HT85XXX 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT85XXX

Green Voice

Holtek Semiconductor 

HT85XXX

Pin Description

Pin No.

Pin Name

I/O

Internal

Connection

Description

1, 2, 8,

24~28

NC

¾

¾

No connection

3, 4, 5

PP0, PDA,

PP1

O

¾

Green Voice Speaker control pin

6

VDD

¾

¾

Positive power supply

7

AUD

O

PMOS

Open Drain

Audio output for driving an external transistor

15~9

PB1~PB7

I/O

Pull-high

or CMOS

Bidirectional I/O pins

Can be optioned as trigger inputs or LED outputs

16

PB0

I/O

Pull-high

or CMOS

Bidirectional I/O pins

Can be optioned as CDS interface with internal

Schmitt trigger input

20~17 PA0~PA3

I

Wake-up Trigger inputs

Pull-high Can also be configured as wake-up inputs

21, 22 VSS

¾

¾

Negative power supply, ground

23

OSC

I

¾

Built-in RC oscillator

An oscillator resistor is connected between OSC and VSS

Absolute Maximum Ratings

Supply Voltage.................................-0.3V to 6V

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

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

Operating Temperature ..............-20°C to 70°C

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi-

mum Ratings² 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.

Electrical Characteristics

Ta=25°C

Symbol

Parameter

VDD

ISTB

IDD

IOL

IO

fSYS

Operating Voltage

Standby Current

Operating Current

PB0~PB7 Sink Current

Max. AUD Output Current

System Frequency

Test Conditions

VDD

Conditions

¾

¾

Min. Typ. Max. Unit

2.4 ¾ 5.2 V

3V No load, system HALT ¾ 1

3 mA

3V No load, fSYS=4MHz ¾

5

8 mA

3V VOL=0.3V

4

6

¾ mA

3V VOH=0.6V

-1.5 -2 ¾ mA

3V ROSC=240kW

3.6 4.0 4.4 MHz

4

August 24, 2000

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