UPD78P014 datasheet(21/64 Pages) RENESAS

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µPD78P014

PROM PROGRAMMING

The

µPD78P014 incorporates a 32K-byte PROM as program memory. When programming the µPD78P014, the

PROM programming mode is set by means of the VPP and RESET pins. For the connection of unused pins, see “PIN

CONFIGURATION (2) PROM programming mode”.

4.1

Operating Modes

When +5 V or +12.5 V is applied to the VPP pin and a low-level signal is applied to the RESET pin, the

µPD78P014

enters the programming mode. This is one of the operating modes shown in Table 4-1 below according to the setting

of the CE and OE pins.

Also, the PROM contents can be read by setting the read mode.

Data input

Data output

High-impedance

Data output

High-impedance

Operating Mode

L/H

Program write

Program verify

Program inhibit

Read

Output disable

Standby

Pins

Table 4-1. PROM Programming Operating Modes

RESET

VPP

VDD

D0 to D7

+6 V

+12.5 V

+5 V

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