HT48CA0 Просмотр технического описания (PDF) - Holtek Semiconductor

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Компоненты Описание

производитель

HT48CA0

8-bit Microcontroller

Holtek Semiconductor 

HT48CA0

Pad Description

Pad No. Pad Name

1, 22

PB0, PB1

2

3

6

7

13~8

PC0/REM

VDD

VSS

RES

PB2~PB7

21~14 PA0~PA7

OSC1

OSC2

I/O

Mask

Option

Function

2-bit bidirectional input/output lines with pull-high

I/O

Wake-up

or None

resistors. Each bit can be determined as NMOS output

or schmitt trigger input by software instructions. Each

bit can also be configured as wake-up input by mask

option.

O

Level or

Carrier

Level or carrier output pin

PC0 can be set as CMOS output pin or carrier output

pin by mask option.

—

—

Positive power supply

—

—

Negative power supply, GND

I

—

Schmitt trigger reset input. Active low.

I

Wake-up

or None

6-bit schmitt trigger input lines with pull-high

resistors. Each bit can be configured as a wake-up

input by mask option.

Bidirectional 8-bit input/output port with pull-high

I/O

—

resistors. Each bit can be determined as NMOS output

or schmitt trigger input by software instructions.

OSC1, OSC2 are connected to an RC network or a

I

O

Crystal or

RC

crystal (determined by mask option) for the internal

system clock. In the case of RC operation, OSC2 is the

output terminal for 1/4 system clock (NMOS open

drain output).

3

23rd July ’98

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