- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄3838 > TSC80251G2D-L16CER (Atmel)IC MCU 8BIT 16MHZ LO VOLT 44VQFP PDF資料下載
參數(shù)資料
| 型號(hào)： | TSC80251G2D-L16CER |
| 廠商： | Atmel |
| 文件頁數(shù)： | 36/77頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU 8BIT 16MHZ LO VOLT 44VQFP |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 系列： | 8x251 |
| 核心處理器： | C251 |
| 芯體尺寸： | 8/16-位 |
| 速度： | 16MHz |
| 連通性： | EBI/EMI，I²C，Microwire，SPI，UART/USART |
| 外圍設(shè)備： | POR，PWM，WDT |
| 輸入/輸出數(shù)： | 32 |
| 程序存儲(chǔ)器類型： | ROMless |
| RAM 容量： | 1K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | 0°C ~ 70°C |
| 封裝/外殼： | 44-LQFP |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | TSC80251G2DL16CER |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁當(dāng)前第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁
41
AT/TSC8x251G2D
4135F–8051–11/06
Lock Bit System
The TSC87251G2D products implement 3 levels of security for User’s program as
described in Table 33. The TSC83251G2D products implement only the first level of
security.
Level 0 is the level of an erased part and does not enable any security features.
Level 1 locks the programming of the User’s internal Code Memory, the Configuration
Bytes and the Encryption Array.
Level 2 locks the verifying of the User’s internal Code Memory. It is always possible to
verify the Configuration Bytes and the Lock Bits. It is not possible to verify the Encryp-
tion Array.
Level 3 locks the external execution.
Table 33.
Lock Bits Programming
Notes: 1. Returns encrypted data if Encryption Array is programmed.
2. Returns non encrypted data.
3. x means don’t care. Level 2 always enables level 1, and level 3 always enables levels
1 and 2.
The security level may be verified according to Table 34.
Table 34.
Lock Bits Verifying
Note:
1. x means don’t care.
Encryption Array
The TSC83251G2D and TSC87251G2D products include a 128-byte Encryption Array
located in non-volatile memory outside the memory address space. During verification
of the on-chip code memory, the seven low-order address bits also address the Encryp-
tion Array. As the byte of the code memory is read, it is exclusive-NOR’ed (XNOR) with
the key byte from the Encryption Array. If the Encryption Array is not programmed (still
all 1s), the user program code is placed on the data bus in its original, unencrypted form.
If the Encryption Array is programmed with key bytes, the user program code is
encrypted and cannot be used without knowledge of the key byte sequence.
Level
Lock bits
LB[2:0]
Internal
Execution
External
Execution
Verification
Programming
External
PROM read
(MOVC)
0
000
Enable
Enable(1)
Enable
Enable(2)
1
001
Enable
Enable(1)
Disable
2
01x(3)
Enable
Disable
31xx(3)
Enable
Disable
Level
Lock bits Data
(1)
0
xxxxx000
1
xxxxx001
2
xxxxx01x
3
xxxxx1xx
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TSC87251G2D-L16CER | IC MCU 8BIT 32K OTP 16MHZ 44VQFP |
| PIC18F86K90-I/PTRSL | MCU PIC 64K FLASH XLP 80TQFP |
| 201692-4 | CONN HOUSING PLUG 104POS BLACK |
| 202800-2 | CONN HOUSING RECEPT 160POS BLACK |
| TS80C51RD2-MIB | IC MCU 8BIT 768BYTE 40MHZ 44PLCC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSC80251-SK | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8/16-bit Microcontroller with Serial Communication Interfaces |
| TSC8051C1-12CA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| TSC8051C1-12CB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| TSC8051C1-12CC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| TSC8051C1-12CE | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。