MB90F482 datasheet(10/120 Pages) FUJITSU

10 / 120 page

MB90480/485 Series

(Continued)

Pin No.

Pin name

I/O

circuit

type*3

Function

QFP*1 LQFP*2

21, 22

19, 20

P43, P44

F (CMOS)

MB90480

series

This is a general purpose I/O port.

A11, A12

In non-multiplex mode, this pin functions as an external

address pin.

P43, P44

F (CMOS)

MB90485

series

This is a general purpose I/O port.

A11, A12

In non-multiplex mode, this pin functions as an external

address pin.

MT00,

MT01

µPG output pin.

P45

(CMOS)

MB90480

series

This is a general purpose I/O port.

A13

In non-multiplex mode, this pin functions as an external

address pin.

P45

(CMOS/H)

MB90485

series

This is a general purpose I/O port.

A13

In non-multiplex mode, this pin functions as an external

address pin.

EXTC*4

µPG input pin.

25, 26

23, 24

P46, P47

(CMOS)

This is a general purpose I/O port.

A14, A15

In non-multiplex mode, this pin functions as an external address pin.

OUT4/

OUT5

Output compare event output pins.

P50

(CMOS)

This is a general purpose I/O port. In external bus mode, this pin

functions as the ALE pin.

ALE

In external bus mode, this pin functions as the address load enable

(ALE) signal pin.

P51

(CMOS)

This is a general purpose I/O port. In external bus mode, this pin

functions as the RD pin.

In external bus mode, this pin functions as the read strobe output (RD)

signal pin.

P52

(CMOS)

This is a general purpose I/O port. In external bus mode, when the WRE

bit in the EPCR register is set to “1”, this pin functions as the WRL pin.

WRL

In external bus mode, this pin functions as the lower data write strobe

output (WRL) pin. When the WRE bit in the EPCR register is set to “0”,

this pin functions as a general purpose I/O port.

P53

(CMOS)

This is a general purpose I/O port. In external bus mode with 16-bit bus

width, when the WRE bit in the EPCR register is set to “1”, this pin

functions as the WRH pin.

WRH

In external bus mode with 16-bit bus width, this pin functions as the

upper data write strobe output (WRH) pin. When the WRE bit in the

EPCR register is set to “0”, this pin functions as a general purpose I/O

port.

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