SAM9263 Atmel Corporation, SAM9263 Datasheet - Page 127

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SAM9263

Manufacturer Part Number
SAM9263
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of SAM9263

Flash (kbytes)
0 Kbytes
Pin Count
324
Max. Operating Frequency
240 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
160
Ext Interrupts
160
Usb Transceiver
3
Usb Speed
Full Speed
Usb Interface
Host, Device
Spi
2
Twi (i2c)
1
Uart
4
Can
1
Ssc
2
Ethernet
1
Sd / Emmc
2
Graphic Lcd
Yes
Video Decoder
No
Camera Interface
Yes
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
96
Self Program Memory
NO
External Bus Interface
2
Dram Memory
sdram
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Fpu
No
Mpu / Mmu
No / Yes
Timers
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
No
16. Periodic Interval Timer (PIT)
16.1
16.2
Figure 16-1. Periodic Interval Timer
6249I–ATARM–3-Oct-11
Prescaler
MCK
Overview
Block Diagram
MCK/16
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.
Counter
0
CPIV
CPIV
20-bit
0
1
PIT_PIVR
PIT_PIIR
PIT_MR
= ?
PIV
0
0
PICNT
Adder
12-bit
PICNT
1
PIT_SR
AT91SAM9263
read PIT_PIVR
PITS
set
reset
PIT_MR
PITIEN
pit_irq
127

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