SAM9G25_14 Datasheet, PDF (702/1167 Pages) ATMEL Corporation – Atmel | SMART ARM-based Embedded Microprocessor

36. Timer Counter (TC)
36.1
Description
The Timer Counter (TC) includes six identical 32-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 block has two global registers which act upon all TC channels.
The Block Control Register allows the channels to be started simultaneously with the same instruction.
The Block Mode Register defines the external clock inputs for each channel, allowing them to be chained.
Table 36-1 gives the assignment of the device Timer Counter clock inputs common to Timer Counter 0 to 2.
Table 36-1. Timer Counter Clock Assignment
Name
TIMER_CLOCK1
TIMER_CLOCK2
TIMER_CLOCK3
TIMER_CLOCK4
TIMER_CLOCK5⁽¹⁾
Definition
MCK/2
MCK/8
MCK/32
MCK/128
SLCK
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.
36.2
Embedded Characteristics
 Provides six 32-bit Timer Counter channels
 Wide range of functions including:
 Frequency measurement
 Event counting
 Interval measurement
 Pulse generation
 Delay timing
 Pulse Width Modulation
 Up/down capabilities
 Each channel is user-configurable and contains:
 Three external clock inputs
 Five Internal clock inputs
 Two multi-purpose input/output signals acting as trigger event
 Internal interrupt signal
 Two global registers that act on all TC channels
1702
SAM9G25 [DATASHEET]
Atmel-11032E-ATARM-SAMG25-Datasheet_13-Oct-14