AM29F040B-1 Advanced Micro Devices, AM29F040B-1 Datasheet - Page 22

• Manufacturer Part Number: AM29F040B-1
• Description: 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only/ Uniform Sector Flash Memory
• Manufacturer: Advanced Micro Devices

Note:
SA = Sector Address. VA = Valid Address for reading status data.
22
Note: PA = program address, PD = program data, D
Addresses
Addresses
WE#
Data
OE#
CE#
V
WE#
Data
OE#
CE#
CC
V
CC
t
t
VCS
VCS
Program Command Sequence (last two cycles)
t
Erase Command Sequence (last two cycles)
t
555h
t
CS
GHWL
CS
t
2AAh
t
WC
GHWL
t
WC
Figure 10. Chip/Sector Erase Operation Timings
t
WP
t
DS
t
WP
t
55h
Figure 9. Program Operation Timings
DS
A0h
t
t
DH
CH
t
DH
t
CH
P R E L I M I N A R Y
555h for chip erase
t
WPH
t
WPH
OUT
t
AS
PA
t
AS
Am29F040B
SA
is the true data at the program address.
10 for Chip Erase
t
AH
PD
t
AH
30h
t
WHWH1
Read Status Data (last two cycles)
t
PA
WHWH2
Read Status Data
Status
VA
Progress
In
D
OUT
PA
VA
Complete
21445B-14
21445B-15