SAM3N2A Atmel Corporation, SAM3N2A Datasheet - Page 364

• 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

24.15.10 PMC Master Clock Register
Name:
Address:
Access:
This register can only be written if the WPEN bit is cleared in
• CSS: Master Clock Source Selection
• PRES: Processor Clock Prescaler
• PLLDIV2: PLL Divisor by 2
364
31
23
15
–
–
–
7
–
PLLDIV2
SAM3N
Value
Value
0
1
2
3
0
1
2
3
4
5
6
7
0
1
PMC_MCKR
0x400E0430
Read-write
30
22
14
–
–
–
6
Name
SLOW_CLK
MAIN_CLK
PLL_CLK
–
Name
CLK
CLK_2
CLK_4
CLK_28
CLK_16
CLK_32
CLK_64
CLK_3
PLL Clock Division
PLL clock frequency is divided by 1
PLL clock frequency is divided by 2
PRES
29
21
13
–
–
–
5
PLLDIV2
28
20
12
–
–
4
Slow Clock is selected
Main Clock is selected
Description
Selected clock
Selected clock divided by 2
Selected clock divided by 4
Selected clock divided by 8
Selected clock divided by 16
Selected clock divided by 32
Selected clock divided by 64
Selected clock divided by 3
Description
PLL Clock is selected
Reserved
“PMC Write Protect Mode Register” on page
27
19
11
–
–
–
–
3
26
18
10
–
–
–
2
–
25
17
–
–
–
9
1
11011A–ATARM–04-Oct-10
CSS
374.
24
16
–
–
8
–
0