Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet

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SAM4S Series [DATASHEET]

Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14

The Timer Counter (TC) includes 3 identical 16-bit Timer Counter channels.
Each channel can be independently programmed to perform a wide range of functions including frequency 

measurement, event counting, interval measurement, pulse generation, delay timing and pulse width modulation. 
Each channel has three external clock inputs, five internal clock inputs and two multi-purpose input/output signals 

which can be configured by the user. Each channel drives an internal interrupt signal which can be programmed to 

generate processor interrupts.
The Timer Counter (TC) embeds a quadrature decoder logic connected in front of the timers and driven by TIOA0, 

TIOB0 and TIOB1 inputs. When enabled, the quadrature decoder performs the input lines filtering, decoding of 

quadrature signals and connects to the timers/counters in order to read the position and speed of the motor 

through the user interface.
The Timer Counter block has two global registers which act upon all TC channels:



Block Control Register (TC_BCR)—allows channels to be started simultaneously with the same instruction



Block Mode Register (TC_BMR)—defines the external clock inputs for each channel, allowing them to be 

chained

 gives the assignment of the device Timer Counter clock inputs common to Timer Counter 0 to 2.

Note:

1. When Slow Clock is selected for Master Clock (CSS = 0 in PMC Master Clock Register), TIMER_CLOCK5 input 

is equivalent to Master Clock.



Provides 3 16-bit Timer Counter channels



Wide range of functions including: 

̶

Frequency measurement

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Event counting

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Interval measurement

̶

Pulse generation

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Delay timing

̶

Pulse Width Modulation

̶

Up/down capabilities

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Quadrature decoder logic

̶

2-bit gray up/down count for stepper motor



Each channel is user-configurable and contains:

̶

Three external clock inputs

̶

Five Internal clock inputs

TIMER_CLOCK1

MCK/2

TIMER_CLOCK2

MCK/8

TIMER_CLOCK3

MCK/32

TIMER_CLOCK4

MCK/128

TIMER_CLOCK5

SLCK