MX29F8100 Просмотр технического описания (PDF) - Macronix International

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Компоненты Описание

производитель

MX29F8100

8M-BIT [1M x 8/512K x 16] CMOS SINGLE VOLTAGE FLASH MEMORY

Macronix International 

Figure 11. SECTOR UNPROTECT ALGORITHM

START,

PLSCNT=0

Write Data AAH Address 5555H

Write Data 55H Address 2AAAH

Write Data 60H Address 5555H

Write Data AAH Address 5555H

Write Data 55H Address 2AAAH

Write Data 40H, Sector Address*

Read Status Register

NO

SR7 = 1

?

YES

Unprotect Sector

Operation Terminated

To

YES

Verify Protect

Status ?

NO

Device Stays at

Read S.R. Mode

Verify Protect Status Flow

(Figure 12)

NOTE :

*Only the Top or the Bottom Sector Address is vaild in this feature.

i.e. Sector Address = (A18,A17,A16) = 000B or 111B

INDEX

MX29F8100

Increment PLSCNT,

To Unprotect Sector Again

NO

PLSCNT

= 25 ?

NO

Data

= 00H ?

YES

Device Failed

YES

Sector Unprotected,Operation

Done, Device Stays at

Verify Sector Protect Mode

P/N: PM0262

REV. 2.0, JAN. 22, 1999

30

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