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UPD75212AGF: Description4-BIT SINGLE-CHIP MICROCOMPUTER; File Size360KB，70 Pages; ManufacturerNEC ( Renesas ); Websitehttps://www2.renesas.cn/zh-cn/

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UPD75212AGF Overview

4-BIT SINGLE-CHIP MICROCOMPUTER

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DATA SHEET

MOS INTEGRATED CIRCUIT

PD75212A

4-BIT SINGLE-CHIP MICROCOMPUTER

DESCRIPTION

The

PD75212A is a microcomputer with a CPU capable of 1-, 4-, and 8-bit data processing, ROM, RAM, I/O ports,

a fluorescent display tube controller/driver, a watch timer, a timer/pulse generator capable of outputting 14-bit PWM,

a serial interface and a vectored interrupt function integrated on a single-chip.

The

PD75212A is a version of the

PD75216A with a small ROM capacity (12K).

The

PD75212A uses the VCR, ECR and CD fluorescent display tubes as display devices and is most suitable for

applications requiring the timer/watch function and high-speed interrupt servicing. It can help to provide the unit

with many functions and to decrease performance costs.

Functions are described in detail in the following User’s Manual. Be sure to read when carrying out design work.

PD75216A User’s Manual: IEM-988

FEATURES

•

Architecture equal to that of an 8-bit microcomputer

High-speed operation : Minimum instruction execution time : 0.95

s (when operated at 4.19 MHz)

Instruction execution time variable function realizing a wide range of operating voltages

On-chip large-capacity program memory : 12K bytes

•

Watch operation with an ultra low current consumption : 5

A TYP. (at the 3 V operation)

•

On-chip programmable fluorescent display tube controller/driver

•

Timer function : 4 ch

• 14-bit PWM output capability with the voltage synthesizer type electronic tuner

• Buzzer output capability

•

Interrupt function with importance attached to applications

• For power-off detection

• For remote controlled reception

•

Product with an on-chip PROM :

PD75P216A,

PD75P218 (on-chip EPROM : WQFN package)

APPLICATION FIELD

VCR, CD player, ECR, etc.

The information in this document is subject to change without notice.

Document No. IC-2584D

(O. D. No. IC-7552D)

Date Published February 1994 P

Printed in Japan

The mark

shows major revised points.

PD75212A

CONTENTS

1. PIN CONFIGURATION (TOP VIEW) ......................................................................................................... 6

2. BLOCK DIAGRAM ...................................................................................................................................... 8

3. PIN FUNCTIONS ........................................................................................................................................ 9

3.1 PORT PINS ............................................................................................................................................................. 9

3.2 NON-PORT PINS .................................................................................................................................................. 10

3.3 PIN INPUT/OUTPUT CIRCUIT LIST .................................................................................................................... 11

3.4 UNUSED PINS TREATMENT .............................................................................................................................. 12

3.5 P00/INT4 PIN AND RESET PIN OPERATING PRECAUTIONS ......................................................................... 13

3.6 XT1, XT2 AND P50 PIN OPERATING PRECAUTIONS ..................................................................................... 13

4. MEMORY CONFIGURATION ................................................................................................................... 14

5. PERIPHERAL HARDWARE FUNCTIONS ................................................................................................. 17

5.1 PORTS .................................................................................................................................................................... 17

5.2 CLOCK GENERATOR ............................................................................................................................................ 18

5.3

5.4

5.5

5.6

BASIC INTERVAL TIMER ..................................................................................................................................... 19

WATCH TIMER ...................................................................................................................................................... 20

TIMER/EVENT COUNTER ................................................................................................................................... 21

TIMER/PULSE GENERATOR ............................................................................................................................... 22

5.7 SERIAL INTERFACE ............................................................................................................................................. 23

5.8 FIP CONTROLLER /DRIVER ................................................................................................................................ 25

5.9 POWER-ON FLAG (MASK OPTION) ................................................................................................................... 27

6. INTERRUPT FUNCTIONS ......................................................................................................................... 28

7. STANDBY FUNCTIONS ............................................................................................................................ 30

8. RESET FUNCTIONS .................................................................................................................................. 31

9. INSTRUCTION SET ................................................................................................................................... 34

10. MASK OPTION SELECTION .................................................................................................................... 43

11. APPLICATION BLOCK DIAGRAM ............................................................................................................ 44

11.1 VCR TIMER TUNER ............................................................................................................................................. 44

11.2 CD PLAYER .......................................................................................................................................................... 45

11.3 ECR ....................................................................................................................................................................... 45

12. ELECTRICAL SPECIFICATIONS ............................................................................................................... 46

13. CHARACTERISTIC CURVES .................................................................................................................... 59

14. PACKAGE INFORMATION ....................................................................................................................... 63

UPD75212AGF Related Products

	UPD75212AGF	UPD75212ACW	UPD75212A
Description	4-BIT SINGLE-CHIP MICROCOMPUTER	4-BIT SINGLE-CHIP MICROCOMPUTER	4-BIT SINGLE-CHIP MICROCOMPUTER

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