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AT91SAM7X256 Datasheet(PDF) 33 Page - ATMEL Corporation

No. de Pieza. AT91SAM7X256
Descripción  AT91 ARM Thumb-based Microcontrollers
Descarga  664 Pages
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Fabricante  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
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AT91SAM7X256 Datasheet(HTML) 33 Page - ATMEL Corporation

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6120D–ATARM–02-Feb-06
AT91SAM7X256/128 Preliminary
• One, two or three bytes for slave address
• Sequential read/write operations
11.9
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
– 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
– Modem Signals Management DTR-DSR-DCD-RI on USART1
– Receiver time-out and transmitter timeguard
– Multi-drop Mode with address generation and detection
• RS485 with driver control signal
• ISO7816, T = 0 or T = 1 Protocols for interfacing with smart cards
– NACK handling, error counter with repetition and iteration limit
• IrDA modulation and demodulation
– Communication at up to 115.2 Kbps
• Test Modes
– Remote Loopback, Local Loopback, Automatic Echo
11.10 Serial Synchronous Controller
• Provides serial synchronous communication links used in audio and telecom applications
• Contains an independent receiver and transmitter and a common clock divider
• Offers a configurable frame sync and data length
• Receiver and transmitter can be programmed to start automatically or on detection of
different event on the frame sync signal
• Receiver and transmitter include a data signal, a clock signal and a frame synchronization
signal
11.11 Timer Counter
• Three 16-bit Timer Counter Channels
– Three output compare or two input capture
• Wide range of functions including:
– Frequency measurement
– Event counting
– Interval measurement
– Pulse generation


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