A29DL323UV-90(2002) Ver la hoja de datos (PDF) - AMIC Technology

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A29DL323UV-90
(Rev.:2002)

32M-Bit CMOS Low Voltage Dual Operation Flash Memory 4M-Byte by 8-Bit (Byte Mode) / 2M-Word by 16-Bit (Word Mode)

AMIC Technology 

START

RESET=V ID

Wait 4 us

Temporary Sector Group

Unprotect Mode

No

Protect Sector Group?

Yes

Sector Group

Protection (Unprotect) Mode

Address=Don't care

Data=60H

Pulse Count=1

Sector Group Protection

(A6, A1, A0)=(V IL, VIH, VIL),

Address=SGA, Data=60H

Increment Pulse Count

Timeout 250us

Verify Sector Group Protection

(A6, A1, A0)=(V IL, VIH, VIL),

Address=SGA, Data=40H

A29L323 Series

No

Data=01H?

Yes

Remove VID from RESET,

Write Reset Command

Fail

Read from Sector Group Address

(A6, A1, A0)=(V IL, VIH, VIL),

Address=SGA

No

Data=01H?

Yes

Protect Other

Sector Group?

No

Remove V ID from RESET,

Write Reset Command

Yes

Next Sector Group Address

Sector Group Protect Complete

Figure 1. Sector Group Protection Flow Chart

PRELIMINARY (May, 2002, Version 0.0)

17

AMIC Technology, Inc.

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