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參數資料
| 型號： | TS87C52X2-MIKB |
| 英文描述： | RCD, 100A 4 POLERCD, 100A 4 POLE; Current rating:100A; Current, tripping:30mA; Poles, No. of:4 |
| 中文描述： | 8位CMOS微控制器0-60兆赫 |
| 文件頁數： | 33/54頁 |
| 文件大?。?/td> | 626K |
| 代理商： | TS87C52X2-MIKB |
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Rev. B - Jan. 25, 1999
33
Preliminary
TS80C52X2
7. TS80C52X2
7.1 ROM Structure
The TS80C52X2 devices are divided in three different arrays:
G
the code array: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Kbytes.
G
the encryption array:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 bytes.
G
the signature array:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 bytes.
7.2 ROM Lock System
The program Lock system, when programmed, protects the on-chip program against software piracy.
7.2.1 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, unmodified 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 programmed with random values. This will ensure program protection.
7.2.2 Program Lock Bits
The lock bits when programmed according to Table 18. will provide different level of protection for the on-chip
code and data.
Table 18. Program Lock bits
U: unprogrammed
P: programmed
7.2.3 Signature bytes
The TS80C52X2 contains 4 factory programmed signatures bytes. To read these bytes, perform the process described
in section 9.
Program Lock Bits
Protection description
Security
level
LB1
LB2
LB3
1
U
U
U
No program lock features enabled. Code verify will still be encrypted by the encryption
arrayifprogrammed.MOVCinstruction executedfromexternalprogrammemoryreturns
non encrypted data.
2
P
U
U
MOVC instruction executed from external program memory are disabled from fetching
code bytes from internal memory, EA is sampled and latched on reset.
相關PDF資料 |
PDF描述 |
|---|---|
| TS87C52X2-MIKD | RCBO, SP, 10A, 0.1A, TYPE-C; Current rating:10A; Sensitivity:100 mA; Tripping characteristic:Type C RoHS Compliant: Yes |
| TS87C52X2-MIKR | 8-bit CMOS Microcontroller 0-60 MHz |
| TS87C52X2-MIJB | 8-bit CMOS Microcontroller 0-60 MHz |
| TS87C52X2-MIJD | 8-bit CMOS Microcontroller 0-60 MHz |
| TS87C52X2-MIJR | 8-bit CMOS Microcontroller 0-60 MHz |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TS87C52X2-MIKD | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS87C52X2-MIKR | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS87C52X2-SLSUM | 制造商:Atmel Corporation 功能描述:MCU 8BIT TS87 CISC 8KB EPROM 44PLCC - Rail/Tube |
| TS87C52X2-VCA | 功能描述:IC MCU 8BIT 8K OTP 40MHZ 40-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:87C 標準包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設備:POR，WDT 輸入/輸出數:32 程序存儲器容量:32KB（32K x 8） 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數據轉換器:- 振蕩器型:內部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP（0.600"，15.24mm） 包裝:管件 |
| TS87C52X2-VCAB | 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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