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參數資料
| 型號： | W77E58P-25 |
| 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, 25 MHz, MICROCONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數： | 75/85頁 |
| 文件大小： | 570K |
| 代理商： | W77E58P-25 |
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Preliminary W77E58
Publication Release Date: March 1999
- 75 - Revision A1
B0:Lock bit
This bit is used to protect the customer's program code in the W77E58. It may be set after the
programmer finishes the programming and verifies sequence. Once this bit is set to logic 0, both the
MTP ROM 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 Feature
Both the Seed 0 and Seed 1 are a one-byte flash memory cell that provide the user with encryption
code protection. When program code is programmed to the W77E58 internal MTP ROM and verify it
is correct, then users can program a non-FFh value into either Seed 0 or Seed 1 to start the
encryption logic. When Seed 0 or Seed 1 is presented in non-FFh state, the internal encryption circuit
will generate a sequence of random values, then add to each the program code bytes before they
appear in the data bus. Now the code is scrambled during the read or verify operation. The Seed 0
and Seed 1 have the initial value FFh after chip erased. When the encryption logic is effective, the
user can not disable it except by erasing the chip to recover the Seed 0 and 1 to initial value FFh.
The method for programming Seed 0 and Seed 1 is the same as that used to program internal MTP
ROM, except that the address of Seed 0 is 0FF7Fh, and Seed 1 is 0FF3Fh. When B2 bit is cleared,
Seed 0 and Seed 1 can not be accessed.
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
CONDITION
RATING
UNIT
DC Power Supply
V
DD
V
SS
-0.3
+7.0
V
Input Voltage
V
IN
V
SS
-0.3
V
DD
+0.3
V
Operating Temperature
T
A
0
+70
°
C
°
C
Storage Temperatute
Tst
-55
+150
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
of the device.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W77E58P-40 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER |
| W77I058A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77I058A25DL | 功能描述:IC MCU 8-BIT 32K FLASH 40-DIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W77 標準包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設備:POR，PWM，WDT 輸入/輸出數:40 程序存儲器容量:- 程序存儲器類型:ROMless 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:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR) |
| W77I058A25PL | 功能描述:IC MCU 8-BIT 32K FLASH 44-PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W77 標準包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設備:POR，PWM，WDT 輸入/輸出數:40 程序存儲器容量:- 程序存儲器類型:ROMless 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:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR) |
| W77IC32 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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