am49dl640bg Meet Spansion Inc., am49dl640bg Datasheet - Page 56

• Manufacturer Part Number: am49dl640bg
• Description: 64 Mbit 8 M ? 8-bit/4 M ? 16-bit Cmos And 32 Mbit 512k ? 16-bit Pseudo Static Ram Preliminary
• Manufacturer: Meet Spansion Inc.

pSRAM AC CHARACTERISTICS
Notes:
1. If the device is using the I/Os to output data, input signals of reverse polarity must not be applied.
2. If OE# is high during the write cycle, the outputs will remain at high impedance.
March 8, 2002
Addresses
A0 to A20
I/O1 to 16
I/O1 to 16
LB#, UB#
CE#1
D
WE#
CE2
OUT
D
IN
High-Z
t
CH
Figure 31. Pseudo SRAM Write Cycle—CE1#s Control
t
(Note 1)
AS
P R E L I M I N A R Y
t
COE
t
BE
Am49DL640BG
t
t
WC
ODW
t
CW
t
BW
t
WP
Valid Data In
t
DS
t
DH
t
WR
High-Z
(Note 1)
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