SAM3N2A Atmel Corporation, SAM3N2A Datasheet - Page 22

• Manufacturer Part Number: SAM3N2A
• Manufacturer: Atmel Corporation

Specifications of SAM3N2A

• Flash (kbytes): 128 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 48 MHz
• Cpu: Cortex-M3
• # Of Touch Channels: 23
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 47
• Ext Interrupts: 47
• Quadrature Decoder Channels: 2
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 2
• Uart: 3
• Ssc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 16
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• 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: no / no
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

5.7
22
Fast Start-Up
SAM3N
The SAM3N allows the processor to restart in a few microseconds while the processor is in wait
mode. A fast start up can occur upon detection of a low level on one of the 19 wake-up inputs
(WKUP0 to 15 + SM + RTC + RTT).
The fast restart circuitry, as shown in
up signal to the Power Management Controller. As soon as the fast start-up signal is asserted,
the PMC automatically restarts the embedded 4 MHz fast RC oscillator, switches the master
clock on this 4 MHz clock and reenables the processor clock.
Figure 5-5.
WKUP15
WKUP0
Fast Start-Up Sources
rtc_alarm
rtt_alarm
Falling/Rising
Falling/Rising
Detector
Detector
Edge
Edge
RTCEN
RTTEN
Figure
FSTT15
FSTT0
5-5, is fully asynchronous and provides a fast start-
11011A–ATARM–04-Oct-10
fast_restart