HC705P6AGRSSLASHD datasheet(94/134 Pages) NXP

94 / 134 page

Mask Option Register (MOR)

General Release Specification

MC68HC705P6A — Rev. 1.0

Mask Option Register (MOR)

11.4 MOR Programming

The contents of the MOR should be programmed in bootloader mode

using the hardware shown in Figure 10-2. In order to allow

programming, all the implemented bits in the MOR are essentially read-

write bits in bootloader mode as shown in Figure 11-1.

The programming of the MOR is the same as user EPROM.

1. Set the ELAT bit in the EPROG register.

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

3. Set the EPGM bit in the EPROG.

4. Wait for the programming time (tEPGM).

5. Clear the ELAT and EPGM bits in the EPROG.

6. Remove the programming voltage from the IRQ/VPP pin.

A sample routine to program a byte of EPROM is shown in Table 11-2.

Once the MOR bits have been programmed, the options are not loaded

into the MOR registers until the part is reset.

Table 11-2. MOR Programming Routine

001C

00FF

0023

1EFF

1F00

0000

EPROG

DATA2

DATA1

MOR2

MOR1

EPGM

EQU

$1C

EQU

$FF

EQU

#23

EQU

$1EFF

EQU

$1F00

EQU

$00

PROGRAMMING REG

SAMPLE MOR VALUES

MOPR ADDRESSES

EPGM BIT IN EPROG REG

00E0

ORG

$E0

00E0

00E2

00E4

00E6

00E9

00EB

00ED

00EF

A6 04

B7 1C

A6 FF

C7 1E FF

12 1C

AD 03

3F 1C

LDA

#$04

STA

EPROG

LDA

#DATA2

STA

MOR2

BSET EPGM,EPROG

BSR

DELAY

CLR

EPROG

RTS

SET ELAT BIT

IN EPGM REG AT $1C

DATA BYTE

WRITE IT TO MOR LOC

TURN ON PGM VOLTAGE

WAIT 4 ms MINIMUM

CLR EPGM REGISTER

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

HC705P6AGRS/D 数据表(PDF) 94 Page - NXP Semiconductors

HC705P6AGRS/D 数据表(HTML) 94 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载

链接网址

HC705P6AGRS/D 数据表(PDF) 94 Page - NXP Semiconductors

HC705P6AGRS/D 数据表(HTML) 94 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表 下载

链接网址

数据表下载