SAM3S1B Atmel Corporation, SAM3S1B Datasheet - Page 1099

• 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

44.2.2.3
44.2.3
44.2.3.1
44.2.4
44.2.4.1
6500C–ATARM–8-Feb-11
Cyclic Redundancy Check Calculation (CRCCU)
SAM-BA
ADC: Trigger Launch Only One Conversion
CRCCU: Compare Function
SAM-BA Boot: Start-up Issue when Using No Clock on XIN
A start command initiates a conversion sequence of one channel, but not of all activated chan-
nels as expected.
Send as many start commands as the number of activated channels, or use the free run mode.
The Transfer Reference Register TR_CRC offset is not CRCCU_DSCR+0x10 but
CRCCU_DSCR+0xE0.
Two Workarounds are possible:
If no crystal (between XIN/XOUT) or no ceramic resonator (between XIN/XOUT) or no bypass
mode (on XIN) is used, SAM-BA Boot may not start on some parts. As SAM-BA Boot is running
by default when the Flash is erased, the parts cannot be accessed even by JTAG under those
conditions.
Use an external crystal or ceramic resonator on XIN/XOUT, or use the Main oscillator in bypass
mode (applying a clock on XIN).
• Either do not use the compare function and process the comparison by software
• Or set the TR_CRC at the address CRCCU_DSCR+0xE0
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
SAM3S
1099