HT1612 datasheet(4/14 Pages) HOLTEK

Part #	HT1612

Description	Timer with Dialer Interface

PDF	14 Pages

Scroll/Zoom	100%

Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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4 / 14 page

Pad Name

I/O

Internal

Connection

Description

CMOS IN

Pull-High

Serial data input pad (connected to the dialer)

Data should be valid at the falling edge of SK

CMOS IN

Pull-High

Clock input pad (connected to the dialer)

VSS

—

Negative power supply (GND)

CMOS OUT

Voltage doubler, connected to the external capacitor

CMOS OUT

Voltage doubler, connected to the external capacitor

CMOS OUT

Voltage doubler, connected to the external capacitor

VDD

—

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

HT1612

5th July ’95

HT1612 Datasheet(PDF) 4 Page - Holtek Semiconductor Inc