MB89628R datasheet(13/44 Pages) FUJITSU

13 / 44 page

MB89628R/629R/P629

7. Setting OTPROM Options

The programming procedure is the same as that for the PROM. Options can be set by programming values at

the addresses shown on the memory map. The relationship between bits and options is shown on the following

bit map:

• OTPROM option bit map

Notes: • Set each bit to 1 to erase.

• Do not write 0 to the vacant bit.

The read value of the vacant bit is 1, unless 0 is written to it.

• Always write 0 to the reserved bit.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

8000H

(0000H)

Vacancy

Readable and

writable

Vacancy

Readable and

writable

Vacancy

Readable and

writable

Oscillation

stabilization time

1: Crystal

0: Ceramic

Reset pin

output

1: Yes

2: No

Power-on

reset

1: Yes

0: No

Vacancy

Readable and

writable

Vacancy

Readable and

writable

8001H

(0001H)

P07

Pull-up

1: No

0: Yes

P06

Pull-up

1: No

0: Yes

P05

Pull-up

1: No

0: Yes

P04

Pull-up

1: No

0: Yes

P03

Pull-up

1: No

0: Yes

P02

Pull-up

1: No

0: Yes

P01

Pull-up

1: No

0: Yes

P00

Pull-up

1: No

0: Yes

8002H

(0002H)

P17

Pull-up

1: No

0: Yes

P16

Pull-up

1: No

0: Yes

P15

Pull-up

1: No

0: Yes

P14

Pull-up

1: No

0: Yes

P13

Pull-up

1: No

0: Yes

P12

Pull-up

1: No

0: Yes

P11

Pull-up

1: No

0: Yes

P10

Pull-up

1: No

0: Yes

8003H

(0003H)

P37

Pull-up

1: No

0: Yes

P36

Pull-up

1: No

0: Yes

P35

Pull-up

1: No

0: Yes

P34

Pull-up

1: No

0: Yes

P33

Pull-up

1: No

0: Yes

P32

Pull-up

1: No

0: Yes

P31

Pull-up

1: No

0: Yes

P30

Pull-up

1: No

0: Yes

8004H

(0004H)

P57

Pull-up

1: No

0: Yes

P56

Pull-up

1: No

0: Yes

P55

Pull-up

1: No

0: Yes

P54

Pull-up

1: No

0: Yes

P53

Pull-up

1: No

0: Yes

P52

Pull-up

1: No

0: Yes

P51

Pull-up

1: No

0: Yes

P50

Pull-up

1: No

0: Yes

8005H

(0005H)

Vacancy

Readable and

writable

Vacancy

Readable and

writable

Vacancy

Readable and

writable

P64

Pull-up

1: No

0: Yes

P63

Pull-up

1: No

0: Yes

P62

Pull-up

1: No

0: Yes

P61

Pull-up

1: No

0: Yes

P60

Pull-up

1: No

0: Yes

8006H

(0006H)

Vacancy

Readable and

writable

Vacancy

Readable and

writable

Vacancy

Readable and

writable

Vacancy

Readable and

writable

Vacancy

Readable and

writable

Vacancy

Readable and

writable

Vacancy

Readable and

writable

Reserved bit

Readable and

writable

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