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參數(shù)資料
| 型號： | T89C51RD2-RLTCM |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| 中文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | VQFP-44 |
| 文件頁數(shù)： | 60/104頁 |
| 文件大?。?/td> | 798K |
| 代理商： | T89C51RD2-RLTCM |
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60
T89C51RD2
4243G
–
8051
–
05/03
Functional Description
Figure 23.
Bootloader Functional Description
On the above diagram, the on-chip bootloader processes are:
ISP Communication Management
The purpose of this process is to manage the communication and its protocol between
the on-chip bootloader and a external device. The on-chip ROM implement a serial pro-
tocol (see section Bootloader Protocol). This process translate serial communication
frame (UART) into Flash memory acess (read, write, erase ...).
User Call Management
Several Application Program Interface (API) calls are available for use by an application
program to permit selective erasing and programming of Flash pages. All calls are made
through a common interface (API calls), included in the ROM bootloader. The program-
ming functions are selected by setting up the microcontroller
’
s registers before making a
call to a common entry point (0xFFF0). Results are returned in the registers. The
pur-
pose on this process is to translate the registers values into internal Flash Memory
Management.
Flash Memory Management
This process manages low level access to Flash memory (performs read and write
access).
ISP Communication
Management
User
Application
Specific Protocol
Communication
Management
Flash
Memory
Exernal Host with
Flash Memory
User Call
Management (API )
相關PDF資料 |
PDF描述 |
|---|---|
| T89C51RD2-RLTIL | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLTIM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLVCL | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLVCM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLVIL | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| T89C51RD2-RLTC-M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLTIL | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLTI-L | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLTIM | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RLTI-M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
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