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IS61QDB42M36 Datasheet, PDF (3/28 Pages) Integrated Silicon Solution, Inc – 72 Mb (2M x 36 & 4M x 18) QUAD (Burst of 4) Synchronous SRAMs | |||
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72 Mb (2M x 36 & 4M x 18)
QUAD (Burst of 4) Synchronous SRAMs
Pin Description
Symbol
Pin Number
Description
K, K
C, C
CQ, CQ
Doff
SA
6B, 6A
6P, 6R
Input clock.
Input clock for output data control.
11A, 1A
1H
Output echo clock.
DLL disable when low.
3A, 9A, 4B, 8B, 5C, 7C, 5N, 6N, 7N, 4P, 5P, 7P, 8P, 3R, 4R, 5R,
7R, 8R, 9R
2M x 36 address inputs.
SA
10A, 3A, 9A, 4B, 8B, 5C, 7C, 5N, 6N, 7N, 4P, 5P, 7P, 8P, 3R, 4R,
5R, 7R, 8R, 9R
4M x 18 address inputs.
D0âD8
D9âD17
D18âD26
D27âD35
10P, 11N, 11M, 10K, 11J, 11G, 10E, 11D, 11C
10N, 9M, 9L, 9J, 10G, 9F, 10D, 9C, 9B
3B, 3C, 2D, 3F, 2G, 3J, 3L, 3M, 2N
1C, 1D, 2E, 1G, 1J, 2K, 1M, 1N, 2P
2M x 36 data inputs.
Q0âQ8
Q9âQ17
Q18âQ26
Q27âQ35
11P, 10M, 11L, 11K, 10J, 11F, 11E, 10C, 11B
9P, 9N, 10L, 9K, 9G, 10F, 9E, 9D, 10B
2B, 3D, 3E, 2F, 3G, 3K, 2L, 3N, 3P
1B, 2C, 1E, 1F, 2J, 1K, 1L, 2M, 1P
2M x 36 data outputs.
D0âD8
D9âD17
10P, 11N, 11M, 10K, 11J, 11G, 10E, 11D, 11C
3B, 3C, 2D, 3F, 2G, 3J, 3L, 3M, 2N
4M x 18 data inputs.
Q0âQ8
Q9âQ17
11P, 10M, 11L, 11K, 10J, 11F, 11E, 10C, 11B
2B, 3D, 3E, 2F, 3G, 3K, 2L, 3N, 3P
4M x 18 data outputs.
W
4A
Write control, active low.
R
8A
Read control, active low.
BW0, BW1, BW2, BW3 7B, 7A, 5A,5B
BW0, BW1
7B, 5A
VREF
2H, 10H
VDD
5F, 7F, 5G, 7G, 5H, 7H, 5J, 7J, 5K, 7K
VDDQ
4E,8E,4F,8F,4G,8G,3H,4H,8H,9H,4J,8J,4K,8K,4L,8L
VSS
4C, 8C, 4D, 5D, 6D, 7D, 8D, 5E, 6E, 7E, 6F, 6G, 6H, 6J,
6K, 5L, 6L, 7L, 4M, 5M, 6M, 7M, 8M, 4N, 8N
2M x 36 byte write control, active low.
4M x 18 byte write control, active low.
Input reference level.
Power supply.
Output power supply.
Ground.
ZQ
11H
Output driver impedance control.
TMS, TDI, TCK
10R, 11R, 2R
IEEE 1149.1 test inputs (1.8V LVTTL lev-
els).
TDO
1R
IEEE 1149.1 test output (1.8V LVTTL level).
NC for x36
NC for x18
2A, 10A, 6C
2A, 7A, 1B, 5B, 9B, 10B, 1C, 2C, 6C, 9C, 1D, 9D, 10D, 1E, 2E,
9E, 1F, 9F, 10F, 1G, 9G, 10G, 1J, 2J, 9J, 1K, 2K, 9K, 1L, 9L,
10L, 1M, 2M, 9M, 1N, 9N, 10N, 1P, 2P, 9P
Integrated Silicon Solution, Inc.
3
Rev. B
11/10/09
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