T89C51RD2-RDTIM datasheet(73/104 Pages) ATMEL

73 / 104 page

T89C51RD2

4243G–8051–05/03

ISP Commands Summary

Table 40. ISP Commands Summary

API Call Description

Several Application Program Interface (API) calls are available for use by an application

program to permit selective erasing and programming of Flash pages. All calls are made

through a common interface, PGM_MTP. The programming functions are selected by

setting up the microcontroller’s registers before making a call to PGM_MTP at FFF0h.

Results are returned in the registers.

When several Bytes have to be programmed, it is highly recommended to use the Atmel

API “PROGRAM DATA PAGE” call. Indeed, this API call writes up to 128 Bytes in a sin-

gle command.

All routines for software access are provided in the C Flash driver available at Atmel’s

web site.

Command

Command Name

Data[0]

Data[1]

Command Effect

00h

Program Data

Program Nb Data Byte.

Bootloader will accept up to 16 (10h)

data Bytes. The data Bytes should be

128 Byte page Flash boundary.

03h

Write Function

04h

00h

Erase SBV

05h

00h

Program SSB level 1

01h

Program SSB level 2

06h

00h

Program BSB (value to write in

data[2])

01h

Program SBV (value to write in

data[2])

07h

Full Chip Erase

04h

Display Function

Data[0:1] = start address

Data [2:3] = end address

Data[4] = 00h -> Display data

Data[4] = 01h -> Blank check

Display Data

Blank Check

05h

Read Function

00h

Manufacturer ID

01h

Device ID #1

02h

Device ID #2

03h

Device ID #3

07h

00h

Read SSB

01h

Read BSB

02h

Read SBV

03h

Read Hardware Byte Copy

08h

00h

Read Bootloader Version

0Eh

00h

Read Device Boot ID1

01h

Read Device Boot ID2

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