questions on the parameters of this
device. If you have any questions, please contact the SAMSUNG branch office near your office, call or contact Headquarters.
- 1 -
Rev 2.0
June -1997
Loading...
+ hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.