MM29F400T-55N6R View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

MM29F400T-55N6R

4 Mbit (512Kb x8 or 256Kb x16, Boot Block)Single Supply Flash Memory

STMicroelectronics 

Prev 21 22 23 24 25 26 27 28 29 30 Next

Figure 15. All Blocks Unprotecting Flowchart

M29F400T, M29F400B

START

PROTECT

ALL BLOCKS

n=0

W = VIH

E, G, A9 = VID

A12, A15 = VIH

Wait 4µs

W = VIL

Wait 10ms

W = VIH

E, G = VIH

Set-up

Unprotect

Verify

E, A0 = VIL; A1, A6 = VIH; A9 = VID

A12-A17 IDENTIFY BLOCK

Wait 4µs

G = VIL

Wait 60ns

VERIFY BLOCK

PROTECT STATUS

NEXT

BLOCK

NO ++n

= 1000

YES

A9 = VIH

FAIL

NO DATA YES

=

00h

LAST NO

BLK.

YES

A9 = VIH

PASS

AI01876C

29/34

Share Link: