UPD17073 datasheet(9/226 Pages) NEC

Part #	UPD17073

Description	4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM

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Manufacturer	NEC [NEC]

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9

µPD17072,17073

8.

PERIPHERAL CONTROL REGISTERS ........................................................................................... 45

8.1

Outline of Peripheral Control Registers .................................................................................................. 45

8.2

Configuration and Function of Peripheral Control Registers ................................................................. 46

9.

DATA BUFFER (DBF) ....................................................................................................................... 54

9.1

General ..................................................................................................................................................... 54

9.2

Data Buffer ............................................................................................................................................... 55

9.3

List of Peripheral Hardware and Data Buffer Functions ........................................................................ 56

9.4

Notes on Using Data Buffer ..................................................................................................................... 56

10. GENERAL-PURPOSE PORT ............................................................................................................ 57

10.1

General ..................................................................................................................................................... 57

10.2

General-Purpose I/O Ports (P0B, P0C, P0D) ......................................................................................... 58

10.3

General-Purpose Input Ports (P1A) ........................................................................................................ 62

10.4

General-Purpose Output Ports (P0A, P1B, P1C) ................................................................................... 65

11. INTERRUPT ....................................................................................................................................... 66

11.1

General ..................................................................................................................................................... 66

11.2

Interrupt Control Block ............................................................................................................................. 67

11.3

Interrupt Stack Register ........................................................................................................................... 70

11.4

Stack Pointer, Address Stack Register, and Program Counter ............................................................. 72

11.5

Interrupt Enable Flip-Flop (INTE) ............................................................................................................ 72

11.6

Accepting Interrupt ................................................................................................................................... 73

11.7

Operations after Accepting Interrupt ....................................................................................................... 77

11.8

Exiting from Interrupt Service Routine .................................................................................................... 78

11.9

External (INT Pin) Interrupts ................................................................................................................... 79

11.10 Internal Interrupt ....................................................................................................................................... 81

12. TIMER ................................................................................................................................................ 82

12.1

General ..................................................................................................................................................... 82

12.2

Basic Timer 0 ........................................................................................................................................... 82

12.3

Basic Timer 1 ........................................................................................................................................... 91

13. A/D CONVERTER ............................................................................................................................. 98

13.1

General ..................................................................................................................................................... 98

13.2

Setting A/D Converter Power Supply ...................................................................................................... 99

13.3

Input Selector Block ............................................................................................................................... 100

13.4

Compare Voltage Generator Block and Compare Block ..................................................................... 102

13.5

Comparison Timing Chart ...................................................................................................................... 107

13.6

Performance of A/D Converter .............................................................................................................. 107

13.7

Using A/D Converter .............................................................................................................................. 108

13.8

Status at Reset ....................................................................................................................................... 111

14. SERIAL INTERFACE ....................................................................................................................... 112

14.1

General ................................................................................................................................................... 112

14.2

Clock Input/Output Control Block and Data Input/Output Control Block ............................................. 113

14.3

Clock Control Block ............................................................................................................................... 116

14.4

Clock Counter ........................................................................................................................................ 116

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