SAM4S16C Atmel Corporation, SAM4S16C Datasheet - Page 216

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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
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11.9.1.5
Name:
Access:
Reset:
The SCB_AIRCR register provides priority grouping control for the exception model, endian status for data accesses, and
reset control of the system. To write to this register, write 0x5FA to the VECTKEY field, otherwise the processor ignores the
write.
• VECTKEYSTAT: Register Key
Read:
Reads as 0xFA05.
• VECTKEY: Register Key
Write:
Writes 0x5FA to VECTKEY, otherwise the write is ignored.
• ENDIANNESS: Data Endianness
0: Little-endian.
1: Big-endian.
• PRIGROUP: Interrupt Priority Grouping
This field determines the split of group priority from subpriority. It shows the position of the binary point that splits the PRI_n
fields in the Interrupt Priority Registers into separate group priority and subpriority fields. The table below shows how the
PRIGROUP value controls this split:
216
216
ENDIANNESS
PRIGROUP
0b000
0b001
0b010
0b011
31
23
15
7
SAM4S
SAM4S
Application Interrupt and Reset Control Register
SCB_AIRCR
Read-write
0x000000000
Binary Point
bxxxxxxx.y
bxxxxxx.yy
bxxxxx.yyy
bxxxx.yyyy
30
22
14
6
Interrupt Priority Level Value, PRI_N[7:0]
(1)
Group Priority bits
[7:1]
[7:2]
[7:3]
[7:4]
29
21
13
5
VECTKEYSTAT/VECTKEY
VECTKEYSTAT/VECTKEY
28
20
12
4
Subpriority bits
None
[4:0]
[4:0]
[4:0]
27
19
11
3
SYSRESETREQ
Group Priorities
128
64
32
16
26
18
10
2
Number of
VECTCLRACTI
PRIGROUP
VE
Subpriorities
2
4
8
16
25
17
9
1
11100A–ATARM–28-Oct-11
11100A–ATARM–28-Oct-11
VECTRESET
24
16
8
0

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