Datasheet

 2011-2013 Microchip Technology Inc. DS40001574C-page 13
PIC16(L)F1938/9
TABLE 1-2: PIC16(L)F1938/9 PINOUT DESCRIPTION
Name Function
Input
Type
Output
Type
Description
RA0/AN0/C12IN0-/C2OUT
(1)
/
SRNQ
(1)
/SS
(1)
/VCAP
(2)
/SEG12
RA0 TTL CMOS General purpose I/O.
AN0 AN — A/D Channel 0 input.
C12IN0-
AN — Comparator C1 or C2 negative input.
C2OUT — CMOS Comparator C2 output.
SRNQ — CMOS SR Latch inverting output.
SS
ST — Slave Select input.
V
CAP Power Power Filter capacitor for Voltage Regulator (PIC16F1938/9 only).
SEG12 — AN LCD Analog output.
RA1/AN1/C12IN1-/SEG7 RA1 TTL CMOS General purpose I/O.
AN1 AN — A/D Channel 1 input.
C12IN1-
AN — Comparator C1 or C2 negative input.
SEG7 — AN LCD Analog output.
RA2/AN2/C2IN+/V
REF-/
DACOUT/COM2
RA2 TTL CMOS General purpose I/O.
AN2 AN — A/D Channel 2 input.
C2IN+
AN — Comparator C2 positive input.
VREF- AN — A/D Negative Voltage Reference input.
DACOUT — AN Voltage Reference output.
COM2 — AN LCD Analog output.
RA3/AN3/C1IN+/V
REF+/
COM3
(3)
/SEG15
RA3 TTL CMOS General purpose I/O.
AN3 AN — A/D Channel 3 input.
C1IN+
AN — Comparator C1 positive input.
VREF+ AN — A/D Voltage Reference input.
COM3
(3)
— AN LCD Analog output.
SEG15 — AN LCD Analog output.
RA4/C1OUT/CPS6/T0CKI/SRQ/
CCP5/SEG4
RA4 TTL CMOS General purpose I/O.
C1OUT — CMOS Comparator C1 output.
CPS6 AN — Capacitive sensing input 6.
T0CKI ST — Timer0 clock input.
SRQ
—
CMOS SR Latch non-inverting output.
CCP5 ST CMOS Capture/Compare/PWM5.
SEG4 — AN LCD Analog output.
RA5/AN4/C2OUT
(1)
/CPS7/
SRNQ
(1)
/SS
(1)
/VCAP
(2)
/SEG5
RA5 TTL CMOS General purpose I/O.
AN4 AN — A/D Channel 4 input.
C2OUT — CMOS Comparator C2 output.
CPS7 AN — Capacitive sensing input 7.
SRNQ — CMOS SR Latch inverting output.
SS
ST — Slave Select input.
V
CAP Power Power Filter capacitor for Voltage Regulator (PIC16F1938/9 only).
SEG5 — AN LCD Analog output.
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 XTAL = Crystal
HV = High Voltage I
2
C™ = Schmitt Trigger input with I
2
C levels
Note 1: Pin function is selectable via the APFCON register.
2: PIC16F1938/9 devices only.
3: PIC16(L)F1938 devices only.
4: PORTD is available on PIC16(L)F1939 devices only.
5: RE<2:0> are available on PIC16(L)F1939 devices only.