MB90F334APMC datasheet(9/72 Pages) FUJITSU

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MB90330A Series

DS07-13734-7E

(Continued)

Pin no.

Pin name

I/O

Circuit

type*

Function

P45

General purpose input/output port.

A13

Function as the external address pin in non-multi-bus mode.

SIN1

Function as a data input pin for UART ch.1.

P46

General purpose input/output port.

A14

Function as the external address pin in non-multi-bus mode.

SOT1

Function as a data output pin for UART ch.1.

P47

General purpose input/output port.

A15

Function as the external address pin in non-multi-bus mode.

SCK1

Function as a clock I/O pin for UART ch.1.

P50

General purpose input/output port.

ALE

Function as the address latch enable signal pin in external bus mode.

P51

General purpose input/output port.

Function as the read strobe output pin in external bus mode.

P52

General purpose input/output port.

WRL

Function as the data write strobe output pin on the lower side in external

bus mode. This pin functions as a general-purpose I/O port when the WRE

bit in the EPCR register is “0”.

P53

General purpose input/output port.

WRH

Function as the data write strobe output pin on the higher side in bus width

16-bit external bus mode. This pin functions as a general-purpose I/O port

when the WRE bit in the EPCR register is “0”.

P54

General purpose input/output port.

HRQ

Function as the hold request input pin in external bus mode. This pin

functions as a general-purpose I/O port when the HDE bit in the EPCR

P55

General purpose input/output port.

HAK

Function as the hold acknowledge output pin in external bus mode. This pin

functions as a general-purpose I/O port when the HDE bit in the EPCR

P56

General purpose input/output port.

RDY

Function as the external ready input pin in external bus mode. This pin

functions as a general-purpose I/O port when the RYE bit in the EPCR

P57

General purpose input/output port.

CLK

Function as the machine cycle clock output pin in external bus mode. This

pin functions as a general-purpose I/O port when the CKE bit in the EPCR

21, 22

P60, P61

General purpose input/output port. (With stand voltage of 5 V)

INT0, INT1

Function as external interrupt ch.0 and ch.1 input pins.

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