SAM3N2A Atmel Corporation, SAM3N2A Datasheet - Page 362

• Manufacturer Part Number: SAM3N2A
• Manufacturer: Atmel Corporation

Specifications of SAM3N2A

• Flash (kbytes): 128 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 48 MHz
• Cpu: Cortex-M3
• # Of Touch Channels: 23
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 47
• Ext Interrupts: 47
• 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): 16
• 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

24.15.8
Name:
Address:
Access:
This register can only be written if the WPEN bit is cleared in
• MAINF: Main Clock Frequency
Gives the number of Main Clock cycles within 16 Slow Clock periods.
• MAINFRDY: Main Clock Ready
0 = MAINF value is not valid or the Main Oscillator is disabled.
1 = The Main Oscillator has been enabled previously and MAINF value is available.
362
31
23
15
–
–
7
SAM3N
PMC Clock Generator Main Clock Frequency Register
CKGR_MCFR
0x400E0424
Read-only
30
22
14
–
–
6
29
21
13
–
–
5
28
20
12
–
–
4
MAINF
MAINF
“PMC Write Protect Mode Register” on page
27
19
11
–
–
3
26
18
10
–
–
2
25
17
–
–
9
1
11011A–ATARM–04-Oct-10
374.
MAINFRDY
24
16
–
8
0