SAM4S16C Atmel Corporation, SAM4S16C Datasheet - Page 212

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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
11.9.1.3
Name:
Access:
Reset:
The SCB_ICSR register provides a set-pending bit for the Non-Maskable Interrupt (NMI) exception, and set-pending and
clear-pending bits for the PendSV and SysTick exceptions.
It indicates:
• NMIPENDSET: NMI Set-pending
Write:
PendSV set-pending bit.
Write:
0: no effect.
1: changes NMI exception state to pending.
Read:
0: NMI exception is not pending.
1: NMI exception is pending.
As NMI is the highest-priority exception, the processor normally enters the NMI exception handler as soon as it registers a
write of 1 to this bit. Entering the handler clears this bit to 0. A read of this bit by the NMI exception handler returns 1 only if
the NMI signal is reasserted while the processor is executing that handler.
• PENDSVSET: PendSV Set-pending
Write:
0: no effect.
1: changes PendSV exception state to pending.
Read:
0: PendSV exception is not pending.
212
212
NMIPENDSET
• the exception number of the exception being processed, and whether there are preempted active exceptions,
• the exception number of the highest priority pending exception, and whether any interrupts are pending.
31
23
15
7
SAM4S
SAM4S
Interrupt Control and State Register
SCB_ICSR
Read-write
0x000000000
ISRPENDING
30
22
14
6
VECTPENDING
29
21
13
5
PENDSVSET
28
20
12
4
VECTACTIVE
PENDSVCLR
RETTOBASE
27
19
11
3
VECTPENDING
PENDSTSET
26
18
10
2
PENDSTCLR
25
17
9
1
11100A–ATARM–28-Oct-11
11100A–ATARM–28-Oct-11
VECTACTIVE
24
16
8
0

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