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M12S128168A_08 Datasheet, PDF (7/45 Pages) Elite Semiconductor Memory Technology Inc. – 2M x 16 Bit x 4 Banks Synchronous DRAM
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ESMT
M12S128168A
Parameter
Symbol
-6
Col. address to col. address delay tCCD(min)
Number of valid
Output data
CAS latency = 3
CAS latency = 2
Version
-7
1
2
1
Unit
Note
-10
tCK
3
ea
4
Note : 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. All parts allow every cycle column address change.
4. In case of row precharge interrupt, auto precharge and read burst stop.
5. A new command may be given tRFC after self refresh exit.
6. A maximum of eight consecutive AUTO REFRESH commands (with tRFCmin) can be posted to any given SDRAM, and the
maximum absolute interval between any AUTO REFRESH command and the next AUTO REFRESH command is
8x15.6 μ s.)
AC CHARACTERISTICS (AC operating condition unless otherwise noted)
Parameter
Symbol
CLK cycle time
CAS latency = 3
tCC
CAS latency = 2
CLK to valid
output delay
CAS latency = 3
tSAC
CAS latency = 2
Output data
hold time
CAS latency = 3
tOH
CAS latency = 2
CLK high pulsh width
tCH
CLK low pulsh width
tCL
Input setup time
tSS
Input hold time
tSH
CLK to output in Low-Z
tSLZ
CLK to output
in Hi-Z
CAS latency = 3
tSHZ
CAS latency = 2
-6
MIN MAX
6
1000
10
-
5.4
-
6
2.5
-
2.5
-
2.5
-
2.5
-
1.5
-
1
-
1
-
-
5.4
-
6
-7
MIN
MAX
7
100
10
-
5.4
-
6
2.5
-
2.5
-
2.5
-
2.5
-
1.5
-
1
-
1
-
-
5.4
-
6
Note :
1. Parameters depend on programmed CAS latency.
2. If clock rising time is longer than 1ns. (tr/2 - 0.5) ns should be considered.
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.
-10
Unit
MIN MAX
10 1000 ns
12
-
7
ns
-
8
2.5
-
ns
2.5
-
3
-
ns
3
-
ns
2.5
-
ns
1.5
-
ns
1
-
ns
-
7
ns
-
8
Note
1
1,2
2
3
3
3
3
2
-
Elite Semiconductor Memory Technology Inc.
Publication Date: Apr. 2008
Revision: 1.1
7/45
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