- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379184 > DS83C520 EPROM/ROM High-Speed Micro PDF資料下載
參數(shù)資料
| 型號(hào)： | DS83C520 |
| 英文描述： | EPROM/ROM High-Speed Micro |
| 中文描述： | EPROM/ROM高速微控制器 |
| 文件頁數(shù)： | 28/45頁 |
| 文件大?。?/td> | 1415K |
| 代理商： | DS83C520 |
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頁當(dāng)前第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第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
DS87C520/DS83C520 EPROM/ROM High-Speed Microcontrollers
28 of 45
Figure 5. EPROM Programming Configuration
ROM-SPECIFIC FEATURES
The DS83C520 supports a subset of the EPROM features found on the DS87C520.
SECURITY OPTIONS
Lock Bits
The DS83C520 employs a lock that restricts viewing of the ROM contents. When set, the lock will
prevent MOVC instructions in external memory from reading program bytes in internal memory. When
locked, the
EA
pin is sampled and latched on reset. The lock setting is enabled or disabled when the
devices are manufactured according to customer specifications. The lock bit cannot be read in software,
and its status can only be determined by observing the operation of the device.
Encryption Array
The DS83C520 Encryption Array allows an authorized user to verify ROM without allowing the true
memory contents to be dumped. During a verify, each byte is Exclusive NORed (XNOR) with a byte in
the Encryption Array. This results in a true representation of the ROM while the Encryption is
unprogrammed (FFh)
.
Once the Encryption Array is programmed in a non-FFh state, the Encryption
Array is programmed (or optionally left unprogrammed) when the devices are manufactured according to
customer specifications.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS83C520-ECL | EPROM/ROM High-Speed Micro |
| DS83C520-ENL | EPROM/ROM High-Speed Micro |
| DS83C520-MCL | EPROM/ROM High-Speed Micro |
| DS83C520-MNL | EPROM/ROM High-Speed Micro |
| DS83C520-QCL | EPROM/ROM High-Speed Micro |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS83C520_07 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM/ROM High-Speed Microcontrollers |
| DS83C520-C01+ | 制造商:Maxim Integrated Products 功能描述:EPROM/ROM HIGH-SPEED MICROCONTROLLERS - Rail/Tube |
| DS83C520-C03+T&R | 制造商:Maxim Integrated Products 功能描述:EPROM/ROM HIGH-SPEED MICROCONTROLLERS - Tape and Reel |
| DS83C520-ECL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM/ROM High-Speed Micro |
| DS83C520-ECL+ | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:EPROM/ROM High-Speed Microcontrollers |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。