ML610421 datasheet(13/31 Pages) LAPIS

13 / 31 page

FEDL610421-02

ML610421

13/31

Pin name

I/O

Description

Primary/

Secondary/

Tertiary

Logic

UART

TXD0

UART data output pin. This pin is used as the secondary function of the

P43 pin.

Secondary

Positive

RXD0

UART data input pin. This pin is used as the secondary function of the

P42 or the primary function of the P02 pin.

Primary/

Secondary

Positive

2C bus interface

SDA

I/O I

2C data input/output pin. This pin is used as the secondary function of the

P40 pin. This pin has an NMOS open drain output. When using this pin as

a function of the I

2C, externally connect a pull-up resistor.

Secondary

Positive

SCL

I/O I

2C clock output pin. This pin is used as the secondary function of the P41

pin. This pin has an NMOS open drain output. When using this pin as a

function of the I

2C, externally connect a pull-up resistor.

Secondary

Positive

Synchronous serial (SSIO)

SCK0

I/O Synchronous serial clock input/output pin. This pin is used as the tertiary

function of the P41 or P45 pin.

Tertiary

—

SIN0

Synchronous serial data input pin. This pin is used as the tertiary function

of the P40 or P44 pin.

Tertiary

Positive

SOUT0

Synchronous serial data output pin. This pin is used as the tertiary

function of the P42 or P46 pin.

Tertiary

Positive

PWM

PWM0

PWM0 output pin. This pin is used as the tertiary function of the P43 or

P34 pin.

Tertiary

Positive

T02P0CK

PWM0 external clock input pin. This pin is used as the primary function of

the P44 pin.

Primary

—

External interrupt

NMI

External non-maskable interrupt input pin. An interrupt is generated on

both edges.

Primary

Positive/

negative

EXI0-3

External maskable interrupt input pins. Interrupt enable and edge

selection can be performed for each bit by software. These pins are used

as the primary functions of the P00-P03 pins.

Primary

Positive/

negative

Capture

CAP0

Capture trigger input pins. The value of the time base counter is captured

in the register synchronously with the interrupt edge selected by software.

These pins are used as the primary functions of the P00 pin(CAP0) and

P01 pin(CAP1).

Primary

Positive/

negative

CAP1

Primary

Positive/

negative

Timer

T02P0CK

External clock input pin used for both Timer 0 and Timer 2. The clocks for

these timers are selected by software. This pin is used as the primary

function of the P44 pin.

Primary

—

T13P1CK

External clock input pin used for both Timer 1 and Timer 3. The clocks for

these timers are selected by software. This pin is used as the primary

function of the P45 pin.

Primary

—

Melody

MD0

Melody/buzzer signal output pin. This pin is used as the secondary

function of the P22 pin.

Secondary

Positive/

negative

LED drive

LED0-2

Nch open drain output pins to drive LED.

Primary

Positive/

negative

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