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SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
15. Periodic Interval Timer (PIT)
15.1
Overview
The Periodic Interval Timer (PIT) provides the operating system’s scheduler interrupt. It is designed to offer maxi-
mum accuracy and efficient management, even for systems with long response time.
15.2
Block Diagram
Figure 15-1. Periodic Interval Timer
20-bit
Counter
MCK/16
PIV
PIT_MR
CPIV
PIT_PIVR
PICNT
12-bit
Adder
0
read PIT_PIVR
CPIV
PICNT
PIT_PIIR
PITS
PIT_SR
set
reset
PITIEN
PIT_MR
pit_irq
1
0
1
0
MCK
Prescaler
= ?