Datasheet

PIC18F2455/2550/4455/4550
DS39632E-page 126 © 2009 Microchip Technology Inc.
TABLE 10-9: PORTE I/O SUMMARY
TABLE 10-10: SUMMARY OF REGISTERS ASSOCIATED WITH PORTE
Pin Function
TRIS
Setting
I/O I/O Type Description
RE0/AN5/
CK1SPP
RE0 0 OUT DIG LATE<0> data output; not affected by analog input.
1 IN ST PORTE<0> data input; disabled when analog input enabled.
AN5 1 IN ANA A/D Input Channel 5; default configuration on POR.
CK1SPP 0 OUT DIG SPP clock 1 output (SPP enabled).
RE1/AN6/
CK2SPP
RE1 0 OUT DIG LATE<1> data output; not affected by analog input.
1 IN ST PORTE<1> data input; disabled when analog input enabled.
AN6 1 IN ANA A/D Input Channel 6; default configuration on POR.
CK2SPP 0 OUT DIG SPP clock 2 output (SPP enabled).
RE2/AN7/
OESPP
RE2 0 OUT DIG LATE<2> data output; not affected by analog input.
1 IN ST PORTE<2> data input; disabled when analog input enabled.
AN7 1 IN ANA A/D Input Channel 7; default configuration on POR.
OESPP 0 OUT DIG SPP enable output (SPP enabled).
MCLR
/VPP/
RE3
MCLR
—
(1)
IN ST External Master Clear input; enabled when MCLRE Configuration bit
is set.
V
PP —
(1)
IN ANA High-voltage detection, used for ICSP™ mode entry detection.
Always available regardless of pin mode.
RE3 —
(1)
IN ST PORTE<3> data input; enabled when MCLRE Configuration bit is
clear.
Legend: OUT = Output, IN = Input, ANA = Analog Signal, DIG = Digital Output, ST = Schmitt Buffer Input
Note 1: RE3 does not have a corresponding TRISE<3> bit. This pin is always an input regardless of mode.
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reset
Values
on page
PORTE
RDPU
(3)
— — —RE3
(1,2)
RE2
(3)
RE1
(3)
RE0
(3)
56
LATE
(3)
— — — — — LATE2 LATE1 LATE0 56
TRISE
(3)
— — — — — TRISE2 TRISE1 TRISE0 56
ADCON1 — — VCFG1 VCFG0 PCFG3 PCFG2 PCFG1 PCFG0 54
CMCON C2OUT C1OUT C2INV C1INV CIS CM2 CM1 CM0 55
SPPCON
(3)
— — — — — — SPPOWN SPPEN 57
SPPCFG
(3)
CLKCFG1 CLKCFG0 CSEN CLK1EN WS3 WS2 WS1 WS0 57
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by PORTE.
Note 1: Implemented only when Master Clear functionality is disabled (MCLRE Configuration bit = 0).
2: RE3 is the only PORTE bit implemented on both 28-pin and 40/44-pin devices. All other bits are
implemented only when PORTE is implemented (i.e., 40/44-pin devices).
3: These registers or bits are unimplemented on 28-pin devices.