SAM3N1A Atmel Corporation, SAM3N1A Datasheet - Page 477

• Manufacturer Part Number: SAM3N1A
• Manufacturer: Atmel Corporation

Specifications of SAM3N1A

• Flash (kbytes): 64 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 48 MHz
• Cpu: Cortex-M3
• # Of Touch Channels: 17
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• 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): 8
• 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

Figure 28-18. TWI Read Operation with Single Data Byte without Internal Address
11011A–ATARM–04-Oct-10
11011A–ATARM–04-Oct-10
(CLDIV, CHDIV, CKDIV) in TWI_CWGR
Read Receive Holding Register
Set the Master Mode register:
TWI_CR = MSEN + SVDIS
TWI_CR = START | STOP
Read ==> bit MREAD = 1
Set the Control register:
- Device slave address
- Transfer direction bit
Read Status register
Read status register
(Needed only once)
Start the transfer
- Master enable
Yes
TXCOMP = 1?
Yes
Set TWI clock
RXRDY = 1?
BEGIN
END
No
No
SAM3N
SAM3N
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