HT85F2270 datasheet(21/226 Pages) HOLTEK

21 / 226 page

Rev. 1.00

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Standard 8051 8-Bit Flash MCU

HT85F2260/HT85F2270/HT85F2280

Pin Name

Function

OPT

I/T

O/T

Description

P1.�/INT6/CC�

P1.�

P1�0

P1�1

C�OS General purpose I/O. Register selected I/O mode

INT6

—

External Interrupt 6 Input

CC�

—

C�OS Compare/Capture input/output for PCA module �

P1.4/INT�

P1.4

P1�0

P1�1

C�OS General purpose I/O. Register selected I/O mode

INT�

—

External Interrupt � Input

P1.�/T�EX

P1.�

P1�0

P1�1

C�OS General purpose I/O. Register selected I/O mode

T�EX

—

Timer � capture trigger

P1.6/T�

P1.6

P1�0

P1�1

C�OS General purpose I/O. Register selected I/O mode

T�

—

C�OS Timer � external input or Timer � programmable clock output

P1.7

P1�0

P1�1

C�OS General purpose I/O. Register selected I/O mode

P�.0~P�.6

P��0

P��1

C�OS General purpose I/O. Register selected I/O mode

P�.7/T�

P�.7

P��0

P��1

C�OS General purpose I/O. Register selected I/O mode

T�

—

Timer � External Input

P�.0/RXD0

P�.0

P��0

P��1

C�OS General purpose I/O. Register selected I/O mode

RXD0

—

UART0 Receive Data Input

P�.1/TXD0

P�.1

P��0

P��1

C�OS General purpose I/O. Register selected I/O mode

TXD0

—

C�OS UART0 Transmit Data Output

P�.�/INT0

P�.�

P��0

P��1

C�OS General purpose I/O. Register selected I/O mode

INT0

—

External Interrupt 0 Input

P�.�/INT1

P�.�

P��0

P��1

C�OS General purpose I/O. Register selected I/O mode

INT1

—

External Interrupt 1 Input

P�.4/T0

P�.4

P��0

P��1

C�OS General purpose I/O. Register selected I/O mode

—

Timer 0 External Input

P�.�/T1

P�.�

P��0

P��1

C�OS General purpose I/O. Register selected I/O mode

—

Timer 1 External Input

P�.6/RXD1

P�.6

P��0

P��1

C�OS General purpose I/O. Register selected I/O mode

RXD1

—

UART1 Receive Data Input

P�.7/TXD1

P�.7

P��0

P��1

C�OS General purpose I/O. Register selected I/O mode

TXD1

—

C�OS UART1 Transmit Data Output

P4.0/AIN.0

P4.0

P4�0

P4�1

C�OS General purpose I/O. Register selected I/O mode

AIN.0

—

ADC Input Channel 0

P4.1/AIN.1

P4.1

P4�0

P4�1

C�OS General purpose I/O. Register selected I/O mode

AIN.1

—

ADC Input Channel 1

P4.�/AIN.�

P4.�

P4�0

P4�1

C�OS General purpose I/O. Register selected I/O mode

AIN.�

—

ADC Input Channel �

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