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PDF AT89C51SND1 Data sheet ( Hoja de datos )
| Número de pieza | AT89C51SND1 | |
| Descripción | MP3 Microcontrollers | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• Protocol
– UART Used as a Physical Layer
– Based on the Intel Hex-type Records
– Autobaud
• In-System Programming
– Read/Write Flash Memory
– Read Device IDs
– Block Erase
– Full-chip Erase
– Read/Write Configuration Bytes
– Security Setting From ISP Command
– Remote Application Start Command
• In-Application Programming/Self-Programming
– Read/Write Flash Memory
– Read Device IDs
– Block Erase
– Read/Write Configuration Bytes
– Bootloader Start
Description
This document describes the UART bootloader functionalities as well as the serial
protocol to efficiently perform operations on the on-chip Flash memory. Additional
information for the AT89C51SND1 product can be found in the AT89C51SND1 data
sheet and the AT89C51SND1 errata sheet available on the Atmel web site,
www.atmel.com.
The bootloader software package (source code and binary) currently used for produc-
tion is available from the Atmel web site.
MP3
Microcontrollers
AT89C51SND1
UART
Bootloader
Bootloader Revision
Revision 1.0.0
Revision 1.1.0
Purpose of Modifications
New release increasing programming
speed
Bug fix in boot process
Date
June 2002
October 2002
4241B–MP3–07/04
1
1 page  
AT89C51SND1 UART Bootloader
Figure 2. Software Boot Vector
Application
User Bootloader
[SBV]00h
UART Bootloader
FM1
FM0
FLIP Software Program
FLIP is a PC software program running under Windows® 9x//2000/XP, Windows NT®
and LINUX® that supports all Atmel Flash microcontrollers.
This free software program is available on the Atmel web site.
4241B–MP3–07/04
5
5 Page 
AT89C51SND1 UART Bootloader
Flow Description
Figure 6. Programming Command
Host
Send Write Command
Write Command
Bootloader
Wait Write Command
OR
Wait Checksum Error
COMMAND ABORTED
“X” & CR & LF
OR
Wait Security Error
COMMAND ABORTED
“P” & CR & LF
Wait COMMAND_OK
COMMAND FINISHED
“.” & CR & LF
Checksum Error
Send Checksum Error
NO_SECURITY
Send Security Error
Wait Programming
Send COMMAND_OK
Programming Example
Programming Data (write 55h at address 0010h in the Flash)
HOST
BOOTLOADER
: 01 0010 00 55 9A
: 01 0010 00 55 9A . CR LF
4241B–MP3–07/04
11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet AT89C51SND1.PDF ] | |
Hoja de datos destacado
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