SAM3U2E Atmel Corporation, SAM3U2E Datasheet - Page 1064
SAM3U2E
Manufacturer Part Number
SAM3U2E
Description
Manufacturer
Atmel Corporation
Specifications of SAM3U2E
Flash (kbytes)
128 Kbytes
Pin Count
144
Max. Operating Frequency
96 MHz
Cpu
Cortex-M3
# Of Touch Channels
57
Hardware Qtouch Acquisition
No
Max I/o Pins
96
Ext Interrupts
96
Usb Transceiver
1
Quadrature Decoder Channels
1
Usb Speed
Hi-Speed
Usb Interface
Device
Spi
5
Twi (i2c)
2
Uart
5
Ssc
1
Sd / Emmc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
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
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41.3
Table 41-1.
41.4
41.4.1
41.4.2
41.4.3
41.4.4
41.4.5
41.4.6
1064
Pin Name
AD12B0 - AD12B7
AD12BTRG
Signal Description
Product Dependencies
SAM3U Series
Power Management
Interrupt Sources
Analog Inputs
I/O Lines
Timer Triggers
PWM Event Lines
ADC12B Pin Description
The ADC12B Controller is not continuously clocked. The programmer must first enable the
ADC12B Controller clock in the Power Management Controller (PMC) before using the ADC12B
Controller. However, if the application does not require ADC12B operations, the ADC12B Con-
troller clock can be stopped when not needed and restarted when necessary.
Configuring the ADC12B Controller does not require the ADC12B Controller clock to be
enabled.
The ADC12B interrupt line is connected on one of the sources of the Nested Vectored Interrupt
Controller (NVIC). Using the ADC12B interrupt requires the NVIC to be programmed first.
Table 41-2.
The analog input pins are multiplexed with PIO lines. The assignment of the ADC12B input is
automatically done as soon as the corresponding channel is enabled by writing the register
ADC12B_CHER. By default, after reset, the PIO line is configured as an input with its pull-up
enabled and the ADC12B input is connected to the GND.
The AD12BTRG pin is shared with other peripheral functions through the PIO Controller. In this
case, the PIO Controller needs to be set accordingly to assign the AD12BTRG pin to the
ADC12B function.
Table 41-3.
Timer Counters may or may not be used as hardware triggers depending on user requirements.
Thus, some or all of the timer counters may be non-connected.
PWM Event Lines may or may not be used as hardware triggers depending on user
requirements.
Instance
ADC12B
Instance
ADC12B
Peripheral IDs
I/O Lines
Description
Analog input channels
External trigger
26
ID
AD12BTRG
Signal
I/O Line
PA2
6430E–ATARM–29-Aug-11
Peripheral
B
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