Panasonic MN101L Series

Chapter 9
16-bit Timer
16-bit High-Precision IGBT Output (with Variable Period/Duty) IX - 57
9.10.2 Setup Example
 High-Precision IGBT Output Setup Example
Here is an example that, using Timer 7 with HCLK (f
HCLK
= 10 MHz) as clock source, the IGBT output wave-
form with the 1/4 duty cycle and 400 Hz is output from TM7IOA output pin using the external interrupt 0 input
signal as a trigger.
The setup procedure and its description are shown below.
Figure:9.10.7 Output Waveform of TM7IO output pin
Step Setting Register Description
1 Disable the timer counter TM7MD.TM7EN = 0 Disable the timer count operation.
2 Select the IGBT output pin TMIOEN1.TM7OEN = 1
TMIOEN1.TM8OEN = 1
Select the IGBT output pin.
[Chapter 7 I/O Port]
3 P0DIR.P0DIR4 = 1
P5DIR.P5DIR7 = 1
4 Set the timer mode register TM7MD3.T7IGBTEN = 1
TM7MD2.TM7PWM = 1
TM7MD1.TM7CL = 0
Enable the IGBT output.
5 TM8MD3.TM8SEL = 1 Select the IGBT output.
6 TM7MD2.TM7BCR = 0
TM7MD2.T7PWMSL = 1
Select the TM7BC clear source and the duty determination
source of IGBT output.
7 TM7MD4.T7NODED = 1 Select “No” as the dead time.
8 TM7MD3.T7IGBT1-0 = 01 Select the IGBT trigger source.
9 Set the external interrupt IRQ0ICR.REDG0 = 1 Set the external interrupt valid edge.
10 Set the timer mode register TM7MD3.T7IGBTTR = 0
TM7MD2.T7ICEDG0 = 1
Select the IGBT trigger level and IGBT trigger edge.
11 Set the external interrupt IRQISEL0.IRQ0SEL = 0
IRQIEN.IRQI0EN = 1
Enable the external interrupt pin.
12 Set the interrupt level IRQ0ICR.IRQ0LV1-0 Refer to [3.1.3 Maskable Interrupt Control Register Setup].
13 Enable the interrupt IRQ0ICR.IRQ0IE = 1
14 Set the timer mode register TM7MD1.TM7CK1-0 = 00
TM7MD1.TM7PS1-0 = 00
Select HCLK as the count clock source.
15 Set the IGBT output cycle TM7PR1 = 0x61A7 Set the IGBT output cycle.
Setup value: 25000 - 1 = 24999 (0x61A7)
16 Set the "High" period of IGBT TM7PR2 = 0x1869 Set the "High" period of IGBT output.
Setup value: 25000 / 4 - 1 = 6249 (0x1869)
17 Enable the timer counter TM7MD1.TM7EN = 1 Enable the timer count operation.
TM7IO output
IGBT trigger
400 Hz