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AT91SAM7X512 Fiches technique(PDF) 79 Page - ATMEL Corporation

No de pièce AT91SAM7X512
Description  AT91 ARM Thumb-based Microcontrollers
PDF  687 Pages
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Fabricant  ATMEL [ATMEL Corporation]
Site Internet  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT91SAM7X512 Fiches technique(HTML) 79 Page - ATMEL Corporation

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6120H–ATARM–17-Feb-09
AT91SAM7X512/256/128 Preliminary
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 maximum 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
0
read PIT_PIVR
CPIV
PICNT
PIT_PIIR
PITS
PIT_SR
set
reset
PITIEN
PIT_MR
pit_irq
1
0
1
0
MCK
Prescaler
= ?



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