AT32UC3A4256 Atmel Corporation, AT32UC3A4256 Datasheet - Page 617

• Manufacturer Part Number: AT32UC3A4256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A4256

• Flash (kbytes): 256 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• Hardware Qtouch Acquisition: No
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Ssc: 1
• Sd / Emmc: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 128
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0 to 3.6
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

26. Hi-Speed USB Interface (USBB)
26.1
26.2
Table 26-1.
32072G–11/2011
Pipe/Endpoint
Features
Overview
0
1
2
3
4
5
6
7
Description of USB Pipes/Endpoints
Mnemonic
Rev: 3.2.0.17
•
•
•
•
•
•
•
•
The Universal Serial Bus (USB) MCU device complies with the Universal Serial Bus (USB) 2.0
specification, in all speeds.
Each pipe/endpoint can be configured in one of several transfer types. It can be associated with
one or more banks of a dual-port RAM (DPRAM) used to store the current data payload. If sev-
eral banks are used (“ping-pong” mode), then one DPRAM bank is read or written by the CPU or
the DMA while the other is read or written by the USBB core. This feature is mandatory for iso-
chronous pipes/endpoints.
Table 26-1 on page 617
PEP0
PEP1
PEP2
PEP3
PEP4
PEP5
PEP6
PEP7
The theoretical maximal pipe/endpoint configuration (3648bytes) exceeds the real DPRAM size
(2368bytes). The user needs to be aware of this when configuring pipes/endpoints. To fully use
the 2368bytes of DPRAM, the user could for example use the configuration described
26-2 on page 617
Table 26-2.
Compatible with the USB 2.0 specification
Supports High (480Mbit/s), Full (12Mbit/s) and Low (1.5Mbit/s) speed Device and Embedded Host
eight pipes/endpoints
2368bytes of Embedded Dual-Port RAM (DPRAM) for Pipes/Endpoints
Up to 2 memory banks per Pipe/Endpoint (Not for Control Pipe/Endpoint)
Flexible Pipe/Endpoint configuration and management with dedicated DMA channels
On-Chip UTMI transceiver including Pull-Ups/Pull-downs
On-Chip pad including VBUS analog comparator
Pipe/Endpoint
0
Example of Configuration of Pipes/Endpoints Using the Whole DPRAM
Max. Size
512 bytes
512 bytes
512 bytes
512 bytes
512 bytes
512 bytes
512 bytes
.
64 bytes
Mnemonic
describes the hardware configuration of the USB MCU device.
PEP0
Max. Nb. Banks
1
2
2
2
2
2
2
2
64 bytes
Size
DMA
N
Y
Y
Y
Y
Y
Y
Y
Isochronous/Bulk/Interrupt/Control
Isochronous/Bulk/Interrupt/Control
Isochronous/Bulk/Interrupt/Control
Isochronous/Bulk/Interrupt/Control
Isochronous/Bulk/Interrupt/Control
Isochronous/Bulk/Interrupt/Control
Nb. Banks
Isochronous/Bulk/Interrupt
1
Control
Type
inTable
617