SAM3U2C Atmel Corporation, SAM3U2C Datasheet - Page 779

• Manufacturer Part Number: SAM3U2C
• Manufacturer: Atmel Corporation

Specifications of SAM3U2C

• Flash (kbytes): 128 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 96 MHz
• Cpu: Cortex-M3
• # Of Touch Channels: 28
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 57
• Ext Interrupts: 57
• Usb Transceiver: 1
• Quadrature Decoder Channels: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device
• Spi: 4
• Twi (i2c): 1
• Uart: 4
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 36
• 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

Figure 36-15. Predefined Connection of the Quadrature Decoder with Timer Counters
36.6.14.2
6430E–ATARM–29-Aug-11
6430E–ATARM–29-Aug-11
TIOA0
TIOB0
TIOB1
Input Pre-processing
PHA
PHB
IDX
(Filter + Edge
Detect + QD)
Quadrature
Decoder
Interruptions can be generated on different events.
A compare function (using TC_RC register) is available on channel 0 (speed/position) or chan-
nel 1 (rotation) and can generate an interrupt by means of the CPCS flag in the TC_SR
registers.
Input pre-processing consists of capabilities to take into account rotary sensor factors such as
polarities and phase definition followed by configurable digital filtering.
Each input can be negated and swapping PHA, PHB is also configurable.
PHEdges
Index
Direction
TIOA0
TIOB0
TIOB1
1
QDEN
SPEEDEN
1
1
1
QDEN
TIOA
TIOB
XC0
TIOB
XC0
1
1
Reset pulse
XC0
XC0
Speed Time Base
SAM3U Series
SAM3U Series
Timer/Counter
Channel 0
Speed/Position
Timer/Counter
Channel 1
Rotation
Timer/Counter
Channel 2
779
779