AT89C51RC2-3CSCM(2003) データシートの表示（PDF） - Atmel Corporation

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AT89C51RC2-3CSCM
(Rev.:2003)

8-bit Microcontroller with 16K/32K Bytes Flash

Atmel Corporation 

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 35. Diagram Context Description

Acronyms

Access via

Specific

Protocol

Access From

User

Application

Bootloader

ISP: In-system Programming

SBV: Software Boot Vector

BSB: Boot Status Byte

SSB: Software Security Bit

HW : Hardware Byte

Flash Memory

89

4180B–8051–04/03

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