PIC18C242 MICROCHIP [Microchip Technology], PIC18C242 Datasheet - Page 8
PIC18C242
Manufacturer Part Number
PIC18C242
Description
High-Performance Microcontrollers with 10-Bit A/D
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18C242.pdf
(296 pages)
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PIC18CXX2
TABLE 1-2:
DS39026B-page 8
MCLR/V
NC
OSC1/CLKI
OSC2/CLKO/RA6
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3/V
RA4/T0CKI
RA5/AN4/SS/LVDIN
RA6
Legend: TTL = TTL compatible input
MCLR
V
OSC1
CLKI
OSC2
CLKO
RA6
RA0
AN0
RA1
AN1
RA2
AN2
V
RA3
AN3
V
RA4
T0CKI
RA5
AN4
SS
LVDIN
Pin Name
PP
REF
REF
PP
ST = Schmitt Trigger input with CMOS levels
I = Input
P = Power
-
+
REF
REF
-
+
PIC18C2X2 PINOUT I/O DESCRIPTIONS
Pin Number
DIP
10
—
1
9
2
3
4
5
6
7
SOIC
10
—
1
9
2
3
4
5
6
7
Type
Pin
I/O
I/O
I/O
I/O
I/O
I/O
I/O
—
O
O
P
I
I
I
I
I
I
I
I
I
I
I
I
I
Analog
Analog
Analog
Analog
Analog
Analog
ST/OD
Analog
Analog
Buffer
CMOS
Type
TTL
TTL
TTL
TTL
TTL
TTL
ST
ST
ST
ST
—
—
—
Preliminary
Description
These pins should be left unconnected.
PORTA is a bi-directional I/O port.
CMOS = CMOS compatible input or output
O = Output
OD = Open Drain (no P diode to V
Master clear (reset) input. This pin is an active low reset
to the device.
Programming voltage input.
Oscillator crystal input or external clock source input.
ST buffer when configured in RC mode. CMOS otherwise.
External clock source input. Always associated with
pin function OSC1. (See related OSC1/CLKIN,
OSC2/CLKOUT pins).
Oscillator crystal output. Connects to crystal or
resonator in crystal oscillator mode.
In RC mode, OSC2 pin outputs CLKOUT which has 1/4
the frequency of OSC1, and denotes the instruction
cycle rate.
General Purpose I/O pin.
Digital I/O.
Analog input 0.
Digital I/O.
Analog input 1.
Digital I/O.
Analog input 2.
A/D Reference Voltage (Low) input.
Digital I/O.
Analog input 3.
A/D Reference Voltage (High) input.
Digital I/O. Open drain when configured as output.
Timer0 external clock input.
Digital I/O.
Analog input 4.
SPI Slave Select input.
Low Voltage Detect Input.
See the OSC2/CLKO/RA6 pin.
7/99 Microchip Technology Inc.
DD
)
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