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參數資料
| 型號： | W79E532A40PN |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數： | 60/77頁 |
| 文件大小： | 523K |
| 代理商： | W79E532A40PN |
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W79E532/W79L532
- 60 -
17. SECURITY BITS
1. 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 W79E(L)532 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.
If you needn’t have ISP function, please don’t fill “FF” code on LD memory. The writer always writes
AP and LD flashs every time.
B4 : 0 -> Enable H/W reboot with P2.6, P2.7
B1 : 0 -> MOVC Inhibited
B0 : 0 -> Data out lock
Default 1 for each bit.
B5 : 0 -> Eable H/W reboot with P4.3
B0
B1
Option Bits
Security Bits
B2
B3
B4
B5
B6
B7
B7 : 1 -> XT > 24M hz, 0: XT < 24M hz.
B0: Lock bit
This bit is used to protect the customer's program code in the W79E(L)532. 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.
B4: H/W Reboot with P2.6 and P2.7
If this bit is set to logic 0, enable to reboot 4k LDFlash mode while RST =H, P2.6 = L and P2.7 = L
state. CPU will start from LDFlash to update the user’s program.
B5: H/W Reboot with P4.3
If this bit is set to logic 0, enable to reboot 4k LDFlash mode while RST =H and P4.3 = L state. CPU
will start from LDFlash to update the user’s program
B7: Select clock freqency.
If clock freqency is over 24M hz, then set this bit is H. If clock frequency is less than 24M hz, then
clear this bit.
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相關代理商/技術參數 |
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| W79E548 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W79E548A40PL | 功能描述:IC MCU 8-BIT 64K FLASH 68-PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W79 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設備:POR，PWM，溫度傳感器，WDT 輸入/輸出數:21 程序存儲器容量:40KB（20K x 16） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| W79E548A40PN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W79E549 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W79E549A40PL | 功能描述:IC MCU 8-BIT 32K FLASH 68-PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W79 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設備:POR，PWM，溫度傳感器，WDT 輸入/輸出數:21 程序存儲器容量:40KB（20K x 16） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
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