Atmel C51 Scheda Tecnica Pagina 91

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AT89C51RB2/RC2
4180E–8051–10/06
Bootloader Architecture
Introduction The bootloader manages a communication according to a specific defined protocol to
provide the whole access and service on Flash memory. Furthermore, all accesses and
routines can be called from the user application.
Figure 36. Diagram Context Description
Acronyms ISP: In-system Programming
SBV: Software Boot Vector
BSB: Boot Status Byte
SSB: Software Security Bit
HW : Hardware Byte
Bootloader
Flash Memo
ry
Access via
Specific
Protocol
Access From
User
Application
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