参数资料
型号: MC68HC908JL8MFAE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP32
封装: PLASTIC, LQFP-32
文件页数: 25/56页
文件大小: 648K
代理商: MC68HC908JL8MFAE
MC68HC908JL8SM/D
Timer Interface Modules (TIM1 and TIM2)
MC68HC908JL8MC68HC908JK8
MSxB, MSxA, ELSxB, and ELSxA
TOVx — Toggle-On-Overflow Bit
1 = Channel x pin toggles on TIM counter overflow.
NOTE:
When TOVx is set, a TIM counter overflow takes precedence over a channel x
output compare if both occur at the same time.
CHxMAX — Channel x Maximum Duty Cycle Bit
When the TOVx bit is at logic 1, setting the CHxMAX bit forces the duty cycle
of buffered and unbuffered PWM signals to 100%. The CHxMAX bit takes
effect in the cycle after it is set or cleared. The output stays at the 100% duty
cycle level until the cycle after CHxMAX is cleared.
Figure 24. CHxMAX Latency
Table 7. Mode, Edge, and Level Selection
MSxB
MSxA
ELSxB
ELSxA
Mode
Configuration
X0
0
Output preset
Pin under port control;
initial output level high
X1
0
Pin under port control;
initial output level low
00
0
1
Input capture
Capture on rising edge only
0
1
0
Capture on falling edge only
0
1
Capture on rising or falling edge
01
0
1
Output compare
or PWM
Toggle output on compare
0
1
0
Clear output on compare
0
1
Set output on compare
1
X
0
1
Buffered
output
compare or
buffered PWM
Toggle output on compare
1
X
1
0
Clear output on compare
1
X
1
Set output on compare
OUTPUT
OVERFLOW
TCHx
PERIOD
CHxMAX
OVERFLOW
COMPARE
OUTPUT
COMPARE
OUTPUT
COMPARE
OUTPUT
COMPARE
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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