Datasheet
36
AT32UC3A
– Supports Mobile SDRAM Devices
• Error Detection
– Refresh Error Interrupt
• SDRAM Power-up Initialization by Software
• CAS Latency of 1, 2, 3 Supported
• Auto Precharge Command Not Used
10.11.4 USB Controller
•
USB 2.0 Compliant, Full-/Low-Speed (FS/LS) and On-The-Go (OTG), 12 Mbit/s
• 7 Pipes/Endpoints
• 960 bytes 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 Transceivers Including Pull-Ups
10.11.5 Serial Peripheral Interface
•
Supports communication with serial external devices
– Four chip selects with external decoder support allow communication with up to 15
peripherals
– Serial memories, such as DataFlash and 3-wire EEPROMs
– Serial peripherals, such as ADCs, DACs, LCD Controllers, CAN Controllers and Sensors
– External co-processors
• Master or slave serial peripheral bus interface
– 8- to 16-bit programmable data length per chip select
– Programmable phase and polarity per chip select
– Programmable transfer delays between consecutive transfers and between clock and data
per chip select
– Programmable delay between consecutive transfers
– Selectable mode fault detection
• Very fast transfers supported
– Transfers with baud rates up to Peripheral Bus A (PBA) max frequency
– The chip select line may be left active to speed up transfers on the same device
10.11.6 Two-wire Interface
•
High speed up to 400kbit/s
• Compatibility with standard two-wire serial memory
• One, two or three bytes for slave address
• Sequential read/write operations
10.11.7 USART
•
Programmable Baud Rate Generator
• 5- to 9-bit full-duplex synchronous or asynchronous serial communications
– 1, 1.5 or 2 stop bits in Asynchronous Mode or 1 or 2 stop bits in Synchronous Mode
– Parity generation and error detection
– Framing error detection, overrun error detection
– MSB- or LSB-first
– Optional break generation and detection
– By 8 or by-16 over-sampling receiver frequency
– Hardware handshaking RTS-CTS
– Receiver time-out and transmitter timeguard
– Optional Multi-drop Mode with address generation and detection
32058KS–AVR32–01/12