SAM3S16C Atmel Corporation, SAM3S16C Datasheet - Page 499
SAM3S16C
Manufacturer Part Number
SAM3S16C
Description
Manufacturer
Atmel Corporation
Datasheet
1.SAM3S16C.pdf
(1130 pages)
Specifications of SAM3S16C
Flash (kbytes)
1024 Kbytes
Pin Count
100
Max. Operating Frequency
100 MHz
Cpu
Cortex-M3
# Of Touch Channels
39
Hardware Qtouch Acquisition
No
Max I/o Pins
79
Ext Interrupts
79
Usb Transceiver
1
Quadrature Decoder Channels
2
Usb Speed
Full Speed
Usb Interface
Device
Spi
3
Twi (i2c)
2
Uart
4
Ssc
1
Sd / Emmc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
1000
Analog Comparators
1
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
128
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
6
Output Compare Channels
6
Input Capture Channels
6
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
457
457
Resynchronized input on line 0
SAM3S16
SAM3S16
Example
Interrupt Mode Configuration
When an input Edge or Level is detected on an I/O line, the corresponding bit in PIO_ISR (Inter-
rupt 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 generate a single interrupt signal to the Nested Vector Interrupt Controller (NVIC).
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. When an Interrupt is
enabled on a “Level”, the interrupt is generated as long as the interrupt source is not cleared,
even if some read accesses in PIO_ISR are performed.
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.
• 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
Level is selected in the PIO_ELSR). The current status of this selection is accessible through
the PIO_FRLHSR (Fall/Rise - Low/High Status Register).
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
11117B–ATARM–18-Oct-11
11117B–ATARM–18-Oct-11
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