SAM3N4A Atmel Corporation, SAM3N4A Datasheet - Page 179

• Manufacturer Part Number: SAM3N4A
• Manufacturer: Atmel Corporation

Specifications of SAM3N4A

• Flash (kbytes): 256 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 48 MHz
• Cpu: Cortex-M3
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 79
• Ext Interrupts: 79
• Quadrature Decoder Channels: 2
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 2
• Uart: 3
• Ssc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 24
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• 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: no / no
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

10.21.10 System Handler Control and State Register
• USGFAULTENA
Usage fault enable bit, set to 1 to enable
• BUSFAULTENA
Bus fault enable bit, set to 1 to enable
• MEMFAULTENA
Memory management fault enable bit, set to 1 to enable
• SVCALLPENDED
SVC call pending bit, reads as 1 if exception is pending
• BUSFAULTPENDED
Bus fault exception pending bit, reads as 1 if exception is pending
• MEMFAULTPENDED
Memory management fault exception pending bit, reads as 1 if exception is pending
• USGFAULTPENDED
Usage fault exception pending bit, reads as 1 if exception is pending
• SYSTICKACT
SysTick exception active bit, reads as 1 if exception is active
• PENDSVACT
PendSV exception active bit, reads as 1 if exception is active
1.
2.
3.
11011A–ATARM–04-Oct-10
SVCALLPENDE
SVCALLAVCT
31
23
15
D
7
Enable bits, set to 1 to enable the exception, or set to 0 to disable the exception.
Pending bits, read as 1 if the exception is pending, or as 0 if it is not pending. You can write to these bits to change the pending
Active bits, read as 1 if the exception is active, or as 0 if it is not active. You can write to these bits to change the active status of
status of the exceptions.
the exceptions, but see the Caution in this section.
BUSFAULTPEND
ED
30
22
14
6
The SHCSR enables the system handlers, and indicates:
See the register summary in
ments are:
• the pending status of the bus fault, memory management fault, and SVC exceptions
• the active status of the system handlers.
MEMFAULTPEN
Reserved
Reserved
DED
29
21
13
5
(3)
(1)
USGFAULTPEND
28
20
12
ED
4
Table 10-30 on page 164
(2)
(3)
Reserved
(3)
USGFAULTACT
SYSTICKACT
(2)
27
19
11
3
(2)
USGFAULTENA
PENDSVACT
Reserved
for the SHCSR attributes. The bit assign-
26
18
10
2
(2)
BUSFAULTENA
BUSFAULTACT
Reserved
25
17
9
1
SAM3N
MEMFAULTENA
MEMFAULTACT
MONITORACT
24
16
8
0
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