MC9S12HZ128VAL Freescale Semiconductor, MC9S12HZ128VAL Datasheet - Page 286

• Manufacturer Part Number: MC9S12HZ128VAL
• Description: IC MCU 16BIT 2K FLASH 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12HZ128VAL

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: CAN, EBI/EMI, I²C, SCI, SPI
• Peripherals: LCD, Motor control PWM, POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 6K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 112-LQFP
• Processor Series: S12H
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 6 KB
• Interface Type: I2C/SCI/SPI
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 85
• Number Of Timers: 8
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Chapter 9 Motor Controller (MC10B8CV1)
9.7
This section provides an example of how the PWM motor controller can be initialized and used by
application software. The configuration parameters (e.g., timer settings, duty cycle values, etc.) are not
guaranteed to be adequate for any real application.
The example software is implemented in assembly language.
9.7.1
One way to use the motor controller is:
The timer is disabled and the duty cycle registers are cleared to drive an inactive value on the PWM output
as long as the motor controller is enabled. The period register is cleared after a certain time, which disables
the motor controller. The table address is restored and the timer interrupt flag is cleared.
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1. Perform global initialization
2. Perform the startup phase
3. Main program
4. Sub program
a) Set the motor controller control registers MCCTL0 and MCCTL1 to appropriate values.
b) Configure the channel control registers for the desired mode.
a) Clear the duty cycle registers MCDC0 and MCDC1
b) Initialize the period register MCPER, which is equivalent to enabling the motor controller.
c) Enable the timer which generates the timebase for the updates of the duty cycle registers.
a) Check if pin PB0 is set to “1” and execute the sub program if a timer interrupt is pending.
b) Initiate the shutdown procedure if pin PB0 is set to “0”.
a) Update the duty cycle registers
b) Shutdown procedure
Initialization/Application Information
i) Prescaler disabled (MCPRE1 = 0, MCPRE0 = 0).
ii) Fast mode and dither disabled (FAST = 0, DITH = 0).
iii) Recirculation feature in dual full H-bridge mode disabled (RECIRC = 0).
All other bits in MCCTL0 and MCCTL1 are set to 0.
i) Dual full H-bridge mode (MCOM[1:0] = 11).
ii) Left aligned PWM (MCAM[1:0] = 01).
iii) No channel delay (MCCD[1:0] = 00).
Load the duty cycle registers MCDC0 and MCDC1 with new values from the table and clear
the timer interrupt flag.
The sub program will initiate the shutdown procedure if pin PB0 is set to “0”.
Code Example
MC9S12HZ256 Data Sheet, Rev. 2.05
Freescale Semiconductor