SAM9M10 Atmel Corporation, SAM9M10 Datasheet - Page 462
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SAM9M10
Manufacturer Part Number
SAM9M10
Description
Manufacturer
Atmel Corporation
Datasheets
1.M40800.pdf
(284 pages)
2.SAM9261.pdf
(248 pages)
3.SAM9M10.pdf
(59 pages)
4.SAM9M10.pdf
(1398 pages)
Specifications of SAM9M10
Flash (kbytes)
0 Kbytes
Pin Count
324
Max. Operating Frequency
400 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
160
Ext Interrupts
160
Usb Transceiver
3
Usb Speed
Hi-Speed
Usb Interface
Host, Device
Spi
2
Twi (i2c)
2
Uart
5
Lin
4
Ssc
2
Ethernet
1
Sd / Emmc
2
Graphic Lcd
Yes
Video Decoder
Yes
Camera Interface
Yes
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
440
Resistive Touch Screen
Yes
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
64
Self Program Memory
NO
External Bus Interface
2
Dram Memory
DDR2/LPDDR, SDRAM/LPSDR
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
0.9 to 1.1
Fpu
No
Mpu / Mmu
No / Yes
Timers
6
Output Compare Channels
6
Input Capture Channels
6
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
No
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Figure 30-5. Input Glitch Filter Timing
30.4.10
Figure 30-6. Input Change Interrupt Timings
30.4.11
462
if PIO_IFSR = 0
if PIO_IFSR = 1
Read PIO_ISR
PIO_PDSR
PIO_PDSR
Pin Level
Pin Level
PIO_ISR
SAM9M10
MCK
Input Change Interrupt
MCK
Write Protected Registers
The PIO Controller can be programmed to generate an interrupt when it detects an input change
on an I/O line. The Input Change Interrupt is controlled by writing PIO_IER (Interrupt Enable
Register) and PIO_IDR (Interrupt Disable Register), which respectively enable and disable the
input change interrupt by setting and clearing the corresponding bit in PIO_IMR (Interrupt Mask
Register). As Input change detection is possible only by comparing two successive samplings of
the input of the I/O line, the PIO Controller clock must be enabled. The Input Change Interrupt is
available, regardless of the configuration of the I/O line, i.e. configured as an input only, con-
trolled by the PIO Controller or assigned to a peripheral function.
When an input change is detected on an I/O line, the corresponding bit in PIO_ISR (Interrupt
Status Register) is set. If the corresponding bit in PIO_IMR is set, the PIO Controller interrupt
line is asserted. The interrupt signals of the thirty-two channels are ORed-wired together to gen-
erate a single interrupt signal to the Advanced Interrupt Controller.
When the software reads PIO_ISR, all the interrupts are automatically cleared. This signifies that
all the interrupts that are pending when PIO_ISR is read must be handled.
To prevent any single software error that may corrupt the PIO behavior, the registers listed
below can be write-protected by setting the WPEN bit in the PIO Write Protect Mode Register
(PIO_WPMR).
1 cycle
1 cycle
APB Access
up to 1.5 cycles
1 cycle
up to 2.5 cycles
2 cycles
APB Access
6355D–ATARM–7-Sep-11
up to 2 cycles
1 cycle
1 cycle
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