Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
946
Figure 39-12. Method 3 (UPDM=2 and PTRM=0)
Figure 39-13. Method 3 (UPDM=2 and PTRM=1 and PTRCS=0)
39.6.3 PWM Comparison Units
The PWM provides 8
independent comparison units able to compare a programmed value with the current value of
the channel 0 counter (which is the channel counter of all synchronous channels,
). These comparisons are intended to generate pulses on the event lines (used to synchronize ADC, see
), to generate software interrupts and to trigger PDC transfer requests for the
synchronous channels (see “Method 3: Automatic write of duty-cycle values and automatic trigger of the update”
CCNT0
CDTYUPD
0x20
0x40
0x60
UPRCNT
0x0
0x1
0x0
0x1
0x0
0x1
CDTY
UPRUPD
0x1
0x3
transfer request
WRDY
0x0
0x1
0x2
0x3
0x0
0x1
0x2
UPR
0x1
0x3
0x80
0xA0
0xB0
0x20
0x40
0x60
0x80
0xA0
CCNT0
CDTYUPD
0x20
0x40
0x60
UPRCNT
0x0
0x1
0x0
0x1
0x0
0x1
CDTY
UPRUPD
0x1
0x3
CMP0 match
transfer request
WRDY
0x0
0x1
0x2
0x3
0x0
0x1
0x2
UPR
0x1
0x3
0x80
0xA0
0xB0
0x20
0x40
0x60
0x80
0xA0