Datasheet

 2011-2017 Microchip Technology Inc. DS40001574D-page 115
PIC16(L)F1938/9
TABLE 11-3: SUMMARY OF REGISTERS ASSOCIATED WITH DATA EEPROM
REGISTER 11-6: EECON2: EEPROM CONTROL 2 REGISTER
W-0/0 W-0/0 W-0/0 W-0/0 W-0/0 W-0/0 W-0/0 W-0/0
EEPROM Control Register 2
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
S = Bit can only be set x = Bit is unknown -n/n = Value at POR and BOR/Value at all other Resets
‘1’ = Bit is set ‘0’ = Bit is cleared
bit 7-0 Data EEPROM Unlock Pattern bits
To unlock writes, a 55h must be written first, followed by an AAh, before setting the WR bit of the
EECON1 register. The value written to this register is used to unlock the writes. There are specific
timing requirements on these writes. Refer to Section 11.2.2 “Writing to the Data EEPROM
Memory” for more information.
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Register on
Page
EECON1 EEPGD CFGS LWLO FREE WRERR WREN WR RD
114
EECON2 EEPROM Control Register 2 (not a physical register)
102*
EEADRL EEADRL<7:0>
113
EEADRH
—
(1)
EEADRH<6:0 113
EEDATL EEDATL<7:0>
113
EEDATH
— — EEDATH<5:0> 113
INTCON GIE PEIE
TMR0IE INTE IOCIE TMR0IF INTF IOCIF
87
PIE2
OSFIE C2IE C1IE EEIE BCLIE LCDIE — CCP2IE
89
PIR2
OSFIF C2IF C1IF EEIF BCLIF LCDIF — CCP2IF
92
Legend: — = unimplemented location, read as ‘0’. Shaded cells are not used by data EEPROM module.
* Page provides register information.
Note 1: Unimplemented, read as ‘1’.