PIC18FXX20
TABLE 1-2:
PIC18FXX20 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Number
Pin
Buffer
Type
Pin Name
Description
Type
PIC18F6X20 PIC18F8X20
PORTE is a bi-directional I/O port.
RE0/RD/AD8
RE0
2
1
4
I/O
I
ST
Digital I/O.
RD
TTL
Read control for parallel slave port (see
WR and CS pins).
AD8(3)
I/O
TTL
External memory address/data 8.
RE1/WR/AD9
3
RE1
I/O
I
ST
TTL
Digital I/O.
WR
Write control for parallel slave port (see
CS and RD pins).
AD9(3)
I/O
TTL
External memory address/data 9.
RE2/CS/AD10
64
78
RE2
CS
I/O
I
ST
Digital I/O.
TTL
Chip select control for parallel slave port
(see RD and WR).
AD10(3)
I/O
TTL
External memory address/data 10.
RE3/AD11
63
62
61
60
59
77
76
75
74
73
RE3
I/O
I/O
ST
Digital I/O.
AD11(3)
TTL
External memory address/data 11.
RE4/AD12
RE4
I/O
I/O
ST
TTL
Digital I/O.
External memory address/data 12.
AD12
RE5/AD13
RE5
I/O
I/O
ST
TTL
Digital I/O.
External memory address/data 13.
AD13(3)
RE6/AD14
RE6
I/O
I/O
ST
TTL
Digital I/O.
External memory address/data 14.
AD14(3)
RE7/CCP2/AD15
RE7
I/O
I/O
ST
ST
Digital I/O.
CCP2(1,4)
Capture2 input/Compare2 output/
PWM2 output.
AD15(3)
I/O
TTL
External memory address/data 15.
Legend: TTL = TTL compatible input
CMOS = CMOS compatible input or output
ST = Schmitt Trigger input with CMOS levels
Analog = Analog input
I
= Input
= Power
O
= Output
= Open Drain (no P diode to VDD)
P
OD
Note 1: Alternate assignment for CCP2 when CCP2MX is not selected (all Operating modes except
Microcontroller).
2: Default assignment when CCP2MX is set.
3: External memory interface functions are only available on PIC18F8X20 devices.
4: CCP2 is multiplexed with this pin by default when configured in Microcontroller mode. Otherwise, it is
multiplexed with either RB3 or RC1.
5: PORTH and PORTJ are only available on PIC18F8X20 (80-pin) devices.
6: AVDD must be connected to a positive supply and AVSS must be connected to a ground reference for proper
operation of the part in User or ICSP modes. See parameter D001A for details.
DS39609A-page 16
AdvanceInformation
2003 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
