MC9S12XDT512CAA Freescale, MC9S12XDT512CAA Datasheet - Page 370
MC9S12XDT512CAA
Manufacturer Part Number
MC9S12XDT512CAA
Description
Manufacturer
Freescale
Datasheet
1.MC9S12XDT512CAA.pdf
(1348 pages)
Specifications of MC9S12XDT512CAA
Cpu Family
HCS12
Device Core Size
16b
Frequency (max)
40MHz
Interface Type
CAN/I2C/SCI/SPI
Total Internal Ram Size
32KB
# I/os (max)
59
Number Of Timers - General Purpose
12
Operating Supply Voltage (typ)
2.5/5V
Operating Supply Voltage (max)
2.75/5.5V
Operating Supply Voltage (min)
2.35/3.15V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
80
Package Type
PQFP
Program Memory Type
Flash
Program Memory Size
512KB
Lead Free Status / RoHS Status
Compliant
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Part Number:
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Chapter 8 Pulse-Width Modulator (S12PWM8B8CV1)
8.3.2.2
The starting polarity of each PWM channel waveform is determined by the associated PPOLx bit in the
PWMPOL register. If the polarity bit is one, 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 zero, the output starts
low and then goes high when the duty count is reached.
Read: Anytime
Write: Anytime
8.3.2.3
Each PWM channel has a choice of two clocks to use as the clock source for that channel as described
below.
Read: Anytime
Write: Anytime
370
PPOL[7:0]
Reset
Reset
Field
7–0
W
W
R
R
PPOL7
PCLK7
Pulse Width Channel 7–0 Polarity Bits
0 PWM channel 7–0 outputs are low at the beginning of the period, then go high when the duty count is
1 PWM channel 7–0 outputs are high at the beginning of the period, then go low when the duty count is
PWM Polarity Register (PWMPOL)
PWM Clock Select Register (PWMCLK)
0
0
7
7
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
reached.
reached.
PCLKL6
PPOL6
0
0
6
6
Figure 8-5. PWM Clock Select Register (PWMCLK)
Figure 8-4. PWM Polarity Register (PWMPOL)
Table 8-2. PWMPOL Field Descriptions
PPOL5
PCLK5
MC9S12XDP512 Data Sheet, Rev. 2.21
0
0
5
5
PPOL4
PCLK4
NOTE
0
0
4
4
Description
PPOL3
PCLK3
0
0
3
3
PPOL2
PCLK2
0
0
2
2
PPOL1
PCLK1
Freescale Semiconductor
0
0
1
1
PPOL0
PCLK0
0
0
0
0
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