M39432 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

M39432

Single Chip 4 Mbit Flash Memory and 256 Kbit Parallel EEPROM

STMicroelectronics 

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M39432

Figure 8. Sector Protection Flowchart

START

SECTOR ADDRESS

on A16, A17, A18

EE = VIH

n=0

G, A9 = VID,

EF = VIL

Wait 4µs

W = VIL

Wait 100µs

W = VIH

G = VIH

Wait 4µs

Verify Sector

Protection Status1

DQ0 NO

=1

YES

A9 = VIH

PASS

++n NO

= 25

YES

A9 = VIH

FAIL

Note: 1. The Verify Sector Protection Status operation is specified in Table 9.

AI01948C

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