8Mb: 512K x 18, 256K x 32/36
PIPELINED ZBT SRAM
FBGA PIN DESCRIPTIONS (CONTINUED)
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.
(a) 10J, 10K, (a) 10J, 10K,
10L, 10M, 11D 10L, 10M, 11J,
11E, 11F, 11G 11K, 11L, 11M
(b) 2D, 2E, 2F, (b) 10D, 10E,
2G, 1J, 1K, 10F, 10G, 11D,
1L, 1M 11E, 11F, 11G
(c) 1D, 1E, 1F,
1G, 2D, 2E,
2F, 2G,
(d) 1J, 1K, 1L,
1M, 2J, 2K,
2L, 2M
DQa
DQb
DQc
DQd
Input/ SRAM Data I/Os: For the x18 version, Byte “a” is associated with
Output DQa’s; Byte “b” is associated with DQb’s. For the x32 and x36
versions, Byte “a” is associated with DQa’s; Byte “b” is associated
with DQb’s; Byte “c” is associated with DQc’s; Byte “d” is associated
with DQd’s. Input data must meet setup and hold times around the
rising edge of CLK.
11C
11N
NF/DQPa NF/ No Function/Parity Data I/Os: On the x32 version, these are No
1N
11C
NF/DQPb I/O Function(NF). On the x18 version, Byte “a” parity is DQPa; Byte “b”
–
1C
NF/DQPc
parity is DQPb. On the x36 version, Byte “a” parity is DQPa; Byte
–
1N
NF/DQPd
“b” parity is DQPb; Byte “c” parity is DQPc; Byte “d” parity is DQPd.
1H, 2H, 4D, 1H, 2H, 4D,
VDD
4E, 4F, 4G, 4H, 4E, 4F, 4G, 4H,
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
Supply Power Supply: See DC Electrical Characteristics and Operating
Conditions for range.
3C, 3D, 3E, 3F, 3C, 3D, 3E, 3F,
3G, 3J, 3K, 3L, 3G, 3J, 3K, 3L,
3M, 3N, 9C, 3M, 3N, 9C,
9D, 9E, 9F, 9D, 9E, 9F,
9G, 9J, 9K, 9G, 9J, 9K,
9L, 9M, 9N 9L, 9M, 9N
VDDQ
Supply Isolated Output Buffer Supply: See DC Electrical Characteristics and
Operating Conditions for range.
(continued on next page)
8Mb: 512K x 18, 256K x 32/36 Pipelined ZBT SRAM
MT55L512L18P_2.p65 – Rev. 6/01
10
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©2001, Micron Technology, Inc.