參數(shù)資料
型號(hào): MCF51AC128CVPUE
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 50.33 MHz, MICROCONTROLLER, PQFP64
封裝: 10 X 10 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, MS-026BCD, LQFP-64
文件頁數(shù): 25/46頁
文件大?。?/td> 1036K
代理商: MCF51AC128CVPUE
Electrical Characteristics
MCF51AC256 ColdFire Microcontroller Data Sheet, Rev.4
Freescale Semiconductor
31
2.11.2
Timer (TPM/FTM) Module 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 11. Timer External Clock
Figure 12. Timer Input Capture Pulse
2.11.3
MSCAN
Table 18. TPM/FTM Input Timing
NUM
C
Function
Symbol
Min
Max
Unit
1—
External clock frequency
fTPMext
DC
fBus/4
MHz
2—
External clock period
tTPMext
4—
tcyc
3D
External clock high time
tclkh
1.5
tcyc
4D
External clock low time
tclkl
1.5
tcyc
5D
Input capture pulse width
tICPW
1.5
tcyc
Table 19. MSCAN Wake-Up Pulse Characteristics
Num
C
Parameter
Symbol
Min
Typical1
1 Typical values are based on characterization data at V
DD = 5.0 V, 25 °C unless otherwise stated.
Max
Unit
1
D
MSCAN wake-up dominant pulse filtered
tWUP
——
2
μs
2
D
MSCAN wake-up dominant pulse pass
tWUP
5—
5
μs
tTPMext
tclkh
tclkl
TPMxCLK
tICPW
TPMxCHn
tICPW
TPMxCHn
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