MCHC912B32CFUE8 Freescale Semiconductor, MCHC912B32CFUE8 Datasheet - Page 129

• Manufacturer Part Number: MCHC912B32CFUE8
• Description: IC MCU 32K FLASH 8MHZ 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MCHC912B32CFUE8

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 768 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Cpu Family: HC12
• Device Core Size: 16b
• Frequency (max): 8MHz
• Interface Type: SCI/SPI
• Total Internal Ram Size: 1KB
• # I/os (max): 63
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• 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
• Package: 80PQFP
• Family Name: HC12
• Maximum Speed: 8 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 63
• Processor Series: HC912B
• Core: HC12
• Data Ram Size: 1 KB
• Maximum Clock Frequency: 8 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Development Tools By Supplier: M68EVB912B32E
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11.2.2 PWM Clock Select and Polarity Register
Read: Anytime
Write: Anytime
PCLK3 — PWM Channel 3 Clock Select Bit
PCLK2 — PWM Channel 2 Clock Select Bit
PCLK1 — PWM Channel 1 Clock Select Bit
PCLK0 — PWM Channel 0 Clock Select Bit
PPOL3 — PWM Channel 3 Polarity Bit
PPOL2 — PWM Channel 2 Polarity Bit
PPOL1 — PWM Channel 1 Polarity Bit
PPOL0 — PWM Channel 0 Polarity Bit
Depending on the polarity bit, the duty registers may contain the count of either the high time or the low
time. If the polarity bit is 0 and left alignment is selected, the duty registers contain a count of the low time.
If the polarity bit is 1, the duty registers contain a count of the high time.
Freescale Semiconductor
If a clock select is changed while a PWM signal is being generated, a truncated or stretched pulse may
occur during the transition.
0 = Clock B is the clock source for channel 3.
1 = Clock S1 is the clock source for channel 3.
0 = Clock B is the clock source for channel 2.
1 = Clock S1 is the clock source for channel 2.
0 = Clock A is the clock source for channel 1.
1 = Clock S0 is the clock source for channel 1.
0 = Clock A is the clock source for channel 0.
1 = Clock S0 is the clock source for channel 0.
0 = Channel 3 output is low at the beginning of the period, high when the duty count is reached.
1 = Channel 3 output is high at the beginning of the period, low when the duty count is reached.
0 = Channel 2 output is low at the beginning of the period, high when the duty count is reached.
1 = Channel 2 output is high at the beginning of the period, low when the duty count is reached.
0 = Channel 1 output is low at the beginning of the period, high when the duty count is reached.
1 = Channel 1 output is high at the beginning of the period, low when the duty count is reached.
0 = Channel 0 output is low at the beginning of the period, high when the duty count is reached.
1 = Channel 0 output is high at the beginning of the period, low when the duty count is reached.
Address: $0041
Reset:
Read:
Write:
Figure 11-5. PWM Clock Select and Polarity Register (PWPOL)
PCLK3
Bit 7
0
PCLK2
6
0
M68HC12B Family Data Sheet, Rev. 9.1
PCLK1
5
0
PCLK0
4
0
PPOL3
3
0
PPOL2
2
0
PPOL1
1
0
PWM Register Descriptions
PPOL0
Bit 0
0
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