AM29F800BB-55EF Spansion Inc., AM29F800BB-55EF Datasheet - Page 20

• Manufacturer Part Number: AM29F800BB-55EF
• Description: IC, FLASH, 8MBIT, 55NS, TSOP-48
• Manufacturer: Spansion Inc.

Specifications of AM29F800BB-55EF

• Memory Type: Flash
• Memory Size: 8Mbit
• Memory Configuration: 1M X 8 / 512K X 16
• Access Time: 55ns
• Supply Voltage Range: 4.5V To 5.5V
• Memory Case Style: TSOP
• No. Of Pins: 48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

EMBEDDED ALGORITHMS
Note:
1. To insure the command has been accepted, the system software should check the status of DQ3 prior to and following each
20
subsequent sector erase command. If DQ3 were high on the second status check, the command may not have been ac-
cepted.
Chip Erase Command Sequence
(Address/Command):
555H/AAH
2AAH/55H
555H/AAH
2AAH/55H
555H/80H
555H/10H
Figure 2. Embedded Erase Algorithm
Write Erase Command Sequence
P R E L I M I N A R Y
Data Polling or Toggle Bit
Successfully Completed
Am29F800T/Am29F800B
Erasure Completed
(see below)
Start
Individual Sector/Multiple Sector
Erase Command Sequence
(Address/Command):
Sector Address/30H
Sector Address/30H
Sector Address/30H
555H/AAH
555H/AAH
2AAH/55H
2AAH/55H
555H/80H
Additional sector
erase commands
are optional
20375C-7
8/18/97