at89c51cc02ua-tdsum ATMEL Corporation, at89c51cc02ua-tdsum Datasheet - Page 39
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at89c51cc02ua-tdsum
Manufacturer Part Number
at89c51cc02ua-tdsum
Description
At89c51cc02, T89c51cc02 Enhanced 8-bit Microcontroller With Can Controller And Flash
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51CC02UA-TDSUM.pdf
(159 pages)
- Current page: 39 of 159
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Hardware Security Byte
4126L–CAN–01/08
Figure 15. Flash and Extra row Programming Procedure
The following procedure is used to program the Hardware
and is summarized in Figure 16:
•
•
•
•
•
•
•
Set FPS and map Hardware byte (FCON = 0x0C)
Save then disable the interrupts.
Load DPTR at address 0000h.
Load Accumulator register with the data to load.
Execute the MOVX @DPTR, A instruction.
Launch the programming by writing the data sequence 54h followed by A4h in
FCON register. This step of the procedure must be executed from FM1.
The end of the programming indicated by the FBusy flag cleared.
Restore the interrupts
Column Latches Loading
Launch Programming
End Programming
Save & Disable IT
Programming
Flash Spaces
See Figure 14
FCON = Axh
FCON = 5xh
FCON = 00h
Clear Mode
Cleared?
Restore IT
FBusy
EA = 0
AT/T89C51CC02
Security
Byte space
39
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