HMS81004E 데이터 시트보기 (PDF) - Hynix Semiconductor

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HMS81004E

8-BIT SINGLE-CHIP MICROCONTROLLERS

Hynix Semiconductor 

HMS81004E/08E/16E/24E/32E

5. PIN FUNCTION

VDD: Supply voltage.

VSS: Circuit ground.

TEST: Used for shipping inspection of the IC. For normal

operation, it should be connected to VDD.

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. R0

pins 1 or 0 written to the Port Direction Register can be

used as outputs or inputs.

R10~R17: R1 is an 8-bit CMOS bidirectional I/O port. R1

pins 1 or 0 written to the Port Direction Register can be

used as outputs or inputs.

In addition, R1 serves the functions of the various follow-

ing special features .

Port pin

Alternate function

R11 INT1 (External Interrupt input 1)

R12 INT2 (External Interrupt input 2)

R14 EC (Event Counter input )

R15 T2 (Timer / Counter input 2)

R16 T1 (Timer / Counter input 1)

R17 T0 (Timer / Counter input 0)

R20~R24: R2 is an 8-bit CMOS bidirectional I/O port. R2

pins 1 or 0 written to the Port Direction Register can be

used as outputs or inputs .

8

JUNE 2001 Ver 1.00

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