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參數(shù)資料
型號: W921E880
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-Bit Microcontroller(4位的微控制器)
中文描述: 4-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 25/62頁
文件大小: 511K
代理商: W921E880
W921E880
Publication Release Date: August 1997
- 25 -
Revision A1
When the COMPTR REG. bit0 is set by software, the comparator starts and bit2 of the COMPTR
REG will be set to "1" at the beginning. The comparator result will be stored in bit2 of the COMPTR
REG and will keep this value until bit0 of the COMPTR REG is set again. The only way to disable the
comparator is to reset bit0 of the COMPTR REG by software control.
The initial value of the COMPTR bit2 is "1", a falling edge of COMPTR bit2 will cause the comparator
interrupt to be active if the enable flag of the comparator interrupt is set.
Bit3 of the COMPTR REG controls the source of the input voltage reference (Iref). The input
reference voltage (Iref) comes from an external pin (P5.2/Vref) or from the D/A converter analog
signal output (P5.3/DAOUT).
10.11 Timer 0
3
There are four timers (TM0, TM1, TM2 and TM3) in this chip, and all are initialized at any time by
writing data into the TM0, TM1, TM2 and TM3 Set Reg.
TM0
can perform the following function:
1. 2
19 order divider
2. Auto-reload Timer
3. Watch-dog timer
Sys Clk.
Prescaler 11bits
"H"
TM0 Control Reg.
INTT0
WDT
STTM0 Control
Reg.
MUX
INT Control
Reg.
TM0 Set Reg.
(8 bits)
8 Order Divider
Low Speed
Clock
1/8
TM0 Low Speed Reg.
fsub
fsys
fsys1
fsys0
f
TM0
Prescaler 5 bits
"L"
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參數(shù)描述
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