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參數(shù)資料
| 型號： | TS80C32X2-LIA |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, 30 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 25/55頁 |
| 文件大小： | 596K |
| 代理商： | TS80C32X2-LIA |
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31
TS8xCx2X2
4184I–8051–02/08
TS80C52X2
ROM Structure
The TS80C52X2 ROM memory is divided in three different arrays:
the code array:8 Kbytes.
the encryption array:64 bytes.
the signature array:4 bytes.
ROM Lock System
The program Lock system, when programmed, protects the on-chip program against
software piracy.
Encryption Array
Within the ROM array are 64 bytes of encryption array that are initially unprogrammed
(all FF’s). Every time a byte is addressed during program verify, 6 address lines are
used to select a byte of the encryption array. This byte is then exclusive-NOR’ed
(XNOR) with the code byte, creating an encrypted verify byte. The algorithm, with the
encryption array in the unprogrammed state, will return the code in its original, unmodi-
fied form.
When using the encryption array, one important factor needs to be considered. If a byte
has the value FFh, verifying the byte will produce the encryption byte value. If a large
block (>64 bytes) of code is left unprogrammed, a verification routine will display the
content of the encryption array. For this reason all the unused code bytes should be pro-
grammed with random values. This will ensure program protection.
Program Lock Bits
The lock bits when programmed according to Table 19. will provide different level of pro-
tection for the on-chip code and data.
U: unprogrammed
P: programmed
Signature bytes
The TS80C52X2 contains 4 factory programmed signatures bytes. To read these bytes,
perform the process described in section 9.
Verify Algorithm
Refer to Section “Verify Algorithm”.
Table 19. Program Lock bits
Program Lock Bits
Protection Description
Security
level
LB1
LB2
LB3
1
U
No program lock features enabled. Code verify will still be
encrypted by the encryption array if programmed. MOVC instruction
executed from external program memory returns non encrypted
data.
2
P
U
MOVC instruction executed from external program memory are
disabled from fetching code bytes from internal memory, EA is
sampled and latched on reset.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS80C32X2-LIAB | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS80C32X2-LIAD | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS80C32X2-LIAR | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS80C32X2-LIB | 功能描述:IC MCU 8BIT 30/20MHZ 44-PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:80C 標(biāo)準(zhǔn)包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C，LIN，SPI，UART/USART，USI 外圍設(shè)備:欠壓檢測/復(fù)位，POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB（4K x 16） 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:帶卷 (TR) |
| TS80C32X2-LIBB | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
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