AC Waveforms Chip/Sector
Erase Operations for Flash Memory
Data Polling
5555H
tAH
5555H
2AAAH
5555H
2AAAH
SA
Addresses
tAS
FCE
OE
tGHWL
tWP
FWE
tWPH
tDH
tCE
AAH
55H
80H
AAH
55H
10H/30H
Data
VCC
tDS
tVCE
Notes:
1. SA is the sector address for sector erase.
AC Waveforms for Data Polling
During Embedded Algorithm Operations for Flash Memory
tCH
FCE
tDF
tOE
OE
tOEH
tCE
FWE
tOH
*
High Z
DQ7=
Valid Data
DQ7
DQ7
tWHWH1 or 2
DQ0–DQ6
Valid Data
DQ0-DQ6
DQ0–DQ6=Invalid
tOE
* DQ7=Valid Data (The device has completed the Embedded operation).
7
Aeroflex Circuit Technology
SCD1663 REV A 4/28/98 Plainview NY (516) 694-6700