at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 553

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

34. Timer Counter (TC)
34.1
6384B–ATARM–15-Dec-08
Overview
The Timer Counter (TC) includes three 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 inter-
rupt signal which can be programmed to generate processor interrupts.
The Timer Counter block has two global registers which act upon all three TC channels.
The Block Control Register allows the three 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 34-1
Counter 0 to 2
Table 34-1.
Name
TIMER_CLOCK1
TIMER_CLOCK2
TIMER_CLOCK3
TIMER_CLOCK4
TIMER_CLOCK5
gives the assignment of the device Timer Counter clock inputs common to Timer
Timer Counter Clock Assignment
AT91SAM9G20 Preliminary
Definition
MCK/2
MCK/8
MCK/32
MCK/128
SLCK
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