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PICDEM2 数据表(PDF) 25 Page - Microchip Technology |
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PICDEM2 数据表(HTML) 25 Page - Microchip Technology |
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25 / 60 page  PICDEM 2 User’s Guide DS30374D-page 20 2001 Microchip Technology Inc. 5.1.2 WRBYTE and RDBYTE Routines The WRBYTE and RDBYTE routines write and read one byte to the serial EEPROM device, respectively. Both routines begin by generating a start bit and then transmitting the slave address and word address. To write to the EEPROM, data followed by a stop bit is transmitted. To read the EEPROM, another start bit and the slave address is transmitted, followed by a data read and transmission of a stop bit. The received data is stored in a file register. Figure 5.6: Write Byte (BSTART) Move Slave address to transmit buffer Generate Start Bit (TX) Transmit Slave address Move Word address to transmit buffer Transmit Word address Move Data to transmit buffer Transmit Data (BSTOP) Generate Stop Bit Return (TX) (TX) |
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