Pin Description

Pin Name I/O

Internal

Connection

Description

A0~A9

I TRANSMISSION

GATE

Input pins for address A0~A9 setting

They can be externally set to VDD or VSS or left open.

AD8~AD11

I TRANSMISSION

GATE

Input pins for address/data (AD8~AD11) setting

They can be externally set to VDD or VSS or left open.

D8~D11

I

CMOS IN

Pull-high

Input pins for data (D8~D11) setting and transmission en-

able (active low)

They can be externally set to VSS or left open (see Note).

DOUT

O

CMOS OUT

Encoder data serial transmission output

LED

O

NMOS OUT

Transmission enable indicator, active low

TE

I

CMOS IN

Pull-high

Transmission enable, active low (see Note)

OSC1

I

OSCILLATOR

Oscillator input pin

OSC2

O

OSCILLATOR

Oscillator output pin

VSS

¾¾

Negative power supply, ground

VDD

¾¾

Positive power supply

Note: D8~D11 are data input and transmission enable pins of the HT6012/HT6014.

TE is the transmission enable pin of the HT6010.

Approximate internal connections

4

December 13, 1999

T R AN SM I S SI O N

GA T E

CM O S I N

Pu l l - h i g h

CM O S O UT

NM O S O UT

OS C I L L A T OR

OS C 1

OS C 2

EN