I2C bus is a very popular serial bus, it is simple, taking less interface. This procedure describes the operation of an I2C bus interface EEPROM AT24C02 approach, allowing users to understand the I2C bus protocol read and write methods. Experiment is: pressing a keyboard key CPLD development board DIP switch data will be written to the EEPROM of an address, press another button, the newly written data is read back to the CPLD, and the digital display. (Sw0 to write, sw1 to read)

i2c总线\.xhdl3.xref
.......\cmp_state.ini
.......\db\add_sub_5ph.tdf
.......\..\add_sub_6ph.tdf
.......\..\add_sub_dph.tdf
.......\..\add_sub_rnh.tdf
.......\..\i2c.asm.qmsg
.......\..\i2c.cbx.xml
.......\..\i2c.cmp.cdb
.......\..\i2c.cmp.hdb
.......\..\i2c.cmp.rdb
.......\..\i2c.cmp.tdb
.......\..\i2c.cmp0.ddb
.......\..\i2c.db_info
.......\..\i2c.eco.cdb
.......\..\i2c.fit.qmsg
.......\..\i2c.hier_info
.......\..\i2c.hif
.......\..\i2c.map.cdb
.......\..\i2c.map.hdb
.......\..\i2c.map.qmsg
.......\..\i2c.pre_map.cdb
.......\..\i2c.pre_map.hdb
.......\..\i2c.psp
.......\..\i2c.rtlv.hdb
.......\..\i2c.rtlv_sg.cdb
.......\..\i2c.rtlv_sg_swap.cdb
.......\..\i2c.sgdiff.cdb
.......\..\i2c.sgdiff.hdb
.......\..\i2c.signalprobe.cdb
.......\..\i2c.sld_design_entry.sci
.......\..\i2c.sld_design_entry_dsc.sci
.......\..\i2c.smp_dump.txt
.......\..\i2c.syn_hier_info
.......\..\i2c.tan.qmsg
.......\..\i2c_cmp.qrpt
.......\i2c.asm.rpt
.......\i2c.cdf
.......\i2c.done
.......\i2c.fit.eqn
.......\i2c.fit.rpt
.......\i2c.fit.summary
.......\i2c.flow.rpt
.......\i2c.map.eqn
.......\i2c.map.rpt
.......\i2c.map.summary
.......\i2c.pin
.......\i2c.pof
.......\i2c.qpf
.......\i2c.qsf
.......\i2c.qws
.......\i2c.tan.rpt
.......\i2c.tan.summary
.......\i2c.v
.......\serv_req_info.txt
.......\db
i2c总线

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