MC80F0204 Datasheet, PDF(12/126 Page) List of Unclassifed Manufacturers

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MC80F0204 Datasheet, PDF (12/126 Pages) List of Unclassifed Manufacturers – 8-BIT SINGLE-CHIP MICROCONTROLLERS

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MC80F0104/0204

Preliminary

5. PIN FUNCTION

VDD: Supply voltage.

VSS: Circuit ground.

RESET: Reset the MCU.

XIN: Input to the inverting oscillator amplifier and input to

the internal main clock operating circuit.

XOUT: Output from the inverting oscillator amplifier.

R00~R07: R0 is an 8-bit, CMOS, bidirectional I/O port.

RA pins can be used as outputs or inputs according to â1â

or â0â written the their Port Direction Register(R0IO).

Port pin

R00

R01

R02

R03

R04

R05

R06

R07

Alternate function

INT3 ( External Interrupt Input Port3 )

SCK ( SPI CLK )

AN1 ( Analog Input Port 1 )

SI ( SPI Serial Data Input )

AN2 ( Analog Input Port 2 )

SOUT ( SPI Serial Data Output )

AN3 ( Analog Input Port 3 )

INT2 ( External Interrupt Input Port2 )

AN4 ( Analog Input Port 4 )

EC0 ( Event Counter Input Source 0 )

RXD ( UART Data Input )

AN5 ( Analog Input Port 5 )

T0O (Timer0 Clock Output )

TXD ( UART Data Output )

AN6 ( Analog Input Port 6 )

T2O (Timer2 Clock Output )

ACLK ( UART Clock Input )

AN7 ( Analog Input Port 7 )

EC1 ( Event Counter Input Source 1 )

Table 5-1 R0 Port

In addition, R0 serves the functions of the various special

features in Table 5-1 .

R10~R14: R1 is a 5-bit, CMOS, bidirectional I/O port. R1

pins can be used as outputs or inputs according to â1â or

â0â written the their Port Direction Register (R1IO).

R1 serves the functions of the various following special

features in Table 5-2

Port pin

R10

R11

R12

R13

R14

Alternate function

AN0 ( Analog Input Port 0 )

AVref ( External Analog Reference Pin )

PWM1O ( PWM1 Output )

INT0 ( External Interrupt Input Port 0 )

PWM3O ( PWM3 Output )

INT1 ( External Interrupt Input Port 1 )

BUZ ( Buzzer Driving Output Port )

Table 5-2 R1 Port

R31~R34: R3 is an 4-bit, CMOS, bidirectional I/O port.

R3 pins can be used as outputs or inputs according to â1â

or â0â written the their Port Direction Register (R3IO).

R3 serves the functions of the serial interface following

special features in Table 5-3 .

Port pin

R31

R32

R33

R34

R35

Alternate function

AN14 ( Analog Input Port 14 )

AN15 ( Analog Input Port 15 )

XIN ( Oscillation Input )

XOUT ( Oscillation Output )

RESET ( Reset input port )

Table 5-3 R3 Port

Mar. 2005 Ver 0.2

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