10

8Mb: 512K x 18, 256K x 32/36 Pipelined ZBT SRAM

Micron Technology, Inc., reserves the right to change products or specifications without notice.

MT55L512L18P_2.p65 – Rev. 6/01

©2001, Micron Technology, Inc.

8Mb: 512K x 18, 256K x 32/36

PIPELINED ZBT SRAM

x18

x32/x36

SYMBOL

TYPE

DESCRIPTION

8B

8B

OE#

Input

Output Enable: This active LOW, asynchronous input enables the

(G#)

data I/O output drivers.

8A

8A

ADV/LD#

Input

Synchronous Address Advance/Load: When HIGH, this input is used

to advance the internal burst counter, controlling burst access after

the external address is loaded. When ADV/LD# is HIGH, R/W# is

ignored. A LOW on ADV/LD# clocks a new address at the CLK rising

edge.

1R

1R

MODE

Input

Mode: This input selects the burst sequence. A LOW on this input

(LBO#)

selects “linear burst.” NC or HIGH on this input selects “interleaved

burst.” Do not alter input state while device is operating.

DQa

Input/ SRAM Data I/Os: For the x18 version, Byte “a” is associated with

10L, 10M, 11D 10L, 10M, 11J,

Output DQa’s; Byte “b” is associated with DQb’s. For the x32 and x36

11E, 11F, 11G 11K, 11L, 11M

versions, Byte “a” is associated with DQa’s; Byte “b” is associated

DQb

with DQb’s; Byte “c” is associated with DQc’s; Byte “d” is associated

2G, 1J, 1K,

10F, 10G, 11D,

with DQd’s. Input data must meet setup and hold times around the

1L, 1M

11E, 11F, 11G

rising edge of CLK.

DQc

1G, 2D, 2E,

2F, 2G,

DQd

1M, 2J, 2K,

2L, 2M

11C

11N

NF/

No Function/Parity Data I/Os: On the x32 version, these are No

1N

11C

I/O

Function(NF). On the x18 version, Byte “a” parity is DQPa; Byte “b”

–

1C

parity is DQPb. On the x36 version, Byte “a” parity is DQPa; Byte

–

1N

“b” parity is DQPb; Byte “c” parity is DQPc; Byte “d” parity is DQPd.

1H, 2H, 4D,

1H, 2H, 4D,

Supply Power Supply: See DC Electrical Characteristics and Operating

4E, 4F, 4G, 4H, 4E, 4F, 4G, 4H,

Conditions for range.

4J, 4K, 4L, 4M, 4J, 4K, 4L, 4M,

7N, 8D, 8E, 8F, 7N, 8D, 8E, 8F,

8G,8H, 8J,

8G,8H, 8J,

8K, 8L, 8M

8K, 8L, 8M

3C, 3D, 3E, 3F, 3C, 3D, 3E, 3F,

Supply Isolated Output Buffer Supply: See DC Electrical Characteristics and

3G, 3J, 3K, 3L, 3G, 3J, 3K, 3L,

Operating Conditions for range.

3M, 3N, 9C,

3M, 3N, 9C,

9D, 9E, 9F,

9D, 9E, 9F,

9G, 9J, 9K,

9G, 9J, 9K,

9L, 9M, 9N

9L, 9M, 9N

FBGA PIN DESCRIPTIONS (CONTINUED)

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