AT89C51IC2-SLSCM datasheet(124/146 Pages) ATMEL

124 / 146 page

124

AT89C51IC2

4301A–8051–01/04

Example

Read Function

This flow is similar for the following frames:

•

Reading Frame

•

EOF Frame/Atmel Frame (only reading Atmel Frame)

Description

Figure 52. Read Flow

Example

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

Host

Bootloader

Read Command

’X’ & CR & LF

RD_WR_SECURITY

Wait Read Command

Read Value

Send Security error

Send Data Read

Send Read Command

Wait Checksum Error

Wait Value of Data

Wait Security Error

COMMAND ABORTED

COMMAND FINISHED

Send Checksum error

COMMAND ABORTED

’L’ & CR & LF

’value’ & ’.’ & CR & LF

Checksum error

HOST

: 02 0000 05 07 02 F0

BOOTLOADER

: 02 0000 05 07 02 F0 Value . CR LF

HOST

: 02 0000 01 02 00 FB

BOOTLOADER

: 02 0000 01 02 00 FB Value . CR LF

Read function (read SBV)

Atmel Read function (read Bootloader version)

AT89C51IC2-SLSCM Datasheet(PDF) 124 Page - ATMEL Corporation

AT89C51IC2-SLSCM Datasheet(HTML) 124 Page - ATMEL Corporation

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