am42bds640ag Meet Spansion Inc., am42bds640ag Datasheet - Page 54

• Manufacturer Part Number: am42bds640ag
• Description: 64 Megabit 4 M ? 16-bit Cmos 1.8 Volt-only, Simultaneous Operation, Burst Mode Flash Memory And 16 Mbit 1 M ? 16-bit Static Ram Preliminary
• Manufacturer: Meet Spansion Inc.

AC CHARACTERISTICS
Notes:
1. PA = Program Address, PD = Program Data, VA = Valid
2. “In progress” and “complete” refer to status of program
3. A21–A12 are don’t care during command sequence
4. Addresses are latched on the first of either the rising edge
November 1, 2002
Addresses
Address for reading status bits.
operation.
unlock cycles.
of AVD# or the active edge of CLK.
AVD#
CLK
CE#f
WE#
Data
OE#
V
CC
t
t
ACS
AS
555h
t
VCS
t
t
t
AH
AHW
CAS
Program Command Sequence (last two cycles)
Figure 23. Synchronous Program Operation Timings
t
WP
t
AVDP
A0h
t
ACH
t
WC
t
WPH
P R E L I M I N A R Y
PA
Am42BDS640AG
t
t
DH
DS
PD
5. Either CS# or AVD# is required to go from low to high in
6. The Synchronous programming operation is independent
7. CLK must not have an active edge while WE# is at V
8. AVD# must toggle during command sequence unlock cy-
t
CH
between programming command sequences.
of the Set Device Read Mode bit in the Burst Mode
Configuration Register.
cles.
VA
t
WHWH1
Progress
Read Status Data
In
VA
Complete
IL
53
.