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T89C51CC02_03 Datasheet(Hoja de datos) 3 Page - ATMEL Corporation

No. de Pieza. T89C51CC02_03
Descripción  CAN Microcontrollers
Descarga  29 Pages
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Fabricante  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
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 3 page
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3
4223B–CAN–12/03
ISP Communication
Management
The purpose of this process is to manage the communication and its protocol between
the on-chip bootloader and an external device (host). The on-chip bootloader imple-
ments a Serial protocol (see Section “Protocol”, page 9). This process translates serial
communication frames (UART) into Flash memory accesses (read, write, erase...).
User Call Management
Several Application Program Interface (API) calls are available to the application pro-
gram to selectively erase and program Flash pages. All calls are made through a
common interface (API calls) included in the bootloader. The purpose of this process is
to translate the application request into internal Flash Memory operations.
Flash Memory Management
This process manages low level accesses to the Flash memory (performs read and
write accesses).
Bootloader Configuration
Configuration and
Manufacturer Information
The table below lists Configuration and Manufacturer byte information used by the boot-
loader. This information can be accessed through a set of API or ISP commands.
Mnemonic
Description
Default Value
BSB
Boot Status Byte
FFh
SBV
Software Boot Vector
FCh
P1_CF
Port 1 Configuration
FEh
P3_CF
Port 3 Configuration
FFh
P4_CF
Port 4 Configuration
FFh
SSB
Software Security Byte
FFh
EB
Extra Byte
FFh
Manufacturer
58h
Id1: Family code
D7h
Id2: Product Name
BBh
Id3: Product Revision
FFh




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