PIC12F508 データシートの表示（PDF） - Microchip Technology
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PIC12F508 Datasheet PDF : 110 Pages
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PIC12F508/509/16F505
TABLE 3-3: PIC16F505 PINOUT DESCRIPTION
Name
Function
Input
Type
Output
Type
Description
RB0/ICSPDAT
RB1/ICSPCLK
RB2
RB0
TTL
ICSPDAT ST
RB1
TTL
ICSPCLK ST
RB2
TTL
CMOS Bidirectional I/O pin. Can be software programmed for internal
weak pull-up and wake-up from Sleep on pin change.
CMOS In-Circuit Serial Programming™ data pin.
CMOS Bidirectional I/O pin. Can be software programmed for internal
weak pull-up and wake-up from Sleep on pin change.
CMOS In-Circuit Serial Programming clock pin.
CMOS Bidirectional I/O pin.
RB3/MCLR/VPP
RB3
TTL
— Input port. Can be software programmed for internal weak
pull-up and wake-up from Sleep on pin change.
MCLR ST
— Master Clear (Reset). When configured as MCLR, this pin is
an active-low Reset to the device. Voltage on MCLR/VPP must
not exceed VDD during normal device operation or the device
will enter Programming mode. Weak pull-up always on if
configured as MCLR.
VPP
HV
— Programming voltage input.
RB4/OSC2/CLKOUT
RB4
TTL CMOS Bidirectional I/O pin. Can be software programmed for internal
weak pull-up and wake-up from Sleep on pin change.
OSC2
— XTAL Oscillator crystal output. Connections to crystal or resonator in
Crystal Oscillator mode (XT, HS and LP modes only).
CLKOUT — CMOS In EXTRC and INTRC modes, the pin output can be
configured for CLKOUT, which has 1/4 the frequency of OSC1
and denotes the instruction cycle rate.
RB5/OSC1/CLKIN
RB5
TTL CMOS Bidirectional I/O pin.
OSC1 XTAL — Crystal input.
CLKIN ST
— External clock source input.
RC0
RC0
TTL CMOS Bidirectional I/O pin.
RC1
RC1
TTL CMOS Bidirectional I/O pin.
RC2
RC2
TTL CMOS Bidirectional I/O pin.
RC3
RC3
TTL CMOS Bidirectional I/O pin.
RC4
RC4
TTL CMOS Bidirectional I/O pin.
RC5/T0CKI
RC5
TTL CMOS Bidirectional I/O pin.
T0CKI ST
— Clock input to TMR0.
VDD
VDD
—
P Positive supply for logic and I/O pins.
VSS
VSS
—
P Ground reference for logic and I/O pins.
Legend: I = Input, O = Output, I/O = Input/Output, P = Power, — = Not used, TTL = TTL input,
ST = Schmitt Trigger input, HV = High Voltage
© 2009 Microchip Technology Inc.
DS41236E-page 15
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