MB89925 查看數據表（PDF） - Fujitsu

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产品描述 (功能)

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MB89925

8-bit Proprietary Microcontroller

Fujitsu 

MB89920 Series

s MASK OPTIONS

Part number

No.

Specifying procedure

MB89923

MB89925

Specify when

ordering

masking

MB89P928

Set with EPROM

programmer

MB89PV920

Setting not

possible

Pull-up resistors

1

P00 to P07, P20 to P27,

P30 to P32, P90 to P97

P00 to P07, P20 to P27,

P30 to P32, P90 to P97

: Selectable by pin

Can be set per pin

No pull-up resistor

Power-on reset

2

Power-on reset provided

No power-on reset

Selectable

Can be set

With power-on

reset

Oscillation stabilization time slection (at 8 HZ)

Cystal oscillator

3

(32.8 ms/8MHZ)

Ceramic oscillator

(2.05 ms/8 MHZ)

Selectable

Can be set

Crystal oscillator

(32.8 ms/8 MHZ)

Reset pin output

4

Reset output provided

No reset output

Selectable

Can be set

With reset output

Watchdog timer

5

Activation prohibited

Automatic activation

Selectable

Can be set

Inactive by default

(Can be activated

by software)

Low-voltage detection reset circuit

6

Activation prohibited

Automatic activation

Selectable

Can be set

Inactive by default

(Can be activated

by software)

Low-voltage detection reset output

7

Output disabled

Output enabled

Selectable

Can be set

Inactive by default

(Can be activated

by software)

Low-voltage detection voltage

8

3.3 V ± 0.3 V

3.6 V ± 0.3 V

4.0 V ± 0.3 V

Selectable

Can be set

Register setting

Low-voltage detection reset/watchdog

9

timer function selection

Register setting valid

Option setting valid

Selectable

Can be set

Fixed to register

setting

42

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