HT6230 查看數據表（PDF） - Holtek Semiconductor

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HT6230

Infrared Remote Encoder

Holtek Semiconductor 

HT6230

Pad Description

Pad No. Pad Name

1~3

ZIN1~ZIN3

28

ZIN0

4

MCODE

5

CODE

6~10

11

12~14

15

DRS7~DRS3

VSS

DRS2~DRS0

OSC

16~17 TT2~TT1

18~24

25

26

XIN0~XIN6

VDD

XIN7

27

MS

I/O

Internal

Connection

Description

I

CMOS with

PMOS Pull-high

Detect inputs from Z-key matrix

O

Tri-state

CMOS

Generate modulation output data code with

1/12 system frequency and 1/4 duty cycle

O

Tri-state

CMOS

Generates output data code

O

Open Drain

NMOS

Drive for key scanning

¾

¾

Negative power supply, ground

O

Open Drain

NMOS

Drive for key scanning

I

CMOS

Oscillator input

Switch to four operating modes:

0 0 normal mode

I

CMOS

0 1 test mode 1

1 0 test mode 2

1 1 Reset

I

CMOS with

PMOS Pull-high

Detect inputs from X-key matrix

¾

¾

Positive power supply

I

CMOS with

PMOS Pull-high

Detect input from X-key matrix

Select system mode (Two modes provided:

I

CMOS

One-key system mode and Two-key system

mode)

Approximate internal connection circuits

· Input terminal

P in : M S , T T 1 , T T 2 , O S C

V DD

P in : X IN 0 ~ X IN 7 , Z IN 0 ~ Z IN 3

( w ith p u ll- h ig h r e s is to r )

V DD

V DD

3

April 19, 2000

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