Datasheet

PIC12(L)F1840
DS40001441D-page 10  2011-2013 Microchip Technology Inc.
RA4/AN3/CPS3/OSC2/
CLKOUT/T1OSO/C1IN1-/CLKR/
SDO
(1)
/CK
(1)
/TX
(1)
/P1B
(1)
/
T1G/MDCIN2
RA4 TTL CMOS General purpose I/O.
AN3 AN — ADC Channel 3 input.
CPS3 AN — Capacitive sensing input 3.
OSC2 — XTAL Crystal/Resonator (LP, XT, HS modes).
CLKOUT — CMOS F
OSC/4 output.
T1OSO XTAL XTAL Timer1 oscillator connection.
C1IN1- AN — Comparator C1 negative input.
CLKR — CMOS Clock Reference output.
SDO — CMOS SPI data output.
CK ST CMOS USART synchronous clock.
TX — CMOS USART asynchronous transmit.
P1B — CMOS PWM output.
T1G ST — Timer1 Gate input.
MDCIN2 ST — Modulator Carrier Input 2.
RA5/CLKIN/OSC1/T1OSI/
T1CKI/SRNQ/P1A
(1)
/CCP1
(1)
/
DT
(1)
/RX
(1)
RA5 TTL CMOS General purpose I/O.
CLKIN CMOS — External clock input (EC mode).
OSC1 XTAL — Crystal/Resonator (LP, XT, HS modes).
T1OSI XTAL XTAL Timer1 oscillator connection.
T1CKI ST — Timer1 clock input.
SRNQ — CMOS SR Latch inverting output.
P1A — CMOS PWM output.
CCP1 ST CMOS Capture/Compare/PWM 1.
DT ST CMOS USART synchronous data.
RX ST — USART asynchronous input.
V
DD VDD Power — Positive supply.
V
SS VSS Power — Ground reference.
TABLE 1-2: PIC12(L)F1840 PINOUT DESCRIPTION (CONTINUED)
Name Function
Input
Type
Output
Type
Description
Legend: AN = Analog input or output CMOS= CMOS compatible input or output OD = Open Drain
TTL = TTL compatible input ST = Schmitt Trigger input with CMOS levels I
2
C™ = Schmitt Trigger input with I
2
C
HV = High Voltage XTAL = Crystal levels
Note 1: Alternate pin function selected with the APFCON (Register 12-1) register.