SAM3U4E Atmel Corporation, SAM3U4E Datasheet - Page 312
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SAM3U4E
Manufacturer Part Number
SAM3U4E
Description
Manufacturer
Atmel Corporation
Specifications of SAM3U4E
Flash (kbytes)
256 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)
50
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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21.4.3.1
6430E–ATARM–29-Aug-11
6430E–ATARM–29-Aug-11
Getting Embedded Flash Descriptor
Figure 21-5. Command State Chart
This command allows the system to learn about the Flash organization. The system can take full
advantage of this information. For instance, a device could be replaced by one with more Flash
capacity, and so the software is able to adapt itself to the new configuration.
To get the embedded Flash descriptor, the application writes the GETD command in the
EEFC_FCR register. The first word of the descriptor can be read by the software application in
the EEFC_FRR register as soon as the FRDY flag in the EEFC_FSR register rises. The next
reads of the EEFC_FRR register provide the following word of the descriptor. If extra read oper-
Write FCMD and PAGENB in Flash Command Register
Check if FLOCKE flag Set
Check if FCMDE flag Set
Check if FRDY flag Set
Read Status: MC_FSR
Check if FRDY flag Set
Read Status: MC_FSR
Command Successfull
Yes
Yes
No
No
No
No
Yes
Yes
Locking region violation
Bad keyword violation
SAM3U Series
SAM3U Series
312
312
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