AT89C51ID2-SMSIM ATMEL [ATMEL Corporation], AT89C51ID2-SMSIM Datasheet - Page 128

• Manufacturer Part Number: AT89C51ID2-SMSIM
• Description: 8-bit Flash Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

Full Chip Erase
Checksum Error
128
AT89C51ID2
The ISP command "Full Chip Erase" erases all User Flash memory (fills with FFh) and
sets some bytes used by the bootloader at their default values:
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The Full Chip Erase does not affect the bootloader.
When a checksum error is detected send ‘X’ followed with CR&LF.
BSB = FFh
SBV = FCh
SSB = FFh and finally erase the Software Security Bits
4289A–8051–09/03