MC9S12E128CPV Freescale Semiconductor, MC9S12E128CPV Datasheet - Page 388
MC9S12E128CPV
Manufacturer Part Number
MC9S12E128CPV
Description
Microcontrollers (MCU) 16 Bit 16MHz
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S12E128CPV.pdf
(606 pages)
Specifications of MC9S12E128CPV
Data Bus Width
16 bit
Program Memory Type
Flash
Program Memory Size
128 KB
Data Ram Size
8 KB
Interface Type
SCI, SPI
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
92
Number Of Timers
16 bit
Operating Supply Voltage
3.135 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
LQFP-112
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
On-chip Dac
8 bit, 2 Channel
Lead Free Status / Rohs Status
No RoHS Version Available
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Quantity
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Part Number:
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Manufacturer:
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Chapter 12 Pulse-Width Modulator (PWM8B6CV1)
12.3.2.2
The starting polarity of each PWM channel waveform is determined by the associated PPOLx bit in the
PWMPOL register. If the polarity bit is 1, the PWM channel output is high at the beginning of the cycle
and then goes low when the duty count is reached. Conversely, if the polarity bit is 0 the output starts low
and then goes high when the duty count is reached.
Read: anytime
Write: anytime
388
PWME1
PWME0
PPOL5
PPOL4
PPOL3
Reset
Field
Field
1
0
5
4
3
W
R
Pulse Width Channel 1 Enable
0 Pulse width channel 1 is disabled.
1 Pulse width channel 1 is enabled. The pulse modulated signal becomes available at PWM, output bit 1 when
Pulse Width Channel 0 Enable
0 Pulse width channel 0 is disabled.
1 Pulse width channel 0 is enabled. The pulse modulated signal becomes available at PWM, output bit 0 when
Pulse Width Channel 5 Polarity
0 PWM channel 5 output is low at the beginning of the period, then goes high when the duty count is reached.
1 PWM channel 5 output is high at the beginning of the period, then goes low when the duty count is reached.
Pulse Width Channel 4 Polarity
0 PWM channel 4 output is low at the beginning of the period, then goes high when the duty count is reached.
1 PWM channel 4 output is high at the beginning of the period, then goes low when the duty count is reached.
Pulse Width Channel 3 Polarity
0 PWM channel 3 output is low at the beginning of the period, then goes high when the duty count is reached.
1 PWM channel 3 output is high at the beginning of the period, then goes low when the duty count is reached.
PWM Polarity Register (PWMPOL)
0
0
7
its clock source begins its next cycle.
its clock source begins its next cycle. If CON01 = 1, then bit has no effect and PWM output line 0 is disabled.
PPOLx register bits can be written anytime. If the polarity is changed while
a PWM signal is being generated, a truncated or stretched pulse can occur
during the transition
= Unimplemented or Reserved
0
0
6
Table 12-2. PWME Field Descriptions (continued)
Figure 12-4. PWM Polarity Register (PWMPOL)
Table 12-3. PWMPOL Field Descriptions
PPOL5
MC9S12E128 Data Sheet, Rev. 1.07
0
5
PPOL4
NOTE
0
4
Description
Description
PPOL3
0
3
PPOL2
0
2
PPOL1
Freescale Semiconductor
0
1
PPOL0
0
0
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