SAM3S1B Atmel Corporation, SAM3S1B Datasheet - Page 456

• Manufacturer Part Number: SAM3S1B
• Manufacturer: Atmel Corporation

Specifications of SAM3S1B

• Flash (kbytes): 64 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 64 MHz
• Cpu: Cortex-M3
• # Of Touch Channels: 23
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Transceiver: 1
• Quadrature Decoder Channels: 1
• 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: 10
• 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): 16
• Self Program Memory: YES
• 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: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

• PLLBDIV2: PLLB Divisor by 2
26.16.12 PMC USB Clock Register
Name:
Address:
Access:
This register can only be written if the WPEN bit is cleared in
• USBS: USB Input Clock Selection
0 = USB Clock Input is PLLA
1 = USB Clock Input is PLLB
• USBDIV: Divider for USB Clock.
USB Clock is Input clock divided by USBDIV+1
456
31
23
15
–
–
–
7
–
SAM3S
0x400E0438
PLLBDIV2
0
1
30
22
14
PMC_USB
Read/Write
–
–
–
6
–
29
21
13
–
–
–
5
–
PLLB Clock Division
PLLB clock frequency is divided by 1.
PLLB clock frequency is divided by 2.
28
20
12
–
–
–
4
–
“PMC Write Protect Mode Register” on page
27
19
11
–
–
–
3
26
18
10
–
–
2
–
USBDIV
25
17
–
–
–
9
1
6500C–ATARM–8-Feb-11
466.
USBS
24
16
–
–
8
0