PIC18F87J90 Datasheet, PDF (329/450 Pages) Microchip Technology – 64/80-Pin, High-Performance Microcontrollers with LCD Driver and nanoWatt Technology

PIC18F87J90 FAMILY
REGISTER 25-4: CONFIG2H: CONFIGURATION REGISTER 2 HIGH (BYTE ADDRESS 300003h)
U-0
—⁽¹⁾
bit 7
U-0
—⁽¹⁾
U-0
—⁽¹⁾
U-0
—⁽¹⁾
R/WO-1
WDTPS3
R/WO-1
WDTPS2
R/WO-1
WDTPS1
R/WO-1
WDTPS0
bit 0
Legend:
R = Readable bit
WO = Write-Once bit
-n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 7-4
bit 3-0
Unimplemented: Read as ‘0’
WDTPS<3:0>: Watchdog Timer Postscale Select bits
1111 = 1:32,768
1110 = 1:16,384
1101 = 1:8,192
1100 = 1:4,096
1011 = 1:2,048
1010 = 1:1,024
1001 = 1:512
1000 = 1:256
0111 = 1:128
0110 = 1:64
0101 = 1:32
0100 = 1:16
0011 = 1:8
0010 = 1:4
0001 = 1:2
0000 = 1:1
Note 1: The value of these bits in program memory should always be ‘1’. This ensures that the location is
executed as a NOP if it is accidentally executed.
REGISTER 25-5: CONFIG3L: CONFIGURATION REGISTER 3 LOW (BYTE ADDRESS 300004h)
U-0
U-0
U-0
U-0
U-0
—⁽¹⁾
—⁽¹⁾
—⁽¹⁾
—⁽¹⁾
—
bit 7
U-0
R/WO-1
U-0
—
RTCOSC
—
bit 0
Legend:
R = Readable bit
WO = Write-Once bit
-n = Value when device is unprogrammed
U = Unimplemented bit, read as ‘0’
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 7-2
bit 1
bit 0
Unimplemented: Read as ‘0’
RTCOSC: RTCC Reference Clock Select bit
1 = RTCC uses T1OSC/T1CKI as the reference clock
0 = RTCC uses INTRC as the reference clock
Unimplemented: Read as ‘0’
Note 1: The value of these bits in program memory should always be ‘1’. This ensures that the location is
executed as a NOP if it is accidentally executed.
 2010 Microchip Technology Inc.
DS39933D-page 329