MB89181 datasheet(17/50 Pages) FUJITSU

17 / 50 page

MB89180 Series

7. PROM Option Bit Map

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:

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.

• Address 3FF6H cannot be read and should not be accessed.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

3FF0H

Vacancy

Readable

Vacancy

Readable

Oscillation stabilization delay time

Vacancy

Readable

Reset pin

output

1: Yes

0: No

Clock mode

selection

1: Dual clock

0: Single clock

Power-on

reset

1: Yes

0: No

3FF1H

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

3FF2H

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

3FF3H

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

3FF4H

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

3FF5H

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

Vacancy

Readable

WTM1

WTM0

See “s Mask Options”

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