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PIC16F688-E/ST Datasheet(PDF) 74 Page - Microchip Technology |
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PIC16F688-E/ST Datasheet(HTML) 74 Page - Microchip Technology |
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74 / 174 page  PIC16F688 DS41203B-page 72 Preliminary 2004 Microchip Technology Inc. REGISTER 9-1: EEDAT – EEPROM DATA REGISTER (ADDRESS: 9Ah) REGISTER 9-2: EEADR – EEPROM ADDRESS REGISTER (ADDRESS: 9Bh) REGISTER 9-3: EECON1 – EEPROM CONTROL REGISTER 1 (ADDRESS: 9Ch) R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 EEDAT7 EEDAT6 EEDAT5 EEDAT4 EEDAT3 EEDAT2 EEDAT1 EEDAT0 bit 7 bit 0 bit 7-0 EEDATn: Byte Value to Write to or Read From Data EEPROM bits Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ - n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 EEADR7 EEADR6 EEADR5 EEADR4 EEADR3 EEADR2 EEADR1 EEADR0 bit 7 bit 0 bit 7-0 EEADR: Specifies One of 256 Locations for EEPROM Read/Write Operation bits Legend: R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ - n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown R/W-0 U-0 U-0 U-0 R/W-x R/W-0 R/S-0 R/S-0 EEPGD — — — WRERR WREN WR RD bit 7 bit 0 bit 7 EEPGD: Program/Data EEPROM Select bit 1 = Accesses program memory 0 = Accesses data memory bit 6-4 Unimplemented: Read as ‘0’ bit 3 WRERR: EEPROM Error Flag bit 1 = A write operation is prematurely terminated (any MCLR Reset, any WDT Reset during normal operation or BOD detect) 0 = The write operation completed bit 2 WREN: EEPROM Write Enable bit 1 = Allows write cycles 0 = Inhibits write to the data EEPROM bit 1 WR: Write Control bit EEPGD = 1: This bit is ignored EEPGD = 0: 1 = Initiates a write cycle (The bit is cleared by hardware once write is complete. The WR bit can only be set, not cleared, in software.) 0 = Write cycle to the data EEPROM is complete bit 0 RD: Read Control bit 1 = Initiates an memory read (Read takes one cycle. RD is cleared in hardware. The RD bit can only be set, not cleared, in software.) 0 = Does not initiate an memory read Legend: S = Bit can only be set R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ - n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown |
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