am42bds640ag Meet Spansion Inc., am42bds640ag Datasheet - Page 55

• 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
5. Either CS# or AVD# is required to go from low to high in
54
Address for reading status bits.
operation.
unlock cycles.
of AVD# or the active edge of CLK.
between programming command sequences.
Addresses
AVD#
CLK
CE#f
WE#
Data
OE#
V
CC
t
ACS
555h
t
AS
t
Figure 24. Alternate Synchronous Program Operation Timings
VCS
t
CAS
t
AH
t
CSW2
t
AVCH
Program Command Sequence (last two cycles)
t
WP
t
AVDP
t
A0h
ACH
(Note 8)
t
WC
P R E L I M I N A R Y
t
WPH
PA
Am42BDS640AG
t
t
DH
DS
PD
6. The Synchronous programming operation is independent
7. AVD# must toggle during command sequence unlock cy-
8. t
9. CLK must not have an active edge while WE# is at V
of the Set Device Read Mode bit in the Burst Mode
Configuration Register.
cles.
AH
t
CH
= 45 ns.
VA
t
WHWH1
Progress
Read Status Data
In
November 1, 2002
VA
Complete
IL
.