SAM3U2C Atmel Corporation, SAM3U2C Datasheet - Page 653
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SAM3U2C
Manufacturer Part Number
SAM3U2C
Description
Manufacturer
Atmel Corporation
Specifications of SAM3U2C
Flash (kbytes)
128 Kbytes
Pin Count
100
Max. Operating Frequency
96 MHz
Cpu
Cortex-M3
# Of Touch Channels
28
Hardware Qtouch Acquisition
No
Max I/o Pins
57
Ext Interrupts
57
Usb Transceiver
1
Quadrature Decoder Channels
1
Usb Speed
Hi-Speed
Usb Interface
Device
Spi
4
Twi (i2c)
1
Uart
4
Ssc
1
Sd / Emmc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
12
Adc Speed (ksps)
384
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
36
Self Program Memory
YES
External Bus Interface
1
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
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33.10.6
Figure 33-32. Read Write Flowchart in Slave Mode
6430E–ATARM–29-Aug-11
6430E–ATARM–29-Aug-11
Read Write Flowcharts
No
No
SADR + MSDIS + SVEN
Set the SLAVE mode:
Read Status Register
EOSACC = 1 ?
TXCOMP = 1 ?
SVACC = 1 ?
No
END
The flowchart shown in
in Slave mode. A polling or interrupt method can be used to check the status bits. The interrupt
method requires that the interrupt enable register (TWI_IER) be configured first.
GACC = 1 ?
Figure 33-32 on page 653
No
programming sequence
Read TWI_RHR
SVREAD = 0 ?
RXRDY= 0 ?
Decoding of the
Change SADR
Prog seq
OK ?
No
gives an example of read and write operations
No
GENERAL CALL TREATMENT
No
Write in TWI_THR
TXRDY= 1 ?
SAM3U Series
SAM3U Series
No
653
653
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