MC68HC908MR8CP Freescale Semiconductor, MC68HC908MR8CP Datasheet - Page 139

• Manufacturer Part Number: MC68HC908MR8CP
• Description: IC MCU 8K FLASH 8MHZ PWM 28-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908MR8CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 12
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Technical Data — MC68HC908MR8
9.1 Contents
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
Section 9. Pulse-Width Modulator for Motor Control
9.2
9.3
9.4
9.4.1
9.4.2
9.5
9.5.1
9.5.2
9.6
9.6.1
9.6.2
9.6.3
9.6.4
9.7
9.7.1
9.7.2
9.7.3
9.8
9.9
9.10
9.11
9.12
9.12.1
9.12.2
9.12.3
9.12.4
Pulse-Width Modulator for Motor Control (PWMMC)
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141
Timebase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146
Output Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152
Fault Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161
Initialization and the PWMEN Bit. . . . . . . . . . . . . . . . . . . . .169
PWM Operation in Wait Mode . . . . . . . . . . . . . . . . . . . . . . .170
PWM Operation in Stop Mode . . . . . . . . . . . . . . . . . . . . . . .170
PWM Operation in Break Mode . . . . . . . . . . . . . . . . . . . . . .171
PWM Generators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148
Control Logic Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172
Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146
Prescaler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148
Load Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148
PWM Data Overflow and Underflow Conditions . . . . . .152
Selecting Six Independent PWMs or Three
Complementary PWM Pairs. . . . . . . . . . . . . . . . . . . . . . .152
Dead-Time Insertion. . . . . . . . . . . . . . . . . . . . . . . . . . . . .154
Output Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157
Output Port Control Register . . . . . . . . . . . . . . . . . . . . .159
Fault Condition Input Pins. . . . . . . . . . . . . . . . . . . . . . . .164
Software Output Disable . . . . . . . . . . . . . . . . . . . . . . . . .168
Output Port Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . .168
PWM Counter Registers . . . . . . . . . . . . . . . . . . . . . . . . .172
PWM Counter Modulo Registers. . . . . . . . . . . . . . . . . . .173
PWMx Value Registers. . . . . . . . . . . . . . . . . . . . . . . . . . .174
PWM Control Register 1 . . . . . . . . . . . . . . . . . . . . . . . . .175
(PWMMC)
Technical Data
139