PIC16F5X
TABLE 2-3:
PIC16F59 PINOUT DESCRIPTION
Input
Type
Output
Type
Name
Function
Description
RA0
RA0
RA1
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
ST
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
RA1
RA2
RA2
RA3
RA3
RB0
RB0
RB1
RB1
RB2
RB2
RB3
RB3
RB4
RB4
RB5
RB5
RB6/ICSPCLK
RB6
ICSPCLK
RB7
—
Serial programming clock
RB7/ICSPDAT
TTL
ST
CMOS Bidirectional I/O pin
CMOS Serial programming I/O
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
CMOS Bidirectional I/O pin
ICSPDAT
RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
RD0
RD1
RD2
RD3
RD4
RD5
RD6
RD7
RE4
RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
RD0
RD1
RD2
RD3
RD4
RD5
RD6
RD7
RE4
RE5
RE6
RE7
T0CKI
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
ST
RE5
RE6
RE7
T0CKI
—
Clock input to Timer0. Must be tied to VSS or VDD, if not in use, to reduce
current consumption.
MCLR/VPP
MCLR
ST
—
Active-low Reset to device. Voltage on the MCLR/VPP pin must not
exceed VDD to avoid unintended entering of Programming mode.
Programming voltage input
VPP
HV
XTAL
ST
—
—
OSC1/CLKIN
OSC1
CLKIN
OSC2
Oscillator crystal input
—
External clock source input
OSC2/CLKOUT
—
XTAL
Oscillator crystal output. Connects to crystal or resonator in Crystal
Oscillator mode.
CLKOUT
—
CMOS In RC mode, OSC2 pin outputs CLKOUT, which has 1/4 the frequency of
OSC1.
VDD
VSS
VDD
VSS
Power
Power
—
—
Positive supply for logic and I/O pins
Ground reference for logic and I/O pins
Legend:
I
= input
O = output
ST = Schmitt Trigger input
I/O = input/output
= Not Used
TTL = TTL input
CMOS = CMOS output
—
XTAL
HV
= Crystal input/output
= High Voltage
© 2007 Microchip Technology Inc.
DS41213D-page 11
MICROCHIP [ MICROCHIP ]
