Datasheet

© 2009 Microchip Technology Inc. DS39632E-page 297
PIC18F2455/2550/4455/4550
REGISTER 25-5: CONFIG3H: CONFIGURATION REGISTER 3 HIGH (BYTE ADDRESS 300005h)
R/P-1 U-0 U-0 U-0 U-0 R/P-0 R/P-1 R/P-1
MCLRE — — — — LPT1OSC PBADEN CCP2MX
bit 7 bit 0
Legend:
R = Readable bit P = Programmable bit U = Unimplemented bit, read as ‘0’
-n = Value when device is unprogrammed u = Unchanged from programmed state
bit 7 MCLRE: MCLR
Pin Enable bit
1 =MCLR pin enabled, RE3 input pin disabled
0 = RE3 input pin enabled, MCLR
pin disabled
bit 6-3 Unimplemented: Read as ‘0’
bit 2 LPT1OSC: Low-Power Timer1 Oscillator Enable bit
1 = Timer1 configured for low-power operation
0 = Timer1 configured for higher power operation
bit 1 PBADEN: PORTB A/D Enable bit
(Affects ADCON1 Reset state. ADCON1 controls PORTB<4:0> pin configuration.)
1 = PORTB<4:0> pins are configured as analog input channels on Reset
0 = PORTB<4:0> pins are configured as digital I/O on Reset
bit 0 CCP2MX: CCP2 MUX bit
1 = CCP2 input/output is multiplexed with RC1
0 = CCP2 input/output is multiplexed with RB3