TWR-ELEV Freescale Semiconductor, TWR-ELEV Datasheet - Page 28

• Manufacturer Part Number: TWR-ELEV
• Description: TOWER ELEVATOR BOARDS HARDWARE
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®r

Specifications of TWR-ELEV

• Accessory Type: 2 Elevator Boards
• Product: Microcontroller Modules
• Data Bus Width: 8 bit, 16 bit, 32 bit
• Core Processor: MCF51CN128
• Operating Supply Voltage: 1.8 V to 3.6 V
• Silicon Manufacturer: Freescale
• Core Architecture: Coldfire
• Core Sub-architecture: Coldfire V1
• Silicon Core Number: MCF51
• Silicon Family Name: Flexis - MCF51AC, MCF521x, MCF5301x
• Rohs Compliant: Yes
• For Use With/related Products: Freescale Tower System
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Electrical Characteristics
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.
28
No.
1
2
3
4
5
TPM Module Timing
C
D
D
D
D
D
External clock frequency
External clock period
External clock high time
External clock low time
Input capture pulse width
MCF51CN128 ColdFire Microcontroller Data Sheet, Rev. 4
TCLK
TPMCHn
TPMCHn
Function
Figure 22. Timer Input Capture Pulse
Figure 21. Timer External Clock
Table 18. TPM Input Timing
t
clkh
t
t
ICPW
ICPW
Symbol
t
TCLK
t
f
t
ICPW
TCLK
TCLK
t
t
clkh
clkl
t
clkl
Min
1.5
1.5
1.5
0
4
f
Max
Bus
—
—
—
—
Freescale Semiconductor
/4
Unit
t
t
t
t
Hz
cyc
cyc
cyc
cyc