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參數(shù)資料
| 型號(hào)： | T89C51RD2-3CSIL |
| 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, 25 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁(yè)數(shù)： | 54/104頁(yè) |
| 文件大?。?/td> | 798K |
| 代理商： | T89C51RD2-3CSIL |
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54
T89C51RD2
4243G
–
8051
–
05/03
these devices is similar to that used by EPROM 87C51 but it is not identical and the
commercially available programmers need to have support for the T89C51RD2.
The bootloader and the In Application Programming (IAP) routines are located in the last
kilobyte of the Flash, leaving 63k bytes available for the application with ISP.
Flash Registers and
Memory Map
The T89C51RD2 Flash memory uses several registers for his management:
Flash control register is used to select the Flash memory spaces and launch the
Flash programming sequence.
Hardware registers can only be accessed through the parallel programming modes
which are handled by the parallel programmer.
Software registers are in a special page of the Flash memory which can be
accessed through the API or with the parallel programming modes. This page,
called "Extra Flash Memory", is not in the internal Flash program memory
addressing space.
Flash Register
Figure 20.
FCON register
FCON (S:D1h)
Flash control register
Reset Value = xxxx 0000b
The Flash programming application note and API source code are available on request.
Hardware register
The only hardware register of the T89C51RD2 is called Hardware Security Byte (HSB).
After full Flash erasure, the content of this byte is FFh; each bit is active at low level.
7
6
5
4
3
2
1
0
FPL3
FPL2
FPL1
FPL0
FPS
FMOD1
FMOD0
FBUSY
Bit
Number
Bit
Mnemonic
Description
7-4
FPL3:0
Programming Launch command bits
Write 5h followed by Ah to launch the programming.
3
FPS
Flash Map Program Space
Clear to map the data space during MOVX
Set to map the Flash space during MOVX (write) or MOVC (read) instructions
(Write in the column latches)
2-1
FMOD1:0
Flash Mode
Select the addressed space
00: User (0000h-FFFFh)
01: XAF
10: Hardware byte
11: reserved
0
FBUSY
Flash Busy
Set by hardware when programming is in progress.
Clear by hardware when programming is done.
Can not be cleared by software
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|---|---|
| T89C51RD2-3CSIM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-DDVCM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RDTCL | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-RDTCM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-SMSIL | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T89C51RD2-3CSI-L | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-3CSIM | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-3CSI-M | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-3CTC-L | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:0 to 40MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-3CTC-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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