参数资料
型号: MC9S08MP12VWL
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 50.33 MHz, MICROCONTROLLER, PDSO28
封装: SOIC-28
文件页数: 22/36页
文件大小: 762K
代理商: MC9S08MP12VWL
Electrical Characteristics
MC9S08MP16 Series Data Sheet, Rev. 2
Freescale Semiconductor
29
Figure 19. FTM External Clock
Figure 20. FTM Input Capture Pulse
2.14.3
MTIM Module Timing
Synchronizer circuits determine the fastest clock that can be used as the optional external clock source to the MTIM timer
counter. These synchronizers operate from the current bus rate clock.
Figure 21. MTIM Timer External Clock
4
D
External clock low time
tclkl
0.75
tcyc
5
D
Input capture pulse width
tICPW
0.75
tcyc
1 The maximum external clock frequency is limited to 10MHz due to input filter characteristics.
Table 18. MTIM Input Timing
No.
C
Function
Symbol
Min
Max
Unit
1
D
External clock frequency
fTCLK
0fBus/4
Hz
2
D
External clock period
tTCLK
4—
tcyc
3
D
External clock high time
tclkh
1.5
tcyc
4
D
External clock low time
tclkl
1.5
tcyc
Table 17. FTM Input Timing (continued)
No.
C
Function
Symbol
Min
Max
Unit
tTCLK
tclkh
tclkl
TCLK
tICPW
FTMxCHn
tICPW
FTMxCHn
tTCLK
tclkh
tclkl
TCLK
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