參數(shù)資料
型號: MC68HC705C8ACS
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Microcontroller Unit
中文描述: 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER, CDIP40
封裝: WINDOWED, CERAMIC, DIP-40
文件頁數(shù): 80/108頁
文件大?。?/td> 718K
代理商: MC68HC705C8ACS
Multifunction Timer Module
MC68HC705KJ1 MC68HRC705KJ1 MC68HLC705KJ1 Data Sheet, Rev. 4.1
80
Freescale Semiconductor
Figure 9-2. Multifunction Timer Block Diagram
9.4 Interrupts
The following timer sources can generate interrupts:
Timer overflow flag (TOF) — The TOF bit is set when the first eight stages of the counter roll over
from $FF to $00. The timer overflow interrupt enable bit, TOIE, enables TOF interrupt requests.
Real-time interrupt flag (RTIF) — The RTIF bit is set when the selected RTI output becomes active.
The real-time interrupt enable bit, RTIE, enables RTIF interrupt requests.
C
TIMER COUNTER REGISTER
BITS [0:7] OF 15-STAGE
RIPPLE COUNTER
OVERFLOW
INTERNAL CLOCK
(XTAL
÷
2)
TIMER STATUS/CONTROL REGISTER
T
R
T
R
T
R
R
R
RTI RATE SELECT
÷
2
÷
2
÷
2
÷
2
÷
2
÷
2
÷
2
BITS [8:14] OF 15-STAGE RIPPLE COUNTER
÷
8
S
R
Q
INTERRUPT
REQUEST
COP RESET
I
RESET
RESET
RESET
RESET
÷
4
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