AM28F020A-120EC AMD [Advanced Micro Devices], AM28F020A-120EC Datasheet - Page 27

• Manufacturer Part Number: AM28F020A-120EC
• Description: 2 Megabit (256 K x 8-Bit) CMOS 12.0 Volt, Bulk Erase Flash Memory with Embedded Algorithms
• Manufacturer: AMD [Advanced Micro Devices]

SWITCHING WAVEFORMS
Note:
DQ7 # is the complement of the data written to the device.
Addresses
WE#
Data
OE#
CE#
V
V
CC
PP
t
t
GHWL
VCS
t
CSE
Erase Setup
Embedded
t
Figure 10. AC Waveforms for Embedded Erase Operation
WC
t
VPEL
t
WP
t
DS
30h
t
WPH
Embedded
Erase
t
AS
t
DH
t
AH
30h
Am28F020A
Erase
t
WHWH3 OR 4
DQ7#
Data# Polling
DQ7#
Standby
t
OE
Read
t
CE
t
RC
t
OH
17502D-19
t
DF
27