SAM4S16C Atmel Corporation, SAM4S16C Datasheet - Page 68

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SAM4S16C

Manufacturer Part Number
SAM4S16C
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of SAM4S16C

Flash (kbytes)
1024 Kbytes
Pin Count
100
# Of Touch Channels
32
Hardware Qtouch Acquisition
No
Max I/o Pins
79
Ext Interrupts
79
Usb Transceiver
1
Quadrature Decoder Channels
2
Usb Speed
Full Speed
Usb Interface
Device
Spi
3
Twi (i2c)
2
Uart
4
Ssc
1
Sd / Emmc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
1000
Analog Comparators
1
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
128
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
6
Output Compare Channels
6
Input Capture Channels
6
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
11.4.3.4
11.4.3.5
68
68
SAM4S
SAM4S
Vector Table
Exception Priorities
The vector table contains the reset value of the stack pointer, and the start addresses, also
called exception vectors, for all exception handlers.
tion vectors in the vector table. The least-significant bit of each vector must be 1, indicating that
the exception handler is Thumb code.
Figure 11-5. Vector Table
On system reset, the vector table is fixed at address 0x00000000. Privileged software can write to
the SCB_VTOR register to relocate the vector table start address to a different memory location,
in the range 0x00000080 to 0x3FFFFF80, see
As
If the 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
Priority Registers”
• a lower priority value indicating a higher priority
• configurable priorities for all exceptions except Reset, Hard fault and NMI.
Table 11-9
shows, all exceptions have an associated priority, with:
, and
Exception number
“Interrupt Priority Registers”
255
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
.
.
.
IRQ number
239
-10
-11
-12
-13
-14
-1
-2
-5
2
1
0
“Vector Table Offset Register”
0x03FC
0x004C
0x0048
0x0044
0x0040
0x003C
0x0038
0x002C
0x0018
0x0014
0x0010
0x000C
0x0008
0x0004
0x0000
Offset
.
.
.
.
Figure 11-5
Memory management fault
Reserved for Debug
Initial SP value
Usage fault
Hard fault
Reserved
Reserved
Bus fault
PendSV
IRQ239
SysTick
SVCall
Vector
Reset
IRQ2
IRQ1
IRQ0
NMI
.
.
.
shows the order of the excep-
.
11100A–ATARM–28-Oct-11
11100A–ATARM–28-Oct-11
“System Handler

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