SAA3049 データシートの表示（PDF） - Philips Electronics

部品番号

コンポーネント説明

一致するリスト

SAA3049

Infrared remote control decoder

Philips Electronics 

Philips Semiconductors

Infrared remote control decoder

Product specification

SAA3049A

Reset

The circuit is shown in Figs 5, 6 and 7. The alternative reset circuit shown in Fig.3 protects against short term power

supply transients by generating a reset.

The reset pin should either be connected to external reset circuitry as proposed or connected to VSS. If connected to VSS,

a reset pulse will be generated by the on-chip Power-on reset circuit at typically 1.3 V (±500 mV accuracy).

handbook, full pagewidth

VCC

20

390 Ω

zener diode

3.6 V

1 kΩ

1.8 kΩ

1N4148

1 µF

SAA3049A

14

BC548

1N4148 68 kΩ

MGE375

Fig.3 Proposed improved reset circuit.

Infrared signal input (pin 9)

This pin is sensitive to a negative-going edge.

Command received indicator (pin 19)

handbook, halfpage

signal at

pin 19

≈15 ms

≈120 ms

MGE376

Fig.4 Output diagram of command acknowledge.

APPLICATION INFORMATION

In Fig.5, the circuit shown is for use with transmitters

SAA3004, SAA3007 or SAA3008; pin 11 is HIGH for

RECS80 code.

In Fig.6, the circuit shown is for use with transmitter types

SAA3006 or SAA3010; pin 11 is LOW for RC5 code.

In Fig.7, the decoder is set for the required subaddress by

holding the address pins HIGH or LOW. Pin 11 is HIGH for

use with transmitter types SAA3004, SAA3007 or

SAA3008 (RECS80 code). Pin 11 is LOW for use with

transmitter types SAA3006 or SAA3010 (RC5 code).

The remote control decoder is for up to 32 subaddresses

with 6 + 1-bit parallel outputs (RC5 code).

1996 Sep 13

7

Share Link: