SAM3N2A Atmel Corporation, SAM3N2A Datasheet - Page 16
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
SAM3N2A
Manufacturer Part Number
SAM3N2A
Description
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. Power Considerations
5.1
5.2
5.3
16
Power Supplies
Voltage Regulator
Typical Powering Schematics
SAM3N Summary
The SAM3N product has several types of power supply pins:
The SAM3N embeds a voltage regulator that is managed by the Supply Controller.
This internal regulator is intended to supply the internal core of SAM3N. It features two different
operating modes:
For adequate input and output power supply decoupling/bypassing, refer to the Voltage Regula-
tor section in the Electrical Characteristics section of the datasheet.
The SAM3N supports a 1.62V-3.6V single supply mode. The internal regulator input connected
to the source and its output feeds VDDCORE.
As VDDIN powers the voltage regulator and the ADC/DAC, when the user does not want to use
the embedded voltage regulator, it can be disabled by software via the SUPC (note that it is dif-
ferent from Backup mode).
• VDDCORE pins: Power the core, including the processor, the embedded memories and the
• VDDIO pins: Power the Peripherals I/O lines, Backup part, 32 kHz crystal oscillator and
• VDDIN pin: Voltage Regulator, ADC and DAC Power Supply. Voltage ranges from 1.8V to
• VDDPLL pin: Powers the PLL, the Fast RC and the 3 to 20 MHz oscillators. Voltage ranges
• In Normal mode, the voltage regulator consumes less than 700 µA static current and draws
• In Backup mode, the voltage regulator consumes less than 1 µA while its output (VDDOUT)
peripherals. Voltage ranges from 1.62V and 1.95V.
oscillator pads. Voltage ranges from 1.62V and 3.6V
3.6V for the Voltage Regulator
from 1.62V and 1.95V.
60 mA of output current. Internal adaptive biasing adjusts the regulator quiescent current
depending on the required load current. In Wait Mode quiescent current is only 7 µA.
is driven internally to GND. The default output voltage is 1.80V and the start-up time to reach
Normal mode is less than100 µs.
Figure 5-1
shows the power schematics.
11011AS–ATARM–04-Oct-10