SAM3S4C Atmel Corporation, SAM3S4C Datasheet - Page 930
SAM3S4C
Manufacturer Part Number
SAM3S4C
Description
Manufacturer
Atmel Corporation
Specifications of SAM3S4C
Flash (kbytes)
256 Kbytes
Pin Count
100
Max. Operating Frequency
64 MHz
Cpu
Cortex-M3
# Of Touch Channels
39
Hardware Qtouch Acquisition
No
Max I/o Pins
79
Ext Interrupts
79
Usb Transceiver
1
Quadrature Decoder Channels
2
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
16
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)
48
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
6
Output Compare Channels
6
Input Capture Channels
6
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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37.6.1.3
930
SAM3S
USB Transfer Event Definitions
As indicated below, transfers are sequential events carried out on the USB bus.
Table 37-5.
Notes:
A status transaction is a special type of host-to-device transaction used only in a control transfer.
The control transfer must be performed using endpoints with no ping-pong attributes. According
to the control sequence (read or write), the USB device sends or receives a status transaction.
Control Transfers
Interrupt IN Transfer
(device toward host)
Interrupt OUT Transfer
(host toward device)
Isochronous IN Transfer
(device toward host)
Isochronous OUT Transfer
(host toward device)
Bulk IN Transfer
(device toward host)
Bulk OUT Transfer
(host toward device)
1. Setup Transaction
2. Data IN Transaction
3. Data OUT Transaction
1. Control transfer must use endpoints with no ping-pong attributes.
2. Isochronous transfers must use endpoints with ping-pong attributes.
3. Control transfers can be aborted using a stall handshake.
USB Transfer Events
(1) (3)
(2)
(2)
• Setup transaction > Data IN transactions > Status
• Setup transaction > Data OUT transactions > Status
• Setup transaction > Status IN transaction
• Data IN transaction > Data IN transaction
• Data OUT transaction > Data OUT transaction
• Data IN transaction > Data IN transaction
• Data OUT transaction > Data OUT transaction
• Data IN transaction > Data IN transaction
• Data OUT transaction > Data OUT transaction
OUT transaction
IN transaction
6500C–ATARM–8-Feb-11
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