PIC16F193X Datasheet, PDF (326/418 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology

PIC16F193X/LF193X
REGISTER 23-6: EECON2: EEPROM CONTROL 2 REGISTER
R-0/0
EEUNLK7
bit 7
R-0/0
EEUNLK6
R-0/0
R-0/0
R-0/0
EEUNLK5 EEUNLK4 EEUNLK3
R-0/0
EEUNLK2
R-0/0
EEUNLK1
R-0/0
EEUNLK0
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
EEUNLK<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 23.1.3 “Writing to the Data EEPROM
Memory” for more information.
DS41364A-page 324
Preliminary
© 2008 Microchip Technology Inc.