SAM3U4E Atmel Corporation, SAM3U4E Datasheet - Page 81
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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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13.5.5
6430E–ATARM–29-Aug-11
Exception priorities
Figure 13-3. Vector table
On system reset, the vector table is fixed at address 0x00000000. Privileged software can write to
the VTOR to relocate the vector table start address to a different memory location, in the range
0x00000080 to 0x3FFFFF80, see
As
If software does not configure any priorities, then all exceptions with a configurable priority have
a priority of 0. For information about configuring exception priorities see
• a lower priority value indicating a higher priority
• configurable priorities for all exceptions except Reset, Hard fault.
•
•
Table 13-9 on page 79
“System Handler Priority Registers” on page 190
“Interrupt Priority Registers” on page
Exception number
45
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
.
.
.
shows, all exceptions have an associated priority, with:
“Vector Table Offset Register” on page
IRQ number
29
-10
-11
-12
-13
-14
-1
-2
-5
2
1
0
172.
0x00B4
0x004C
0x0048
0x0044
0x0040
0x003C
0x0038
0x002C
0x0018
0x0014
0x0010
0x000C
0x0008
0x0004
0x0000
Offset
.
.
.
Memory management fault
Reserved for Debug
Initial SP value
Usage fault
Reserved
Reserved
Hard fault
Reserved
Bus fault
PendSV
IRQ29
Systick
SVCall
Vector
Reset
IRQ2
IRQ1
IRQ0
.
.
.
SAM3U Series
184.
81
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