ACT-F128K32 Просмотр технического описания (PDF) - Aeroflex Corporation

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ACT-F128K32

High Speed 4 Megabit FLASH Multichip Module

Aeroflex Corporation 

Figure 4

Erase Algorithm

Bus

Operations

Standby

Write

Read

Standby

Command

Sequence

Comments

Erase

Data Polling to Verify Erasure

Compare Output to FFH

Start

Write Erase Command Sequence

(See Below)

Data Poll or Toggle Bit

Successfully Completed

Erasure Completed

Chip Erase Command Sequence

(Address/Command)

5555H/AAH

Individual Sector/Multiple Sector

Erase Command Sequence

(Address/Command)

5555H/AAH

2AAAH/55H

2AAAH/55H

5555H/80H

5555H/80H

5555H/AAH

5555H/AAH

2AAAH/55H

2AAAH/55H

5555H/10H

Sector Address/30H

Additional Sector

Erase Commands

are Optional

Sector Address/30H

Sector Address/30H

Note 1. To Ensure the command has been accepted, the system software should check the

status of D3 prior to and following each subsequent sector erase command. If D3 were high on

the second status check, the command may not have been accepted.

Aeroflex Circuit Technology

11

SCD1667 REV A 4/28/97 Plainview NY (516) 694-6700

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