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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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RM0312 датащи(PDF) 225 Page - STMicroelectronics |
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RM0312 датащи(HTML) 225 Page - STMicroelectronics |
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225 / 275 page  DocID022352 Rev 3 225/275 RM0312 Universal synchronous/asynchronous receiver transmitter (USART) 249 21.2 USART main features • Full duplex, asynchronous communications • NRZ standard format (Mark/Space) • High-precision baud rate generator system – Common programmable transmit and receive baud rates up to fMASTER/16 • Programmable data word length (8 or 9 bits) • Configurable STOP bits - support for 1 or 2 STOP bits • Transmitter clock output for synchronous communication • Separate enable bits for Transmitter and Receiver • Transfer detection flags: – Receive buffer full – Transmit buffer empty – End of Transmission flags • Parity control: – Transmits parity bit – Checks parity of received data byte • 4 error detection flags: – Overrun error – Noise error – Frame error – Parity error • 5 interrupt sources with flags: – Transmit data register empty – Transmission complete – Receive data register full – Idle line received – Parity error • 2 interrupt vectors: – Transmitter interrupt – Receiver interrupt • Reduced power consumption mode • Multi-Processor communication - enter into mute mode if address match does not occur • Wakeup from mute mode (by idle line detection or address mark detection) • 2 receiver wakeup modes: – Address bit (MSB) – Idle line |
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