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參數(shù)資料
| 型號： | T89C51RD2-RDTCM |
| 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, PQFP64 |
| 封裝： | VQFP-64 |
| 文件頁數(shù)： | 57/104頁 |
| 文件大?。?/td> | 798K |
| 代理商： | T89C51RD2-RDTCM |
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57
T89C51RD2
4243G
–
8051
–
05/03
Table 35.
Default Values
After programming the part by ISP, the BSB must be reset (00h) in order to allow the
application to boot at 0000h.
The content of the Software Security Byte (SSB) is described in
Table 30
and
Table 31
To assure code protection from a parallel access, the HSB must also be at the required
level.
The three lock bits provide different levels of protection for the on-chip code and data,
when programmed according to Table 31.
Table 36.
Program Lock bits of the SSB
Note:
Note:
Note:
Note:
U: unprogrammed or "one" level.
P: programmed or "zero" level.
X:do not care
WARNING: Security level 2 and 3 should only be programmed after Flash and code
verification.
Mnemonic
Default Value
BSB
Boot Status Byte
FFh
SBV
Software Boot Vector
FCh
HSB
Copy of the Hardware security byte
18h or 1Bh
SSB
Software Security Byte
FFh
Copy of the Manufacturer Code
58h
ATMEL Wireless and
Microcontrollers
Copy of the Device ID #1: Family Code
D7h
C51 X2, Electrically Erasable
Copy of the Device ID #2: memories size
and type
FCh
T89C51RD2
memories
size
Copy of the Device ID # 3: name and
revision
FFh
T89C51RD2
, revision 0
Program Lock Bits
Protection Description
Security
level
LB0
LB1
1
U
U
No program lock features enabled.
2
P
U
following commands are disabled:
- program byte
- program status byte and boot vector
- erase status byte and boot vector
3
X
P
Same as 2 and following commands also disabled:
- read byte
- read status byte and boot vector
- blank check
- program SSB level2
相關(guān)PDF資料 |
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| T89C51RD2-SMSIL | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-SMSIM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-SMUCM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T89C51RD2-SMUIM | 0 to 40 MHz Flash Programmable 8-bit Microcontroller |
| T8 | 8A TRIACS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T89C51RD2-RDTC-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-RDTIL | 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-RDTI-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-RDTIM | 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-RDTI-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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