M29W160EB データシートの表示（PDF） - STMicroelectronics

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M29W160EB

16 Mbit (2Mb x8 or 1Mb x16, Boot Block) 3V Supply Flash Memory

STMicroelectronics 

Figure 17. Programmer Equipment Block Protect Flowchart

START

ADDRESS = BLOCK ADDRESS

W = VIH

n=0

G, A9 = VID,

E = VIL

Wait 4µs

W = VIL(1)

Wait 100µs

W = VIH

E, G = VIH,

A0, A6 = VIL,

A1 = VIH

E = VIL(1)

Wait 4µs

G = VIL

Wait 60ns

Read DATA

M29W160ET, M29W160EB

DATA NO

=

01h

YES

A9 = VIH

E, G = VIH

PASS

++n NO

= 25

YES

A9 = VIH

E, G = VIH

FAIL

AI03469b

Note: 1. Address Inputs A19-A12 give the address of the block that is to be protected. It is imperative that they remain stable during the

operation.

2. During the Protect and Verify phases of the algorithm, Chip Enable E must be kept Low, VIL.

35/40

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