TWR-MCF51JE-KIT Freescale Semiconductor, TWR-MCF51JE-KIT Datasheet - Page 39

• Manufacturer Part Number: TWR-MCF51JE-KIT
• Description: TOWER SYSTEM KIT MCF51JE
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®, Flexis™r
• Type: MCUr

Specifications of TWR-MCF51JE-KIT

• Contents: 4 Boards, Cables, Documentation, DVD
• Data Bus Width: 32 bit
• Interface Type: RS-232, RS-485, Ethernet, CAN, USB
• Silicon Manufacturer: Freescale
• Core Architecture: Coldfire
• Core Sub-architecture: Coldfire V1
• Silicon Core Number: MCF51J
• Silicon Family Name: Flexis - MCF51JE
• Rohs Compliant: Yes
• For Use With/related Products: Freescale Tower System, MCF51JE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.12.2
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.
Freescale Semiconductor
#
1
2
3
4
5
TPM Timing
—
—
C
D
D
D
TPMxCLK
External clock frequency
External clock period
External clock high time
External clock low time
Input capture pulse width
TPMxCHn
TPMxCHn
Figure 14. Timer Input Capture Pulse
Figure 13. Timer External Clock
Preliminary — Subject to Change
Function
Table 21. TPM Input Timing
t
clkh
t
t
ICPW
ICPW
t
TPMext
Symbol
t
f
t
clkl
TPMext
TPMext
t
ICPW
t
t
clkh
clkl
Preliminary Electrical Characteristics
Min
1.5
1.5
1.5
dc
4
f
Max
Bus
—
—
—
—
/4
MHz
Unit
t
t
t
t
cyc
cyc
cyc
cyc
1-3