PIC16LF1508 Datasheet, PDF (109/384 Pages) Microchip Technology – 20-Pin Flash, 8-Bit Microcontrollers with nanoWatt XLP Technology

PIC16(L)F1508/9
REGISTER 10-5: PMCON1: PROGRAM MEMORY CONTROL 1 REGISTER
U-1⁽¹⁾
—
bit 7
R/W-0/0
CFGS
R/W-0/0
LWLO
R/W/HC-0/0 R/W/HC-x/q⁽²⁾
FREE
WRERR
R/W-0/0
WREN
R/S/HC-0/0
WR
R/S/HC-0/0
RD
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
HC = Bit is cleared by hardware
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Note 1:
2:
3:
Unimplemented: Read as ‘1’
CFGS: Configuration Select bit
1 = Access Configuration, User ID and Device ID Registers
0 = Access Flash program memory
LWLO: Load Write Latches Only bit⁽³⁾
1 = Only the addressed program memory write latch is loaded/updated on the next WR command
0 = The addressed program memory write latch is loaded/updated and a write of all program memory write latches
will be initiated on the next WR command
FREE: Program Flash Erase Enable bit
1 = Performs an erase operation on the next WR command (hardware cleared upon completion)
0 = Performs a write operation on the next WR command
WRERR: Program/Erase Error Flag bit
1 = Condition indicates an improper program or erase sequence attempt or termination (bit is set automatically
on any set attempt (write ‘1’) of the WR bit).
0 = The program or erase operation completed normally.
WREN: Program/Erase Enable bit
1 = Allows program/erase cycles
0 = Inhibits programming/erasing of program Flash
WR: Write Control bit
1 = Initiates a program Flash program/erase operation.
The operation is self-timed and the bit is cleared by hardware once operation is complete.
The WR bit can only be set (not cleared) in software.
0 = Program/erase operation to the Flash is complete and inactive.
RD: Read Control bit
1 = Initiates a program Flash 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 a program Flash read.
Unimplemented bit, read as ‘1’.
The WRERR bit is automatically set by hardware when a program memory write or erase operation is started (WR = 1).
The LWLO bit is ignored during a program memory erase operation (FREE = 1).
 2011 Microchip Technology Inc.
Preliminary
DS41609A-page 109