PIC18F258 MICROCHIP [Microchip Technology], PIC18F258 Datasheet - Page 12

• Manufacturer Part Number: PIC18F258
• Description: High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18FXX8
TABLE 1-2:
DS41159B-page 10
MCLR/V
NC
OSC1/CLKI
OSC2/CLKO/RA6
Legend:
MCLR
V
OSC1
CLKI
OSC2
CLKO
RA6
PP
Pin Name
PP
TTL = TTL compatible input
ST = Schmitt Trigger input with CMOS levels
I
P
= Input
= Power
PIC18FXX8 PINOUT I/O DESCRIPTIONS
PIC18F248/258
SPDIP, SOIC
10
—
1
9
Pin Number
PDIP
13
14
—
1
PIC18F448/458
12, 13,
33, 34
TQFP
Preliminary
18
30
31
PLCC
28, 40
1, 17,
14
15
2
CMOS = CMOS compatible input or output
Analog = Analog input
O
OD
Type
Pin
I/O
—
O
O
P
I
I
I
= Output
= Open Drain (no P diode to V
CMOS/ST
Buffer
CMOS
Type
TTL
ST
—
—
—
—
Master Clear (input) or
programming voltage (output).
These pins should be left
unconnected.
Oscillator crystal or external clock
input.
Oscillator crystal or clock output.
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. Otherwise CMOS.
External clock source input.
Always associated with pin
function OSC1 (see OSC1/
CLKI, OSC2/CLKO pins).
Oscillator crystal output.
Connects to crystal or
resonator in Crystal Oscillator
mode.
In RC mode, OSC2 pin outputs
CLKO, which has 1/4 the
frequency of OSC1 and
denotes the instruction cycle
rate.
General purpose I/O pin.
 2002 Microchip Technology Inc.
Description
DD
)