PD62A_15 Datasheet, PDF(6/64 Page) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION

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PD62A_15 Datasheet, PDF (6/64 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION

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ÂµPD62A

TABLE OF CONTENTS

1. PIN FUNCTIONS .......................................................................................................................... 6

1.1 List of Pin Functions ......................................................................................................................... 6

1.2 Pin Input/Output Circuits .................................................................................................................. 7

1.3 Recommended Connection of 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 to 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 Setting 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

Data Sheet U14474EJ2V0DS00

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