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PIC18F6520-I Datasheet, PDF (18/380 Pages) Micrel Semiconductor – 64/80-Pin High-Performance, 256 Kbit to 1 Mbit Enhanced Flash Microcontrollers with A/D
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PIC18F6520/8520/6620/8620/6720/8720
TABLE 1-2: PIC18FXX20 PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Name
Pin Number
Pin
PIC18F6X20 PIC18F8X20 Type
Buffer
Type
Description
PORTE is a bidirectional I/O port.
RE0/RD/AD8
RE0
RD
AD8(3)
2
4
I/O
ST
Digital I/O.
I
TTL
Read control for Parallel Slave Port
(see WR and CS pins).
I/O
TTL
External memory address/data 8.
RE1/WR/AD9
RE1
WR
AD9(3)
1
3
I/O
ST
Digital I/O.
I
TTL
Write control for Parallel Slave Port
(see CS and RD pins).
I/O
TTL
External memory address/data 9.
RE2/CS/AD10
RE2
CS
AD10(3)
64
78
I/O
ST
Digital I/O.
I
TTL
Chip select control for Parallel Slave
Port (see RD and WR).
I/O
TTL
External memory address/data 10.
RE3/AD11
RE3
AD11(3)
63
77
I/O
ST
Digital I/O.
I/O
TTL
External memory address/data 11.
RE4/AD12
RE4
AD12
62
76
I/O
ST
Digital I/O.
I/O
TTL
External memory address/data 12.
RE5/AD13
RE5
AD13(3)
61
75
I/O
ST
Digital I/O.
I/O
TTL
External memory address/data 13.
RE6/AD14
RE6
AD14(3)
60
74
I/O
ST
Digital I/O.
I/O
TTL
External memory address/data 14.
RE7/CCP2/AD15
59
RE7
CCP2(1,4)
AD15(3)
73
I/O
ST
Digital I/O.
I/O
ST
Capture2 input/Compare2 output/
PWM2 output.
I/O
TTL
External memory address/data 15.
Legend:
TTL = TTL compatible input
ST = Schmitt Trigger input with CMOS levels
I = Input
P = Power
CMOS = CMOS compatible input or output
Analog = Analog input
O
= Output
OD = Open-Drain (no P diode to VDD)
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.
DS39609B-page 16
 2004 Microchip Technology Inc.
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