UPD17236MC View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD17236MC

4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER

NEC => Renesas Technology 

µPD17230, 17231, 17232, 17233, 17234, 17235, 17236

CONTENTS

1. PIN FUNCTIONS .......................................................................................................................... 8

1.1 Pin Function List ............................................................................................................... 8

1.2 Input/Output Circuits ........................................................................................................ 10

1.3 Processing of Unused Pins ............................................................................................. 11

2. MEMORY SPACE ......................................................................................................................... 12

2.1 Program Counter (PC) ...................................................................................................... 12

2.2 Program Memory (ROM) .................................................................................................. 15

2.3 Stack ................................................................................................................................... 17

2.4 Data Memory (RAM) .......................................................................................................... 19

2.5 Register File (RF) .............................................................................................................. 26

3. PORTS .......................................................................................................................................... 29

3.1 Port 0A (P0A0 through P0A3) ........................................................................................... 29

3.2 Port 0B (P0B0 through P0B3) ........................................................................................... 29

3.3 Port 0C (P0C0 through P0C3) ........................................................................................... 29

3.4 Port 0D (P0D0 through P0D3) ........................................................................................... 29

3.5 Port 0E (P0E0 through P0E3) ............................................................................................ 30

3.6 Port 1A (P1A0) .................................................................................................................... 30

3.7 INT Pin ................................................................................................................................ 31

3.8 Switching Bit I/O ............................................................................................................... 32

3.9 Selecting I/O Mode of Group I/O ..................................................................................... 34

3.10 Specifying Pull-up Resistor Connection ....................................................................... 35

4. CLOCK GENERATOR CIRCUIT ................................................................................................. 36

4.1 Instruction Execution Time (CPU Clock) Selection ..................................................... 36

5. 8-BIT TIMER AND REMOTE CONTROLLER CARRIER GENERATOR CIRCUIT .................. 37

5.1 Configuration of 8-bit Timer (with modulo function) ................................................... 37

5.2 Function of 8-bit Timer (with modulo function) ........................................................... 39

5.3 Carrier Generator Circuit for Remote Controller ......................................................... 41

6. BASIC INTERVAL TIMER/WATCHDOG TIMER ........................................................................ 46

6.1 Source Clock for Basic Interval Timer ........................................................................... 46

6.2 Controlling Basic Interval Timer ..................................................................................... 46

6.3 Operation Timing for Watchdog Timer .......................................................................... 48

7. INTERRUPT FUNCTIONS ........................................................................................................... 49

7.1 Interrupt Sources .............................................................................................................. 49

7.2 Hardware of Interrupt Control Circuit ............................................................................ 50

7.3 Interrupt Sequence ........................................................................................................... 53

8. STANDBY FUNCTIONS ............................................................................................................... 55

8.1 HALT Mode ......................................................................................................................... 55

8.2 HALT Instruction Execution Conditions ........................................................................ 56

6

Data Sheet U14360EJ1V0DS00

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