SAM3U2E Atmel Corporation, SAM3U2E Datasheet - Page 732
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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732
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SAM3U Series
SAM3U Series
Write Protection Registers
To prevent any single software error that may corrupt USART behavior, certain address spaces
can be write-protected by setting the WPEN bit in the USART Write Protect Mode Register
(US_WPMR).
If a write access to the protected registers is detected, then the WPVS flag in the USART Write
Protect Status Register (US_WPSR) is set and the field WPVSRC indicates in which register the
write access has been attempted.
The WPVS flag is reset by writing the USART Write Protect Mode Register (US_WPMR) with
the appropriate access key, WPKEY.
The protected registers are:
•
•
•
•
•
•
•
“USART Mode Register”
“USART Baud Rate Generator Register”
“USART Receiver Time-out Register”
“USART Transmitter Timeguard Register”
“USART FI DI RATIO Register”
“USART IrDA FILTER Register”
“USART Manchester Configuration Register”
6430E–ATARM–29-Aug-11
6430E–ATARM–29-Aug-11
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