SAM3N4B Atmel Corporation, SAM3N4B Datasheet - Page 578

• Manufacturer Part Number: SAM3N4B
• Manufacturer: Atmel Corporation

Specifications of SAM3N4B

• Flash (kbytes): 256 Kbytes
• Pin Count: 64
• 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: 3
• Twi (i2c): 2
• Uart: 4
• Ssc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 10
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• 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

30.8.16
Name:
Addresses:
Access:
Reset:
• WPVS: Write Protect Violation Status
0 = No Write Protect Violation has occurred since the last read of the US_WPSR register.
1 = A Write Protect Violation has occurred since the last read of the US_WPSR register. If this violation is an unauthorized
attempt to write a protected register, the associated violation is reported into field WPVSRC.
• WPVSRC: Write Protect Violation Source
When WPVS is active, this field indicates the write-protected register (through address offset or code) in which a write
access has been attempted.
Note:
11011A–ATARM–04-Oct-10
11011A–ATARM–04-Oct-10
31
—
23
15
—
7
Reading US_WPSR automatically clears all fields.
USART Write Protect Status Register
30
—
22
14
—
US_WPSR
0x400240E8 (0), 0x400280E8 (1)
Read-only
See
6
Table 30-15
29
21
13
—
—
5
28
20
12
—
—
4
WPVSRC
WPVSRC
27
19
11
—
—
3
26
18
10
—
—
2
25
17
—
—
9
1
SAM3N
SAM3N
WPVS
24
16
—
8
0
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