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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST72344K2 датащи(PDF) 167 Page - STMicroelectronics |
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ST72344K2 датащи(HTML) 167 Page - STMicroelectronics |
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167 / 247 page  ST72344xx, ST2345xx On-chip peripherals Doc ID 12321 Rev 6 167/247 11.7 I2C triple slave interface with DMA (I2C3S) 11.7.1 Introduction The I2C3S interface provides three I2C slave functions, supporting both standard (up to 100 kHz) and fast I2C mode (100 to 400 kHz). Special features are provided for: ● Full-speed emulation of standard I2C E2PROMs ● Receiving commands to perform user-defined operations such as IAP 11.7.2 Main features ● Three user configurable independent slave addresses can be individually enabled ● 2x 256 bytes and 1x 128 bytes buffers with fixed addresses in RAM ● 7-bit addressing ● DMA transfer to/from I2C bus and RAM ● Standard (transfers 256 bytes at up to 100 kHz) ● Fast mode (transfers 256 bytes at up to 400 kHz) ● Transfer error detection and handling ● 3 interrupt flags per address for maximum flexibility ● Two interrupt request lines (one for Slaves 1 and 2, the other for Slave 3) ● Full emulation of standard I2C EEPROMs: – Supports 5 read/write commands and combined format –No I2C clock stretching – Programmable page size (8/16 bytes) or full buffer – Configurable write protection ● Data integrity and byte-pair coherency when reading 16-bit words from I2C bus |
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