DEMO9S08QD4 Freescale Semiconductor, DEMO9S08QD4 Datasheet - Page 13

• Manufacturer Part Number: DEMO9S08QD4
• Description: BOARD DEMO FOR MC9S08QD FAMILY
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S08QD4

• Contents: Board, Cable, CD
• Processor To Be Evaluated: MC9S08QD
• Data Bus Width: 8 bit
• Interface Type: USB
• Silicon Manufacturer: Freescale
• Core Architecture: HCS08
• Core Sub-architecture: HCS08
• Silicon Core Number: MC9S08
• Silicon Family Name: S08QD
• Rohs Compliant: Yes
• For Use With/related Products: MC9S08QD2, MC9S08QD4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

It must be changed to:
The same changes apply if using the MC9S08QG8 device.
6
This is a description using the frequency and the duty cycle to know the position of a stepper motor in the
MC9S08QD4 and its PWM. This document allows reuse of the code between the MC9S08QD and the
MC9S08QG families with minimal hardware changes.
Besides using a PWM signal to control a stepper motor, this motor control technique can be applied to the
output of temperature sensors or pressure sensors.
This application note teaches how to drive a low current stepper motor. The code presented here can also
be ported to other 8-bit devices. For more information go to AN3325 — Designing for Migration among
8-pin, 8-bit MCUs.
Freescale Semiconductor
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•
TPM2C0SC = 0x04;
TPM2SC = 0x0F;
TPMC0SC = 0x04;
TPMSC = 0x0F;
For the MC9S08QG4, change the derivative file before compiling. There is no TPM2 module. The
code for all TPM2 statements must be changed to reflect TPM. For example:
The values for coil A and coil B are the same, therefore
port A and the pinout change. Replace PTA1, PTA2, PTA3 and PTA5, for PTA0, PTA1, PTA2, and
PTA3. See
Conclusions
PTAD=0x0A;
PTAD=0x09;
PTAD=0x05;
PTAD=0x06;
while(TPM2C0SC_CH0F!=1)
{
}
while(TPMC0SC_CH0F!=1)
{
}
;
;
Driving a Stepper Motor Based on the MC9S08QD4 and Other 8-bit Families, Rev. 0
Figure
11. The values previously used for port A now change:
/*input capture rising edge*/
/*interrupts disabled, counts each 32us*/
/*input capture rising edge*/
/*interrupts disabled, counts each 32us*/
0x0A;
0x28;
0x24;
0x06;
/*to wait the flag for rising edge*/
/*to wait the flag for rising edge*/
Table 1
does not change. The values for
Conclusions
13