PIC16F5X
TABLE 2-1:
Name
RA0
RA1
RA2
RA3
RB0
RB1
RB2
RB3
RB4
RB5
RB6/ICSPCLK
RB7/ICSPDAT
T0CKI
MCLR/V
PP
PIC16F54 PINOUT DESCRIPTION
Function
RA0
RA1
RA2
RA3
RB0
RB1
RB2
RB3
RB4
RB5
RB6
ICSPCLK
RB7
ICSPDAT
T0CKI
MCLR
Input
Type
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
ST
TTL
ST
ST
ST
Output
Type
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
—
CMOS
CMOS
—
—
Bidirectional I/O pin
Bidirectional I/O pin
Bidirectional I/O pin
Bidirectional I/O pin
Bidirectional I/O pin
Bidirectional I/O pin
Bidirectional I/O pin
Bidirectional I/O pin
Bidirectional I/O pin
Bidirectional I/O pin
Bidirectional I/O pin
Serial Programming Clock
Bidirectional I/O pin
Serial Programming I/O
Clock input to Timer0. Must be tied to V
SS
or V
DD,
if not in use, to
reduce current consumption.
Active-low Reset to device. Voltage on the MCLR/V
PP
pin must
not exceed V
DD
to avoid unintended entering of Programming
mode.
Programming voltage input
Oscillator crystal input
External clock source input
Oscillator crystal output. Connects to crystal or resonator in
Crystal Oscillator mode.
In RC mode, OSC2 pin can output CLKOUT, which has 1/4 the
frequency of OSC1.
Positive supply for logic and I/O pins
Ground reference for logic and I/O pins
I/O = input/output
—
= Not Used
TTL = TTL input
CMOS = CMOS output
XTAL = Crystal input/output
HV
= High Voltage
Description
V
PP
OSC1/CLKIN
OSC2/CLKOUT
OSC1
CLKIN
OSC2
CLKOUT
V
DD
V
SS
Legend:
I
O
ST
V
DD
V
SS
HV
XTAL
ST
—
—
Power
Power
—
—
—
XTAL
CMOS
—
—
= input
= output
= Schmitt Trigger input
©
2007 Microchip Technology Inc.
DS41213D-page 9
MICROCHIP [ MICROCHIP TECHNOLOGY ]
