SAM3U4E Atmel Corporation, SAM3U4E Datasheet - Page 518
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SAM3U4E
Manufacturer Part Number
SAM3U4E
Description
Manufacturer
Atmel Corporation
Specifications of SAM3U4E
Flash (kbytes)
256 Kbytes
Pin Count
144
Max. Operating Frequency
96 MHz
Cpu
Cortex-M3
# Of Touch Channels
57
Hardware Qtouch Acquisition
No
Max I/o Pins
96
Ext Interrupts
96
Usb Transceiver
1
Quadrature Decoder Channels
1
Usb Speed
Hi-Speed
Usb Interface
Device
Spi
5
Twi (i2c)
2
Uart
5
Ssc
1
Sd / Emmc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
384
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
50
Self Program Memory
YES
External Bus Interface
1
Dram Memory
No
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
1.62 to 3.6
Fpu
No
Mpu / Mmu
Yes / No
Timers
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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Figure 30-7. Event Detector on Input Lines (Figure represents line 0)
30.5.10.1
30.5.10.2
30.5.10.3
30.5.10.4
518
518
Resynchronized input on line 0
SAM3U Series
SAM3U Series
Example
Interrupt Mode Configuration
Edge or Level Detection Configuration
Falling/Rising Edge or Low/High Level Detection Configuration.
If generating an interrupt is required on the following:
The configuration required is described below.
All the interrupt sources are enabled by writing 32’hFFFF_FFFF in PIO_IER.
Then the Additional Interrupt Mode is enabled for line 0 to 7 by writing 32’h0000_00FF in
PIO_AIMER.
Lines 3, 4 and 5 are configured in Level detection by writing 32’h0000_0038 in PIO_LSR.
The other lines are configured in Edge detection by default, if they have not been previously con-
figured. Otherwise, lines 0, 1, 2, 6 and 7 must be configured in Edge detection by writing
32’h0000_00C7 in PIO_ESR.
Lines 0, 2, 4, 5 and 7 are configured in Rising Edge or High Level detection by writing
32’h0000_00B5 in PIO_REHLSR.
• Rising edge on PIO line 0
• Falling edge on PIO line 1
• Rising edge on PIO line 2
• Low Level on PIO line 3
• High Level on PIO line 4
• High Level on PIO line 5
• Falling edge on PIO line 6
• Rising edge on PIO line 7
• Any edge on the other lines
PIO_REHLSR[0]
PIO_FELLSR[0]
Rising Edge
Falling Edge
High Level
Detector
Low Level
Detector
Detector
Detector
Detector
Edge
PIO_FRLHSR[0]
0
0
1
1
PIO_LSR[0]
PIO_ESR[0]
PIO_ELSR[0]
1
0
PIO_AIMER[0]
PIO_AIMDR[0]
PIO_AIMMR[0]
1
0
Event detection on line 0
Event Detector
6430E–ATARM–29-Aug-11
6430E–ATARM–29-Aug-11
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