Datasheet

127
SAM9263 [DATASHEET]
Atmel-6249N-ATARM-SAM9263-Datasheet_14-Mar-16
15. Periodic Interval Timer (PIT)
15.1 Description
The Periodic Interval Timer (PIT) provides the operating system’s scheduler interrupt. It is designed to offer
maximum accuracy and efficient management, even for systems with long response time.
15.2 Embedded Characteristics
 Includes a 20-bit Periodic Counter, with less than 1 µs accuracy
 Includes a 12-bit Interval Overlay Counter
 Real Time OS or Linux
®
/Windows CE
®
compliant tick generator
15.3 Block Diagram
Figure 15-1. Periodic Interval Timer
20-bit
Counter
MCK/16
PIV
PIT_MR
CPIV
PIT_PIVR
PICNT
12-bit
Adder
0
0
read PIT_PIVR
CPIV PICNT
PIT_PIIR
PITS
PIT_SR
set
reset
PITIEN
PIT_MR
pit_irq
1
0
10
MCK
Prescaler
= ?