HT48R06A-1(2000) Просмотр технического описания (PDF) - Holtek Semiconductor

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производитель

HT48R06A-1
(Rev.:2000)

8-Bit OTP Microcontroller

Holtek Semiconductor 

Preliminary

HT48R06A-1

Pin Description

Pin No.

Pin Name

I/O

ROM Code

Option

Description

4~1

18~15

PA0~PA7

Bidirectional 8-bit input/output port. Each bit can be

I/O

Pull-high*

Wake-up

configured as wake-up input by ROM code option.

Software instructions determine the CMOS output or

schmitt trigger input with a pull-high resistor (deter-

mined by pull-high options).

Bidirectional 3-bit input/output port. Software in-

structions determine the CMOS output or schmitt

trigger input with a pull-high resistor (determined by

7

PB0/BZ

Pull-high* pull-high options).

6

PB1/BZ

I/O I/O or The PB0 and PB1 are pin-shared with the BZ and BZ,

5

PB2

BZ/BZ respectively. Once the PB0 and PB1 are selected as

buzzer driving outputs, the output signals come from

an internal PFD generator (shared with timer/event

counter).

8

VSS

¾

¾

Negative power supply, ground

Bidirectional I/O lines. Software instructions deter-

mine the CMOS output or SCHMITT trigger input

9

10

PC0/INT

PC1/TMR

with a pull-high resistor (determined by pull-high op-

I/O Pull-high* tions). The external interrupt and timer input are

pin-shared with the PC0 and PC1, respectively. The

external interrupt input is activated on a high to low

transition.

11

RES

I

¾

Schmitt trigger reset input. Active low

12

VDD

¾

¾

Positive power supply

13

OSC1

14

OSC2

OSC1, OSC2 are connected to an RC network or Crys-

I Crystal tal (determined by ROM code option) for the internal

O

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

output terminal for 1/4 system clock.

* All pull-high resistors are controlled by an option bit.

Absolute Maximum Ratings

Supply Voltage ...............VSS-0.3V to VSS+5.5V

Input Voltage .................VSS-0.3V to VDD+0.3V

Storage Temperature.................-50°C to 125°C

Operating Temperature ..............-40°C to 85°C

Note: These are stress ratings only. Stresses exceeding the range specified under "Absolute Maxi-

mum Ratings" may cause substantial damage to the device. Functional operation of this device

at other conditions beyond those listed in the specification is not implied and prolonged expo-

sure to extreme conditions may affect device reliability.

3

February 25, 2000

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