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參數(shù)資料
型號(hào): W921E840
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, PDIP40
封裝: DIP-40
文件頁數(shù): 28/64頁
文件大小: 603K
代理商: W921E840
W921E840
- 28 -
6.11 Timer/Counter
There are four timers (TM0, TM1, TM2 and TM3) in this chip, and all can be initialized at any time by
writing data into the TM0, TM1, TM2 and TM3 set register.
6.11.1 TM0
TM0 can perform the following functions:
1. 2 to19 order divider
2. Auto-reload timer
3. Watch-dog timer
TM0 Control
Register
TM0 Interrupt
Logic
Watch Dog
Timer
TM0 Control
Logic
Interrupt Control
Register
TM0 Set Register
(8 bits)
8 Order Divider
MUX0'
f
TM0
MUX0
5-bit Prescaler
Low Speed
Clock (1/8)
f
SUB
f
SYS1
f
SYS0
TM0 Low Speed
Register
System
Clock
f
SYS
11-bit Prescaler
(NA8022002 only)
The format of the TM0 control register (TM0CR) is described below:
TM0CR register: (address = 020H, default data = 0H)
b3
b2
b1
b0
b1
b0
Input frequency (f )
0
0
0
1
1
0
1
1
fsys/2 Hz
fsys/256 Hz
fsys/1024 Hz
fsys/2048 Hz
Reserved
Reserved
相關(guān)PDF資料
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