AT89C51ED2-RDTUM datasheet(109/137 Pages) ATMEL

Part #	AT89C51ED2-RDTUM

Description	8-bit Flash Microcontroller

PDF	137 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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109 / 137 page

109

4235K–8051–05/08

AT89C51RD2/ED2

24.9.7

Display Data Description

Figure 24-11. Display Flow

24.9.7.1

Example

24.9.8

Read Function Description

This flow is similar for the following frames:

Host

Bootloader

Display Command

’X’ & CR & LF

RD_WR_SECURITY

Wait Display Command

Read Data

Send Security Error

Send Display Data

Send Display Command

Wait Checksum Error

Wait Display Data

Wait Security Error

COMMAND ABORTED

COMMAND FINISHED

Send Checksum Error

COMMAND ABORTED

’L’ & CR & LF

"Address = "

All Data Read

Complet Frame

"Reading Value"

CR & LF

All Data Read

COMMAND FINISHED

Checksum error

HOST

: 05 0000 04 0000 0020 00 D7

BOOTLOADER

: 05 0000 04 0000 0020 00 D7

BOOTLOADER

0000=-----data------ CR LF (16 data)

BOOTLOADER

0010=-----data------ CR LF (16 data)

BOOTLOADER

0020=data CR LF

( 1 data)

Display data from address 0000h to 0020h

AT89C51ED2-RDTUM Datasheet(PDF) 109 Page - ATMEL Corporation

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