UPD6134 datasheet(4/64 Pages) NEC

Part #	UPD6134

Description	4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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4

µPD6133, 6134

Data Sheet U10454EJ6V0DS00

TABLE OF CONTENTS

1.

PIN FUNCTIONS .........................................................................................................................

6

1.1

List of Pin Functions .........................................................................................................................

6

1.2

INPUT/OUTPUT Circuits of Pins ......................................................................................................

7

1.3

Dealing with Unused Pins ................................................................................................................

8

2.

INTERNAL CPU FUNCTIONS ....................................................................................................

9

2.1

Program Counter (PC) ......................................................................................................................

9

2.2

Stack Pointer (SP) .............................................................................................................................

9

2.3

Address Stack Register (ASR (RF)) .................................................................................................

9

2.4

Program Memory (ROM) ................................................................................................................... 10

2.5

Data Memory (RAM) .......................................................................................................................... 10

2.6

Data Pointer (DP) ............................................................................................................................... 11

2.7

Accumulator (A) ................................................................................................................................ 11

2.8

Arithmetic and Logic Unit (ALU) ...................................................................................................... 12

2.9

Flags ................................................................................................................................................... 12

2.9.1

Status flag (F) .......................................................................................................................... 12

2.9.2

Carry flag (CY) ........................................................................................................................ 13

3.

PORT REGISTERS (PX) ............................................................................................................. 14

3.1

KI/O Port (P0) .......................................................................................................................................

15

3.2

KI Port/Special Ports (P1) ................................................................................................................. 16

3.2.1

KI port (P11: bits 4-7 of P1) .....................................................................................................16

3.2.2

S0 port (bit 2 of P1) .................................................................................................................. 16

3.2.3

S1/LED (bit 3 of P1) ................................................................................................................. 16

3.3

Control Register 0 (P3) .....................................................................................................................

17

3.4

Control Register 1 (P4) .....................................................................................................................

18

4.

TIMER ......................................................................................................................................... 19

4.1

Timer Configuration ..........................................................................................................................

19

4.2

Timer Operation .................................................................................................................................

20

4.3

Carrier Output .................................................................................................................................... 21

4.4

Software Control of Timer Output ...................................................................................................

21

5.

STANDBY FUNCTION ................................................................................................................ 22

5.1

Outline of Standby Function ............................................................................................................ 22

5.2

Standby Mode Setup and Release ...................................................................................................

23

5.3

Standby Mode Release Timing ........................................................................................................

24

6.

RESET PIN .................................................................................................................................. 26

7.

POC CIRCUIT (MASK OPTION) ................................................................................................ 27

7.1

Functions of POC Circuit .................................................................................................................. 28

7.2

Oscillation Check at Low Supply Voltage .......................................................................................

28

8.

SYSTEM CLOCK OSCILLATOR ................................................................................................ 29

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