MB90440G Просмотр технического описания (PDF) - Fujitsu

Номер в каталоге

Компоненты Описание

Список матч

MB90440G

16-bit Proprietary Microcontroller

Fujitsu 

MB90440G Series

s PIN DESCRIPTION

Pin No. Pin name Circuit type

Function

82

83

X0

X1

A

(Oscillation)

High speed oscillator input pins

80

79

X0A

X1A

A

(Oscillation)

Low speed oscillator input pins

77

RST

B

External reset request input

52

N.C.



not connected

P00 to P07

General I/O port with programmable pullup. This function is en-

abled in the single-chip mode.

85 to 92

H

AD00 to AD07

I/O pins for 8 lower bits of the external address/data bus. This func-

tion is enabled when the external bus is enabled.

P10 to P17

General I/O port with programmable pullup. This function is en-

abled in the single-chip mode.

93 to 100

H

AD08 to AD15

I/O pins for 8 higher bits of the external address/data bus. This func-

tion is enabled when the external bus is enabled.

1 to 8

P20 to P27

A16 to A23

General I/O port with programmable pullup. This function is en-

abled in the single-chip mode.

H

I/O pins of 8 bits for A16 to A23 ot the external address bus. This

function is enabled when the external bus is enabled.

P30

9

ALE

General I/O port with programmable pullup. This function is en-

abled in the single-chip mode.

H

Address latch enable output pin. This function is enabled when the

external bus is enabled.

P31

10

RD

General I/O port with programmable pullup. This function is en-

abled in the single-chip mode.

H

Read strobe output pin for the data bus. This function is enabled

when the external bus is enabled.

General I/O port with programmable pullup. This function is en-

P32

abled in the single-chip mode or when the WR/WRL pin output is

disabled.

12

WRL

WR

H

Write strobe output pin for the data bus. This function is enabled

when the external bus is in enable mode and the WR/WRL pin out-

put is enabled. WRL is used as a write-strobe output pin for 8 lower

bits of the data bus in 16-bit access while WR is used as a write-

strobe output pin for 8 bits of the data bus in 8-bit access.

P33

13

WRH

General I/O port with programmable pullup. This function is en-

abled in the single-chip mode or external bus 8-bit mode or when

WRH pin output is disabled.

H

Write strobe output pin for the 8 higher bits of the data bus. This

function is enabled when the external bus is enabled, when the ex-

ternal bus 16-bit mode is selected, and when the WRH output pin

is enabled.

(Continued)

7

Share Link: