MB89656APF datasheet(17/52 Pages) FUJITSU

17 / 52 page

MB89650AR Series

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.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

0000H

Vacancy

Readable

and

writable

Vacancy

Readable

and

writable

Vacancy

Readable

and

writable

Vacancy

Readable

and

writable

Vacancy

Readable

and

writable

P81

Pull-up

1: No

0: Yes

P80

Pull-up

1: No

0: Yes

Single/dual-

clock system

1: Dual clock

2: Single

clock

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

0002H

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

0003H

P67

Pull-up

1: No

0: Yes

P66

Pull-up

1: No

0: Yes

P65

Pull-up

1: No

0: Yes

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

0004H

P47 to P44

Pull-up

1: No

0: Yes

P43 to P40

Pull-up

1: No

0: Yes

P26

Pull-up

1: No

0: Yes

P25

Pull-up

1: No

0: Yes

P24

Pull-up

1: No

0: Yes

P22

Pull-up

1: No

0: Yes

P21

Pull-up

1: No

0: Yes

P20

Pull-up

1: No

0: Yes

0005H

Vacancy

Readable

and

writable

Vacancy

Readable

and

writable

Vacancy

Readable

and

writable

P17 to 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

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