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參數(shù)資料
型號: W79E804
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(shù): 106/115頁
文件大小: 1456K
代理商: W79E804
W79E804A/803A/802A
- 106 -
26. CONFIG BITS
The W79E804 series have two CONFIG bits (CONFIG1, CONFIG2) that must be define at power up
and can not be set after the program start of execution. Those features are configured through the use
of two flash EPROM bytes, and 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 (CONFIG2) and those operations on it are described below. The data of these bytes may be
read by the MOVX instruction at the addresses.
26.1 CONFIG1
BIT
NAME
FUNCTION
7
WDTE
Clock source of Watchdog Timer select bit:
0: The internal RC oscillator clock is for Watchdog Timer clock used.
1: The uC clock is for Watchdog Timer clock used.
Reset Pin Disable bit:
0: Enable Reset function of Pin 1.5.
1: Disable Reset function of Pin 1.5, and it to be used as an input port pin.
Port Reset High or Low bit:
0: Port reset to low state.
1: Port reset to high state.
Brownout Voltage Select bit:
0: Brownout detect voltage is 3.8V.
1: Brownout detect voltage is 2.5V.
Reserved.
Reserved.
CPU Oscillator Type Select bit 1
CPU Oscillator Type Select bit 0
6
RPD
5
PRHI
4
BOV
3
2
1
0
-
-
Fosc1
Fosc0
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