MCIMX287CVM4B Freescale, MCIMX287CVM4B Datasheet - Page 48

• Manufacturer Part Number: MCIMX287CVM4B
• Manufacturer: Freescale

Specifications of MCIMX287CVM4B

• Lead Free Status / RoHS Status: Compliant

1
3.4.11
Figure 30
The PWM can be programmed to select one of two clock signals as its source frequency, xtal clock or
hsadc clock. The selected clock signal is passed through a prescaler before being input to the counter. The
output is available at the pulse width modulator output (PWMO) external pin.
PWM also supports MATT mode. In this mode, it can be programmed to select one of two clock signals
as its source frequency, 24-MHz or 32-KHz crystal clock. For a 32-KHz source clock input, the PWM
outputs the 32-KHz clock directly to PAD.
1
48
V
CL of PWMO = 30 pF
SJ10
SJ11
SJ12
SJ13
Ref No.
M –
ID
2a
2b
3a
3b
4a
4b
1
mid point voltage
TCK low to TDO data valid
TCK low to TDO high impedance
TRST assert time
TRST set-up time to TCK low
depicts the timing of the PWM, and
Pulse Width Modulator (PWM) Timing
PWM Source Clock
i.MX28 Applications Processor Data Sheet for Consumer Products, Rev. 0
System CLK frequency
PWM Output
Output setup time
Output delay time
Clock high time
Clock rise time
Clock low time
Clock fall time
Table 51. PWM Output Timing Parameter: Xtal clock
Parameter
Parameter
Table 50. SJC Timing Parameters (continued)
Figure 30. PWM Timing
1
4a
2a
Table 51
2b
lists the PWM timing characteristics.
Minimum
15.77
21
21
—
—
—
0
3a
Min.
100
40
—
—
1
All Frequencies
Maximum
24MHz
15.08
Max.
0.3
0.3
3b
—
—
—
44
44
—
—
4b
Freescale Semiconductor
Unit
MHz
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns
ns