AT89C51RB2/RC2
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
Access via
Specific
Protocol
Flash Memory
Bootloader
Access From
User
Application
Acronyms
ISP: In-system Programming
SBV: Software Boot Vector
BSB: Boot Status Byte
SSB: Software Security Bit
HW : Hardware Byte
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4180E–8051–10/06