Datasheet

1025
SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
41.5 Product Dependencies
41.5.1 I/O Lines
The pins used for interfacing the PWM may be multiplexed with PIO lines. The programmer must first program the
PIO controller to assign the desired PWM pins to their peripheral function. If I/O lines of the PWM are not used by
the application, they can be used for other purposes by the PIO controller.
All of the PWM outputs may or may not be enabled. If an application requires only four channels, then only four
PIO lines will be assigned to PWM outputs.
41.5.2 Power Management
The PWM is not continuously clocked. The programmer must first enable the PWM clock in the Power
Management Controller (PMC) before using the PWM. However, if the application does not require PWM
operations, the PWM clock can be stopped when not needed and be restarted later. In this case, the PWM will
resume its operations where it left off.
Configuring the PWM does not require the PWM clock to be enabled.
41.5.3 Interrupt Sources
The PWM interrupt line is connected on one of the internal sources of the Advanced Interrupt Controller. Using the
PWM interrupt requires the AIC to be programmed first. Note that it is not recommended to use the PWM interrupt
line in edge sensitive mode.
Table 41-2. I/O Lines
Instance Signal I/O Line Peripheral
PWM PWM0 PD24 B
PWM PWM1 PD25 B
PWM PWM1 PD31 B
PWM PWM2 PD26 B
PWM PWM2 PE31 A
PWM PWM3 PA25 B
PWM PWM3 PD0 B
Table 41-3. Peripheral IDs
Instance ID
PWM 19