news.txt

来自「51代码综合,ISP,用于8051单片机应用编成」· 文本 代码 · 共 33 行

NEWS - bootload.hex - 0.2.1; Updated: 06 May 2000

               
ATMEL-Wireless and Microcontrollers 2000


DESCRIPTION
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This is the bootloader Rev 2.4 hex file for T89C51RD2 parts


DOWNLOAD
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This software program can download from the Atmel Wireless & Microcontroller website:
http://www.atmel-wm.com


CHANGES
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Rev 2.4 :
  - Autobaud process improvement
  - Troubles fixes from Rev 2.1:
       T01 ISP command Read Data
       Description: In response to an ISP command Read Data, the bootloader sends the last data
       frame with stuffing bytes (FFh) to keep 16-byte frame length.

       T02 SBV and BSB protection in ISP mode
       Description SBV and BSB modification are possible regardless of security level settings (SSB).

       T03 DISPLAY DEVICE DATA command cannot read one single byte
       Description If DISPLAY DEVICE DATA command is called with end address equal to start
       address, the bootloader enters into a never ending loop.