UPD17P228 Ver la hoja de datos (PDF) - NEC => Renesas Technology

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Fabricante

UPD17P228

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

NEC => Renesas Technology 

µPD17P228

2.2 PROM Programming Mode

Pin No.

3

9

11

12

20



23

24



27

28

29

1

2

Symbol

VPP

VDD

CLK

GND

MD0



MD3

D4



D7

D0

D1

D2

D3

Function

Power supply for PROM programming.

Apply +12.5 V to this pin as the program voltage when writing/

verifying program memory.

Power supply. Apply +6 V to this pin when writing/verifying

program memory.

Inputs clock for PROM programming.

Ground.

Input pins used to select operation mode when PROM is

programmed.

Input/output 8-bit data for PROM programming

Output Format At Reset

–

–

–

–

–

–

–

–

–

Input

CMOS

push-pull

Input

Remark The other pins are not used in the PROM programming mode. How to handle the other opins are

described in the section PIN CONFIGURATION (2) PROM programming mode.

8

Data Sheet U14542EJ1V0DS00

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