参数资料
型号: MCF51MM128CMB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 50.33 MHz, MICROCONTROLLER, PBGA81
封装: 10 X 10 MM, ROHS COMPLIANT, MAPBGA-81
文件页数: 39/58页
文件大小: 609K
代理商: MCF51MM128CMB
Electrical Characteristics
Freescale Semiconductor
44
3.12.2
TPM Timing
Synchronizer circuits determine the shortest input pulses that can be recognized or the fastest clock that
can be used as the optional external source to the timer counter. These synchronizers operate from the
current bus rate clock.
Figure 13. Timer External Clock
Figure 14. Timer Input Capture Pulse
Table 22. TPM Input Timing
#
C
Function
Symbol
Min
Max
Unit
1
External clock frequency
fTPMext
dc
fBus/4
MHz
2
External clock period
tTPMext
4—
tcyc
3
D
External clock high time
tclkh
1.5
tcyc
4
D
External clock low time
tclkl
1.5
tcyc
5
D
Input capture pulse width
tICPW
1.5
tcyc
tTPMext
tclkh
tclkl
TPMxCLK
tICPW
TPMxCHn
tICPW
TPMxCHn
Freescale reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
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