PIC16F1946 Datasheet, PDF (122/440 Pages) Microchip Technology – 64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP Technology

PIC16F/LF1946/47
REGISTER 11-6: EECON2: EEPROM CONTROL 2 REGISTER
W-0/0
bit 7
W-0/0
W-0/0
W-0/0
W-0/0
EEPROM Control Register 2
W-0/0
W-0/0
W-0/0
bit 0
Legend:
R = Readable bit
S = Bit can only be set
‘1’ = Bit is set
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
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.
TABLE 11-3: SUMMARY OF REGISTERS ASSOCIATED WITH DATA EEPROM
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
EECON1 EEPGD
CFGS
LWLO
FREE
WRERR WREN
WR
RD
EECON2
EEPROM Control Register 2 (not a physical register)
EEADRL
EEADRL<7:0>
EEADRH
—
EEDATL
EEADRH<6:0
EEDATL<7:0>
EEDATH
—
INTCON
GIE
—
PEIE
TMR0IE
INTE
EEDATH<5:0>
IOCIE
TMR0IF
INTF
IOCIF
PIE2
OSFIE
C2IE
C1IE
EEIE
BCLIE
LCDIE
C3IE
CCP2IE
PIR2
OSFIF
C2IF
C1IF
EEIF
BCLIF
LCDIF
C3IF
CCP2IF
Legend: — = unimplemented location, read as ‘0’. Shaded cells are not used by Data EEPROM module.
* Page provides register information.
Register on
Page
119
107*
118
118
118
118
89
91
95
DS41414A-page 120
Preliminary
 2010 Microchip Technology Inc.