SAM3U2C Atmel Corporation, SAM3U2C Datasheet - Page 876

• 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

38.6.2
38.6.2.1
Figure 38-3. Functional View of the Channel Block Diagram
876
876
Peripheral Bus
Generator
from APB
Clock
from
SAM3U Series
SAM3U Series
PWM Channel
Channel Block Diagram
Selector
Clock
Each of the 4 channels is composed of six blocks:
• A clock selector which selects one of the clocks provided by the clock generator (described in
• A counter clocked by the output of the clock selector. This counter is incremented or
• A comparator used to compute the OCx output waveform according to the counter value and
• A dead-time generator providing two complementary outputs (DTOHx/DTOLx) which allows
• An output override block that can force the two complementary outputs to a programmed
• An asynchronous fault protection mechanism that has the highest priority to override the two
Section 38.6.1 on page
decremented according to the channel configuration and comparators matches. The size of
the counter is 16 bits.
the configuration. The counter value can be the one of the channel counter or the one of the
channel 0 counter according to SYNCx bit in the
page 913
to drive external power control switches safely.
value (OOOHx/OOOLx).
complementary outputs in case of fault detection (PWMHx/PWMLx).
Duty-Cycle
Channel x
Channel 0
Counter
Counter
Update
Period
(PWM_SCM).
MUX
Comparator
SYNCx
874).
OCx
Channel x
Dead-Time
Generator
DTOHx
DTOLx
“PWM Sync Channels Mode Register” on
Override
Output
OOOHx
OOOLx
Protection
Fault
6430E–ATARM–29-Aug-11
6430E–ATARM–29-Aug-11
PWMHx
PWMLx