PIC16C745/765
TABLE 3-1:
PIC16C745/765 PINOUT DESCRIPTION
Input
Type
Output
Type
Name
Function
Description
MCLR
VPP
ST
Power
Xtal
ST
—
—
Master Clear
MCLR/VPP
OSC1/CLKIN
OSC2/CLKOUT
Programming Voltage
OSC1
CLKIN
OSC2
CLKOUT
—
Crystal/Resonator
—
External Clock Input/ER resistor connection.
Crystal/Resonator
—
Xtal
—
CMOS Internal Clock (FINT/4) Output
RA0
AN0
RA1
AN1
RA2
AN2
RA3
AN3
VREF
RA4
T0CKI
RA5
AN4
ST
AN
ST
AN
ST
AN
ST
AN
AN
ST
ST
ST
AN
CMOS Bi-directional I/O
RA0/AN0
RA1/AN1
RA2/AN2
—
A/D Input
CMOS Bi-directional I/O
A/D Input
CMOS Bi-directional I/O
A/D Input
CMOS Bi-directional I/O
—
—
RA3/AN3/VREF
—
—
A/D Input
A/D Positive Reference
Bi-directional I/O
Timer 0 Clock Input
Bi-directional I/O
A/D Input
OD
—
RA4/T0CKI
RA5/AN4
—
RB0
INT
TTL
ST
CMOS Bi-directional I/O
Interrupt
RB0/INT
—
RB1
RB2
RB3
RB4
RB5
RB1
TTL
TTL
TTL
TTL
TTL
TTL
ST
CMOS Bi-directional I/O
RB2
CMOS Bi-directional I/O
RB3
CMOS Bi-directional I/O
RB4
CMOS Bi-directional I/O with Interrupt on Change
CMOS Bi-directional I/O with Interrupt on Change
CMOS Bi-directional I/O with Interrupt on Change
In-Circuit Serial Programming Clock input
CMOS Bi-directional I/O with Interrupt on Change
CMOS In-Circuit Serial Programming Data I/O
RB5
RB6
RB6/ICSPC
RB7/ICSPD
ICSPC
RB7
TTL
ST
ICSPD
RC0
T1OSO
T1CKI
RC1
ST
—
CMOS Bi-directional I/O
RC0/T1OSO/T1CKI
Xtal
—
T1 Oscillator Output
T1 Clock Input
ST
ST
Xtal
CMOS Bi-directional I/O
RC!/T1OSI/CCP2
T1OSI
CCP2
RC2
—
T1 Oscillator Input
Capture In/Compare Out/PWM Out 2
ST
CMOS Bi-directional I/O
Capture In/Compare Out/PWM Out 1
RC2/CCP1/VUSB
CCP1
VUSB
D-
VUSB
D-
Power
USB
3.3V for pull up resistor
USB Differential Bus
USB Differential Bus
USB
USB
D+
D+
USB
Legend:
OD = open drain, ST = Schmitt Trigger
Note 1: Weak pull-ups. PORT B pull-ups are byte wide programmable.
2: PIC16C765 only.
1999 Microchip Technology Inc.
Advanced Information
DS41124A-page 11
MICROCHIP [ MICROCHIP ]
