MC68HC908MR16CFU Freescale Semiconductor, MC68HC908MR16CFU Datasheet - Page 136

• Manufacturer Part Number: MC68HC908MR16CFU
• Description: IC MCU 8MHZ 16K FLASH 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908MR16CFU

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 44
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Pulse-Width Modulator for Motor Control (PWMMC)
136
UP/DOWN COUNTER
UP/DOWN COUNTER
PWM VALUE = 3
PWM VALUE = 3
DEAD-TIME = 2
DEAD-TIME = 2
MODULUS = 4
MODULUS = 4
PWM1/PWM2
PWM1/PWM2
DEAD-TIME
DEAD-TIME
OUTCTL
OUTCTL
PWM1
PWM2
PWM1
PWM2
OUT1
OUT2
OUT1
OUT2
DEAD-TIME INSERTED AS PART OF
NORMAL PWM OPERATION AS
CONTROLLED BY CURRENT
SENSING AND PWM GENERATOR
Figure 12-23. Dead-Time Insertion During OUTCTL = 1
Figure 12-24. Dead-Time Insertion During OUTCTL = 1
2
2
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
DEAD-TIME INSERTED BECAUSE
WHEN OUTCTL WAS SET, THE
STATE OF OUT1 WAS SUCH THAT
PWM1 WAS DIRECTED TO TOGGLE
2
DEAD-TIME INSERTED DUE
TO SETTING OF OUT1 BIT
2
DEAD-TIME INSERTED
BECAUSE OUT1 TOGGLES,
DIRECTING PWM1 TO
TOGGLE
2
2
NO DEAD-TIME INSERTED
BECAUSE OUT1 IS NOT
TOGGLING
DEAD-TIME INSERTED
DUE TO CLEARING OF
OUT1 BIT
2
Freescale Semiconductor