PIC18F4539T-E/ML Microchip Technology, PIC18F4539T-E/ML Datasheet - Page 123

• Manufacturer Part Number: PIC18F4539T-E/ML
• Description: IC PIC MCU FLASH 12KX16 44QFN
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4539T-E/ML

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 24KB (12K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1408 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-QFN
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 1408 B
• Interface Type: I2C, SPI, AUSART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 16 bit
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: DV164005, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

14.4
The Motor Control kernel allows users to develop their
applications without having knowledge of motor con-
trol. The key parameters of the motor control kernel can
be set and read through the Application Program Inter-
face (API) methods discussed in the previous section.
The overall application can be thought of as a protocol
stack, as shown in Figure 14-3. In this case, the API
methods reside between the user’s application and the
ProMPT kernel, and are used to exchange parameter
values. The motor control kernel sets the PWM duty
cycles based on the inputs from the application
software.
A
Example 14-1. In this case, the motor will run at 20 Hz
for 10 seconds, accelerate to 60 Hz at the rate of
10 Hz/s, remain at 60 Hz for 20 seconds, and finally
stop.
EXAMPLE 14-1:
 2002 Microchip Technology Inc.
Void main()
{
}
typical
unsigned char i;
unsigned char j;
ProMPT_Init(0);
i = ProMPT_SetFrequency(10);
for (i=0;i<161;i++)
ProMPT_SetAccelRate(10);
i = ProMPT_SetFrequency(60);
for (i=0;i<161;i++)
i = ProMPT_SetFrequency(0);
while(1);
Developing Applications Using
the Motor Control Kernel
{
j = ProMPT_Tick(void);
ProMPT_ClearTick(void);
}
{
j = ProMPT_Tick(void);
ProMPT_ClearTick(void);
j = ProMPT_Tick(void);
ProMPT_ClearTick(void);
}
motor
control
MOTOR CONTROL ROUTINE USING THE ProMPT APIs
routine
is
shown
Preliminary
// Initialize the ProMPT block
// Set motor frequency to 10Hz
// Set counter for 10 sec @ 1/16 sec per tick
// Tick of 1/16 sec
// Clearing the Tick flag
// Set acceleration rate to 10 Hz/sec
// Set motor frequency to 60 Hz
// Set counter for 20 Sec @ 1/16 sec per tick
// (2 loops of 10 Sec each)
// Tick of 1/16 Sec
// Clearing the Tick flag
// Tick of 1/16 Sec
// Clearing the Tick flag
// Set motor frequency to 0 Hz (stop)
// End of the task
in
FIGURE 14-3:
Application Software
Application Program
and User Interface
ProMPT Motor
Interface (API)
Control Kernel
PIC18FXX39
Hardware
LAYERS OF THE
MOTOR CONTROL
ARCHITECTURE STACK
Methods
Parameters
DS30485A-page 121