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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST72324BJ2 датащи(PDF) 103 Page - STMicroelectronics |
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ST72324BJ2 датащи(HTML) 103 Page - STMicroelectronics |
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103 / 188 page  ST72324B On-chip peripherals 103/188 10.5 Serial communications interface (SCI) 10.5.1 Introduction The serial communications interface (SCI) offers a flexible means of full-duplex data exchange with external equipment requiring an industry standard NRZ asynchronous serial data format. The SCI offers a very wide range of baud rates using two baud rate generator systems. 10.5.2 Main features ● Full duplex, asynchronous communications ● NRZ standard format (mark/space) ● Dual baud rate generator systems ● Independently programmable transmit and receive baud rates up to 500K baud. ● Programmable data word length (8 or 9 bits) ● Receive buffer full, Transmit buffer empty and End of Transmission flags ● 2 receiver wake-up modes – Address bit (MSB) – Idle line ● Muting function for multiprocessor configurations ● Separate enable bits for Transmitter and Receiver ● 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 – Overrun error detected Table 57. SPI register map and reset values Address (Hex.) Register label 7 6 5 4 3 2 1 0 0021h SPIDR Reset value MSB xx xx x x x LSB x 0022h SPICR Reset value SPIE 0 SPE 0 SPR2 0 MSTR 0 CPOL x CPHA x SPR1 x SPR0 x 0023h SPICSR Reset value SPIF 0 WCOL 0 OVR 0 MODF 00 SOD 0 SSM 0 SSI 0 |
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