am49dl640bg Meet Spansion Inc., am49dl640bg Datasheet - Page 54

• 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. t
2. If CE#, LB#, or UB# goes low at the same time or before
March 8, 2002
the outputs achieve the open circuit condition and are
not referenced to output voltage levels.
WE# goes high, the outputs will remain at high impedance.
OD,
t
ODo
Addresses
Addresses
A3 to A20
I/O1 to 16
LB#, UB#
A0 to A2
, t
CE#1
BD
D
WE#
OE#
CE2
OUT
, and t
ODW
are defined as the time at which
t
t
ACC
COE
t
BE
t
t
RC
CO
t
BA
t
OE
Figure 29. Page Read Timing
t
OEE
P R E L I M I N A R Y
D
OUT
Am49DL640BG
t
AOH
t
AA
t
t
PM
PC
3. If CE#, LB#, or UB# goes low at the same time or after WE#
D
OUT
goes low, the outputs will remain at high impedance.
t
AOH
Maximum 8 words
t
AA
t
PC
D
OUT
t
AOH
t
AA
t
PC
D
OUT
t
OH
t
t
BD
ODO
t
OD
Fixed High
53