HT1612 View Datasheet(PDF) - Holtek Semiconductor

Part Name

Description

Manufacturer

HT1612

Timer with Dialer Interface

Holtek Semiconductor 

HT1612

Pad Name

DI

SK

VSS

VA

VB

VC

VDD

NC

I/O

Internal

Connection

Description

I

CMOS IN

Pull-High

Serial data input pad (connected to the dialer)

Data should be valid at the falling edge of SK

I

CMOS IN

Pull-High

Clock input pad (connected to the dialer)

I

—

Negative power supply (GND)

O CMOS OUT Voltage doubler, connected to the external capacitor

O CMOS OUT Voltage doubler, connected to the external capacitor

O CMOS OUT Voltage doubler, connected to the external capacitor

I

—

Positive power supply

—

—

No connection

Approximate internal connection circuit

Absolute Maximum Rantings

Supply Voltage ............................... –0.3V to 5V

Input Voltage ..................... VSS–0.3 to VDD+0.3

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

Operating Temperature ............. –20°C to 75°C

4

5th July ’95

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