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參數資料
| 型號： | W79E201 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數： | 66/87頁 |
| 文件大小： | 818K |
| 代理商： | W79E201 |
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W79E201
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20. SECURITY BITS
Using device programmer, the Flash EPROM can be programmed and verified repeatedly. Until the
code inside the Flash EPROM is confirmed OK, the code can be protected. The protection of Flash
EPROM and those operations on it are described below. The W79E201 has Special Setting Register
which can be accessed by device programmer. The register can only be accessed from the Flash
EPROM operation mode. Those bits of the Security Registers can not be changed once they have
been programmed from high to low. They can only be reset through erase-all operation.
B2: 0 -> Encryption
B1: 0 -> MOVC Inhibuted
B0: 0 -> Data out lock
Default 1 for each bit.
B0
B1
Security Bits
B2
B3
Reserved
B3: 0 -> Enable H/W reboot with P4.0
B0: Lock bit
This bit is used to protect the customer's program code in the W79E201. It may be set after the
programmer finishes the programming and verifies sequence. Once this bit is set to logic 0, both the
Flash EPROM data and Special Setting Registers can not be accessed again.
B1: MOVC Inhibit
This bit is used to restrict the accessible region of the MOVC instruction. It can prevent the MOVC
instruction in external program memory from reading the internal program code. When this bit is set to
logic 0, a MOVC instruction in external program memory space will be able to access code only in the
external memory, not in the internal memory. A MOVC instruction in internal program memory space
will always be able to access the ROM data in both internal and external memory. If this bit is logic 1,
there are no restrictions on the MOVC instruction.
B2: Encryption
This bit is used to enable/disable the encryption logic for code protection. Once encryption feature is
enabled, the data presented on port 0 will be encoded via encryption logic. Only whole chip erase will
reset this bit.
B3: H/W Reboot with P4.0
If this bit is set to logic 0, enable to reboot 4k LD Flash EPROM mode while RST =H and P4.0 = L
state. CPU will start from LD Flash EPROM to update the user’s program
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相關代理商/技術參數 |
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| W79E201A16FL | 功能描述:IC MCU 8-BIT 16K FLASH 44-PQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W79 標準包裝:300 系列:78K0R/Ix3 核心處理器:78K/0R 芯體尺寸:16-位 速度:40MHz 連通性:3 線 SIO，I²C，LIN，UART/USART 外圍設備:DMA，LVD，POR，PWM，WDT 輸入/輸出數:27 程序存儲器容量:16KB（16K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數據轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:38-SSOP 包裝:托盤 |
| W79E201A16FN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W79E201A16LN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W79E201A16PL | 功能描述:IC MCU 8-BIT 16K FLASH 44-PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W79 標準包裝:300 系列:78K0R/Ix3 核心處理器:78K/0R 芯體尺寸:16-位 速度:40MHz 連通性:3 線 SIO，I²C，LIN，UART/USART 外圍設備:DMA，LVD，POR，PWM，WDT 輸入/輸出數:27 程序存儲器容量:16KB（16K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數據轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:38-SSOP 包裝:托盤 |
| W79E201A16PN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
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