Datasheet

31.8.17 Period Value
Name: PER
Offset: 0x40
Reset: 0xFFFFFFFF
Property: Write-Synchronized
Bit 31 30 29 28 27 26 25 24
Access
Reset
Bit 23 22 21 20 19 18 17 16
PER[17:10]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 1 1 1 1 1 1 1 1
Bit 15 14 13 12 11 10 9 8
PER[9:2]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 1 1 1 1 1 1 1 1
Bit 7 6 5 4 3 2 1 0
PER[1:0] DITHER[5:0]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 1 1 1 1 1 1 1 1
Bits 23:6 – PER[17:0] Period Value
These bits hold the value of the period buffer register.
Note: When the TCC is configured as 16-bit timer/counter, the excess bits are read zero.
Note: This bit field occupies the MSB of the register, [23:m]. m is dependent on the Resolution bit in the
Control A register (CTRLA.RESOLUTION):
CTRLA.RESOLUTION Bits [23:m]
0x0 - NONE 23:0
0x1 - DITH4 23:4
0x2 - DITH5 23:5
0x3 - DITH6 23:6 (depicted)
Bits 5:0 – DITHER[5:0] Dithering Cycle Number
These bits hold the number of extra cycles that are added on the PWM pulse period every 64 PWM
frames.
Note: This bit field consists of the n LSB of the register. n is dependent on the value of the Resolution
bits in the Control A register (CTRLA.RESOLUTION):
SAM D21 Family
TCC – Timer/Counter for Control Applications
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 780