SAM3U2C Atmel Corporation, SAM3U2C Datasheet - Page 822

• Manufacturer Part Number: SAM3U2C
• 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

822
822
SAM3U Series
SAM3U Series
The following flowchart
tiple block transfers with the DMA Controller. Polling or interrupt method can be used to wait for
the end of write according to the contents of the Interrupt Mask Register (HSMCI_IMR).
Figure 37-10. Read Multiple Block and Write Multiple Block
Notes:
1. It is assumed that this command has been correctly sent (see
2. Handle errors reported in HSMCI_SR.
READ_MULTIPLE_BLOCK command (1)
Configure the HDMA channel X
DMAC_SADDRx and DMAC_DADDRx
DMAC_BTSIZE = BlockLength/4
(Figure
Read status register DMAC_EBCISR
Send SET_BLOCKLEN command (1)
Send WRITE_MULTIPLE_BLOCK or
Send SELECT/DESELECT_CARD
Read status register HSMCI_SR
Set the block length
HSMCI_MR |= (BlockLength << 16)
Set the DMAEN bit
HSMCI_DMA |= DMAEN
command (1) to select the card
Send STOP_TRANSMISSION
and Poll Bit FIFOEMPTY
DMAC_CHEN[X] = TRUE
and Poll Bit CBTC[X]
37-10) shows how to manage read multiple block and write mul-
New Buffer ?
XFRDONE = 1
command (1)
RETURN
Poll the bit
No
Yes
(2)
Yes
No
Figure
37-7).
6430E–ATARM–29-Aug-11
6430E–ATARM–29-Aug-11