PCA84C923D データシートの表示（PDF） - Philips Electronics

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PCA84C923D

Microcontrollers for universal infrared remote transmitter applications

Philips Electronics 

Philips Semiconductors

Microcontrollers for universal infrared

remote transmitter applications

CONTENTS

1

FEATURES

2

GENERAL DESCRIPTION

3

ORDERING INFORMATION

4

BLOCK DIAGRAMS

5

PINNING INFORMATION

5.1

Pinning

5.2

Pin description

6

GENERAL OPERATION DESCRIPTION

6.1

System selection

6.2

Key scanning

6.3

Accessing command code

7

HARDWARE MODULATOR

7.1

ON-time Register

7.2

OFF-time Register

7.3

Pulse Timer

7.4

Pulse Counter

7.5

Hardware Modulator Control Register

(HMCTL)

7.6

Operation of the Hardware Modulator

8

CODING TABLE

8.1

Accessing the Coding Table

9

WATCHDOG TIMER (WDT)

10

PORT OPTIONS

11

INTERRUPTS

11.1

External keypad wake-up and T0/INT pin

interrupt

11.2

Hardware Modulator interrupt

11.3

Internal Timer/counter (T1) interrupt

12

DERIVATIVE REGISTERS

13

EMULATION

14

LIMITING VALUES

15

DC CHARACTERISTICS

16

AC CHARACTERISTICS

17

PACKAGE OUTLINES

18

SOLDERING

18.1

Introduction

18.2

SDIP

18.3

SO and VSO

19

DEFINITIONS

20

LIFE SUPPORT APPLICATIONS

Product specification

PCA84C922; PCA84C923

1997 Oct 22

2

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