HC705P6AGRSSLASHD datasheet(86/134 Pages) NXP

Nome de Peças	HC705P6AGRS/D

Descrição Electrónicos	The Motorola MC68HC705P6A is an EPROM version of the MC68HC05P6 microcontroller

PDF	134 Pages

Scroll/Zoom	100%

Fabricante Electrônico	NXP [NXP Semiconductors]

Página de início	http://www.nxp.com

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86 / 134 page

EPROM

General Release Specification

MC68HC705P6A — Rev. 1.0

EPROM

To program a byte of EPROM, manipulate the EPROG register as

follows:

1. Set the ELAT bit in the EPROG register.

2. Write the desired data to the desired EPROM address.

3. Set the EPGM bit in the EPROG register for the specified

programming time, t

EPGM

4. Clear the ELAT and EPGM bits in the EPROG register.

This sequence is also shown in the sample program listing in

Table 10-1.

Table 10-1. EPROM Programming Routine

001C

0055

0700

0000

EPROG

DATA

EPROM

EPGM

EQU $1C

EQU $55

EQU $700

EQU $00

PROGRAMMING REG

DATA VALUE

A SAMPLE EPROM ADX

EPGM BIT IN EPROG REG

00D0

ORG

$D0

00D0

00D2

00D4

00D6

00D9

00DB

00DD

00DF

A6 02

B7 1C

A6 55

C7 07 00

10 1C

AD 03

3F 1C

LDA

#$04

STA

EPROG

LDA

#DATA

STA

EPROM

BSET

EPGM, EPROG

BSR

DELAY

CLR

EPROG

RTS

SET LAT BIT IN EPROG

DATA BYTE

WRITE IT TO EPROM LOC

TURN ON PGM VOLTAGE

WAIT 4 ms MINIMUM

CLR LAT AND PGM BITS

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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