at89c51rd2-smsum ATMEL Corporation, at89c51rd2-smsum Datasheet - Page 110
at89c51rd2-smsum
Manufacturer Part Number
at89c51rd2-smsum
Description
8-bit Flash Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51RD2-SMSUM.pdf
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Figure 24-12. Read Flow
24.9.8.1
24.9.9
Table 24-9.
110
Command
00h
AT89C51RD2/ED2
COMMAND FINISHED
ISP Commands Summary
Wait Value of Data
Example
ISP Commands Summary
Send Read Command
Command Name
Program Code
OR
Host
OR
COMMAND ABORTED
Wait Checksum Error
COMMAND ABORTED
Wait Security Error
• Reading Frame
• EOF Frame/ Atmel Frame (only reading Atmel Frame)
Read function (read SBV)
Atmel Read function (read Bootloader version)
HOST
BOOTLOADER
HOST
BOOTLOADER
Data[0]
’value’ & ’.’ & CR & LF
Read Command
’X’ & CR & LF
’L’ & CR & LF
: 02 0000 05 07 02 F0
: 02 0000 05 07 02 F0 Value . CR LF
: 02 0000 01 02 00 FB
: 02 0000 01 02 00 FB Value . CR LF
Data[1]
Bootloader will accept up to 128 (80h) data bytes. The data
Send Checksum error
Send Security error
bytes should be 128 byte page flash boundary.
Bootloader
Program Nb Code Byte.
Wait Read Command
Command Effect
RD_WR_SECURITY
Send Data Read
Checksum error
Read Value
4235J–8051–01/08
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