MC94MX21DVKN3 Freescale, MC94MX21DVKN3 Datasheet - Page 45

• Manufacturer Part Number: MC94MX21DVKN3
• Manufacturer: Freescale

Specifications of MC94MX21DVKN3

• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

3.14
The PWM can be programmed to select one of two clock signals as its source frequency. The selected
clock signal is passed through a divider and a prescaler before being input to the counter. The output is
available at the pulse-width modulator output (PWMO) external pin.
Freescale Semiconductor
Ref No.
2a
2b
3a
3b
4a
4b
1
Pulse-Width Modulator
System CLK frequency
Clock high time
Clock low time
Clock fall time
Clock rise time
Output delay time
Output setup time
System Clock
Parameter
PWM Output
Table 29. PWM Output Timing Parameters
Figure 37. PWM Output Timing Diagram
MC94MX21 Technical Data, Rev. 1.5
Minimum
2a
12.29
9.91
9.37
8.71
0
–
–
4a
1.8 V ± 0.1 V
2b
Maximum
0.5
0.5
45
–
–
–
–
1
3a
Minimum
12.29
9.91
3.61
3.03
0
–
–
3.0 V ± 0.3 V
3b
4b
Maximum
0.5
0.5
45
–
–
–
–
Specifications
MHz
Unit
ns
ns
ns
ns
ns
ns
45