MC14497

MOTOROLA

1

PCM Remote Control

Transmitter

The MC14497 is a PCM remote control transmitter realized in CMOS

technology. Using a dual–single (FSK/AM) frequency bi–phase modulation, the

transmitter is designed to work with the MC3373 receiver. Information on the

MC3373 can be found in the Motorola

Linear and Interface Integrated Circuits

book (DL128/D).

There is not a decoder device which is compatible with the MC14497.

Typically, the decoding resides in MCU software.

• Both FSK/AM Modulation Selectable

• 62 Channels (Up to 62 Keys)

• Reference Oscillator Controlled by Inexpensive Ceramic Resonator:

Maximum Frequency = 500 kHz

• Very Low Duty Cycle

• Very Low Standby Current: 50 µA Maximum

• Infrared Transmission

• Selectable Start–Bit Polarity (AM Only)

• Shifted Key Mode Available

• Wide Operating Voltage Range: 4 to 10 V

• See Application Notes AN1016 and AN1203

BLOCK DIAGRAM

17

E1

2

E2

1

E3

16

E4

15

E5

14

E6

10

E7

11

E8

ENCODER

7–BIT

SR

SEQUENCE

CONTROL

3–BIT

LATCH

OUTPUT

CONTROL

DIVIDER

MUX

SCANNER

DIVIDER

DIVIDER

OSC

STANDBY

7

6

5

4

FK3

E9

3

FK1

A4 A3 A2 A1

9

VDD

18

8

IN

OUT

12

13

500 kHz CERAMIC

RESONATOR

KEYBOARD

Order this document

by MC14497/D

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

MC14497

P SUFFIX

PLASTIC DIP

CASE 707

ORDERING INFORMATION

MC14497P

Plastic DIP

PIN ASSIGNMENT

A3

E9

E2

E3

VSS

SIGNAL OUT

A1

A2

A4

E5

E4

E1

VDD

E7

E8

OSCin

OSCout

E6

14

15

16

17

18

10

11

12

13

5

4

3

2

1

9

8

7

6

18

1

SAME AS IN DL136/D R3