PIC16LF1904 Datasheet, PDF (100/288 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP Technology

PIC16LF1904/6/7
REGISTER 10-6: PMCON2: PROGRAM MEMORY CONTROL 2 REGISTER
W-0/0
bit 7
W-0/0
W-0/0
W-0/0
W-0/0
W-0/0
Program Memory Control Register 2
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
Flash Memory Unlock Pattern bits
To unlock writes, a 55h must be written first, followed by an AAh, before setting the WR bit of the
PMCON1 register. The value written to this register is used to unlock the writes. There are specific
timing requirements on these writes.
TABLE 10-3: SUMMARY OF REGISTERS ASSOCIATED WITH FLASH PROGRAM MEMORY
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Register on
Page
PMCON1
—
CFGS
LWLO
FREE
WRERR WREN
WR
RD
99
PMCON2
Program Memory Control Register 2
100
PMADRL
PMADRL<7:0>
98
PMADRH
—
PMADRH<6:0>
98
PMDATL
PMDATL<7:0>
98
PMDATH
—
—
PMDATH<5:0>
98
INTCON
GIE
PEIE
TMR0IE
INTE
IOCIE
TMR0IF
INTF
IOCIF
72
Legend: — = unimplemented location, read as ‘0’. Shaded cells are not used by the Flash program memory module.
TABLE 10-4: SUMMARY OF CONFIGURATION WORD WITH FLASH PROGRAM MEMORY
Name Bits Bit -/7
Bit -/6
Bit 13/5
Bit 12/4
Bit 11/3
Bit 10/2
Bit 9/1
Bit 8/0
Register
on Page
13:8
—
—
FCMEN
IESO CLKOUTEN
BOREN<1:0>
—
CONFIG1
44
7:0
CP
MCLRE PWRTE
WDTE<1:0>
FOSC<2:0>
13:8
—
—
LVP
DEBUG
—
BORV STVREN PLLEN
CONFIG2
45
7:0
—
—
—
VCAPEN⁽¹⁾
—
—
WRT<1:0>
Legend: — = unimplemented location, read as ‘0’. Shaded cells are not used by the Flash program memory.
DS41569A-page 100
Preliminary
 2011 Microchip Technology Inc.