PIC18F87K22 Datasheet, PDF (407/548 Pages) Microchip Technology – 64/80-Pin, High-Performance, 1-Mbit Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt XLP Technology

PIC18F87K22 FAMILY
REGISTER 28-5: CONFIG3L: CONFIGURATION REGISTER 3 LOW (BYTE ADDRESS 300004h)
U-0
WAIT⁽¹⁾
bit 7
U-0
U-0
U-0
U-0
U-0
BW⁽¹⁾
ABW1⁽¹⁾
ABW0⁽¹⁾ EASHFT⁽¹⁾
—
U-0
R/P-1
—
RTCOSC
bit 0
Legend:
R = Readable bit
-n = Value at POR
P = Programmable bit
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
bit 6
bit 5-4
bit 3
bit 2-1
bit 0
WAIT: External Bus Wait Enable bit⁽¹⁾
1 = Wait states on the external bus are disabled
0 = Wait states on the external bus are enabled and selected by MEMCON <5:4>
BW: Data Bus Width Select bit⁽¹⁾
1 = 16-Bit Data Width modes
0 = 8-Bit Data Width modes
ABW: External Memory Bus Configuration bits⁽¹⁾
11 = 20-Bit Address mode
10 = 16-Bit Address mode
01 = 12-Bit Address mode
00 = 8-Bit Address mode (Microcontroller mode)
EASHFT: External Address Bus Shift Enable bit⁽¹⁾
1 = Address shifting is enabled; external address is shifted to start at 000000h
0 = Address shifting is disabled; external address bus reflects the PC value
Unimplemented: Read as ‘0’
RTCOSC: RTCC Reference Clock Select bit
1 = RTCC uses SOSC as the reference clock
0 = RTCC uses LF-INTOSC as the reference clock
Note 1: This feature is only available on 80-pin devices.
 2010 Microchip Technology Inc.
Preliminary
DS39960B-page 407