MB90F548GPF datasheet(10/67 Pages) FUJITSU

10 / 67 page

MB90540/540G/545/545G Series

(Continued)

Pin No.

Pin name

Circuit

type

Function

LQFP*2

QFP*1

P33

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

enabled in the single-chip mode, external bus 8-bit mode or

when WRH pin output is disabled.

WRH

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 external bus 16-bit mode is selected, and when the

WRH output pin is enabled.

P34

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

enabled in the single-chip mode or when the hold function is

disabled.

HRQ

Hold request input pin. This function is enabled when both the

external bus and the hold functions are enabled.

P35

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

enabled in the single-chip mode or when the hold function is

disabled.

HAK

Hold acknowledge output pin. This function is enabled when

both the external bus and the hold functions are enabled.

P36

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

enabled in the single-chip mode or when the external ready

function is disabled.

RDY

Ready input pin. This function is enabled when both the

external bus and the external ready functions are enabled.

P37

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

enabled in the single-chip mode or when the CLK output is dis-

abled.

CLK

CLK output pin. This function is enabled when both the

external bus and CLK outputs are enabled.

P40

General I/O port. This function is enabled when UART0

disables the serial data output.

SOT0

Serial data output pin for UART0. This function is enabled

when UART0 enables the serial data output.

P41

General I/O port. This function is enabled when UART0

disables serial clock output.

SCK0

Serial clock I/O pin for UART0. This function is enabled when

UART0 enables the serial clock output.

P42

General I/O port. This function is always enabled.

SIN0

Serial data input pin for UART0. Set the corresponding Port

Direction Register to input if this function is used.

P43

General I/O port. This function is always enabled.

SIN1

Serial data input pin for UART1. Set the corresponding Port

Direction Register to input if this function is used.

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