M39832 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

M39832

Single Chip 8 Mbit (1Mb x8 or 512Kb x16) Flash and 256 Kbit Parallel EEPROM Memory

STMicroelectronics 

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Figure 8. Block Protection Flowchart

START

BLOCK ADDRESS

on A12 to A18

EE = VIH

n=0

G, A9 = VID,

EF = VIL

Wait 4µs

W = VIL

Wait 100µs

W = VIH

G = VIH

Wait 4µs

READ DQ0 at PROTECTION

ADDRESS: A0, A6 = VIL, A1 = VIH and

A12 to A18 DEFINING BLOCK

DQ0 NO

=1

YES

A9 = VIH

PASS

++n NO

= 25

YES

A9 = VIH

FAIL

AI00853

M39832

19/36

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