ML610Q421 datasheet(17/37 Pages) LAPIS

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FEDL610Q421-03

ML610Q421/ML610Q422

PIN DESCRIPTION

Pin name

I/O

Description

Primary/

Secondary/

Tertiary

Logic

System

RESET_N

Reset input pin. When this pin is set to a “L” level, system reset mode is

set and the internal section is initialized. When this pin is set to a “H” level

subsequently, program execution starts. A pull-up resistor is internally

connected.

—

Negative

XT0

Crystal connection pin for low-speed clock.

A 32.768 kHz crystal oscillator (see measuring circuit 1) is connected to

this pin. Capacitors CDL and CGL are connected across this pin and VSS

as required.

—

XT1

—

OSC0

Crystal/ceramic connection pin for high-speed clock.

A crystal or ceramic is connected to this pin (4.1 MHz max.). Capacitors

CDH and CGH

(see measuring circuit 1) are connected across this pin

and VSS.

This pin is used as the secondary function of the P10 pin(OSC0) and P11

pin(OSC1).

Secondary

—

OSC1

Secondary

—

LSCLK

Low-speed clock output pin. This pin is used as the secondary function of

the P20 pin.

Secondary

—

OUTCLK

High-speed clock output pin. This pin is used as the secondary function of

the P21 pin.

Secondary

—

General-purpose input port

P00-P03

General-purpose input port.

Since these pins have secondary functions, the pins cannot be used as a

port when the secondary functions are used.

Primary

Positive

P10-P11

General-purpose input port.

Since these pins have secondary functions, the pins cannot be used as a

port when the secondary functions are used.

Primary

Positive

General-purpose output port

P20-P22

General-purpose output port.

Since these pins have secondary functions, the pins cannot be used as a

port when the secondary functions are used.

Primary

Positive

General-purpose input/output port

P30-P35

I/O General-purpose input/output port.

Since these pins have secondary functions, the pins cannot be used as a

port when the secondary functions are used.

Primary

Positive

P40-P47

I/O General-purpose input/output port.

Since these pins have secondary functions, the pins cannot be used as a

port when the secondary functions are used.

Primary

Positive

PA0-PA7

I/O General-purpose input/output port.

These pins are for the ML610Q421, but are not provided in the

ML610Q422.

Primary

Positive

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