SAM3N2B Atmel Corporation, SAM3N2B Datasheet - Page 341
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SAM3N2B
Manufacturer Part Number
SAM3N2B
Description
Manufacturer
Atmel Corporation
Specifications of SAM3N2B
Flash (kbytes)
128 Kbytes
Pin Count
64
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
3
Twi (i2c)
2
Uart
4
Ssc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
10
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
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
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24. Power Management Controller (PMC)
24.1
24.2
11011A–ATARM–04-Oct-10
Description
Embedded Characteristics
The Power Management Controller (PMC) optimizes power consumption by controlling all sys-
tem and user peripheral clocks. The PMC enables/disables the clock inputs to many of the
peripherals and the Cortex-M3 Processor.
The Supply Controller selects between the 32 kHz RC oscillator or the crystal oscillator. The
unused oscillator is disabled automatically so that power consumption is optimized.
By default, at startup the chip runs out of the Master Clock using the fast RC oscillator running at
4 MHz.
The user can trim the 8 and 12 MHz RC Oscillator frequency by software.
The Power Management Controller provides the following clocks:
• MCK, the Master Clock, programmable from a few hundred Hz to the maximum operating
• Processor Clock (HCLK), must be switched off when entering the processor in Sleep Mode.
• Free running processor Clock (FCLK)
• the Cortex-M3 SysTick external clock
• Peripheral Clocks, typically MCK, provided to the embedded peripherals (USART, SPI, TWI,
• Programmable Clock Outputs can be selected from the clocks provided by the clock
frequency of the device. It is available to the modules running permanently, such as the
Enhanced Embedded Flash Controller.
TC, etc.) and are independently controllable. In order to reduce the number of clock names in
a product, the Peripheral Clocks are named MCK in the product datasheet.
generator and driven on the PCKx pins.
SAM3N
341
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