Am28F256A 27
SWITCHING WAVEFORMS
t
WC
DQ7#30h
t
RC
Data# Polling
Read
t
DF
t
OH
t
CE
t
OE
t
DS
t
CSE
t
WPH
t
DH
t
WP
t
GHWL
t
WHWH3 OR 4
Addresses
CE#
OE#
WE#
Data
V
CC
V
PP
Embedded
Erase Setup
Embedded
Erase
Erase Standby
30h
t
AH
t
AS
t
VCS
t
VPEL
DQ7#
18879C-19
Note:
DQ7# is the complement of the data written to the device.
Figure 10. AC Waveforms for Embedded Erase Operation