MC9S12C128VFU Freescale Semiconductor, MC9S12C128VFU Datasheet - Page 374
MC9S12C128VFU
Manufacturer Part Number
MC9S12C128VFU
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S12C128VFU.pdf
(690 pages)
Specifications of MC9S12C128VFU
Cpu Family
HCS12
Device Core Size
16b
Frequency (max)
25MHz
Interface Type
CAN/SCI/SPI
Program Memory Type
Flash
Program Memory Size
128KB
Total Internal Ram Size
4KB
# I/os (max)
60
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
2.5/5V
Operating Supply Voltage (max)
2.75/5.5V
Operating Supply Voltage (min)
2.35/2.97V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 105C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
80
Package Type
PQFP
Lead Free Status / Rohs Status
Not Compliant
Available stocks
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MC9S12C128VFUE
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Chapter 12 Pulse-Width Modulator (PWM8B6CV1) Block Description
12.4.1.3
Each PWM channel has the capability of selecting one of two clocks. For channels 0, 1, 4, and 5 the clock
choices are clock A or clock SA. For channels 2 and 3 the choices are clock B or clock SB. The clock
selection is done with the PCLKx control bits in the PWMCLK register.
12.4.2
The main part of the PWM module are the actual timers. Each of the timer channels has a counter, a period
register and a duty register (each are 8 bit). The waveform output period is controlled by a match between
the period register and the value in the counter. The duty is controlled by a match between the duty register
and the counter value and causes the state of the output to change during the period. The starting polarity
of the output is also selectable on a per channel basis.
374
Clock Source
PWMEx
(clock edge sync)
PWM Channel Timers
Clock Select
GATE
Changing clock control bits while channels are operating can cause
irregularities in the PWM outputs.
up/down
reset
Figure 12-35. PWM Timer Channel Block Diagram
8-Bit Counter
PWMCNTx
Q
Q
T
R
MC9S12C-Family / MC9S12GC-Family
Rev 01.24
NOTE
Figure 12-35
8-Bit Compare =
8-Bit Compare =
PWMDTYx
PWMPERx
CAEx
shows a block diagram for PWM timer.
T
R
Q
Q
PPOLx
M
U
X
From Port PWMP
Data Register
Freescale Semiconductor
M
U
X
To Pin
Driver
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