PIC16F1827T-I from Microchip, in a SSOP-20-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	RA2/AN2/CPS2/C12IN2-/C12IN+/VREF-/DACOUT	bidirectional	General-purpose I/O RA2. Muxed with ADC channel AN2, capacitive sensing input CPS2, comparator C1/C2 negative input C12IN2-, comparator C1/C2 positive input C12IN+, ADC negative voltage reference VREF-, and 5-bit resistive DAC analog output DACOUT.
2	RA3/AN3/CPS3/C12IN3-/C1IN+/VREF+/C1OUT/CCP3/SRQ	bidirectional	General-purpose I/O RA3. Muxed with ADC channel AN3, capacitive sensing CPS3, comparator C1/C2 negative input C12IN3-, comparator C1 positive input C1IN+, ADC positive voltage reference VREF+, comparator C1 output C1OUT, Capture/Compare/PWM CCP3 (PIC16(L)F1827 only), and SR latch non-inverting output SRQ.
3	RA4/AN4/CPS4/C2OUT/T0CKI/CCP4/SRNQ	bidirectional	General-purpose I/O RA4. Muxed with ADC channel AN4, capacitive sensing CPS4, comparator C2 output C2OUT, Timer0 clock input T0CKI, Capture/Compare/PWM CCP4 (PIC16(L)F1827 only), and SR latch inverting output SRNQ.
4	RA5/MCLR/VPP/SS1	input	Input-only pin RA5. Muxed with active-low Master Clear (Reset) MCLR with internal weak pull-up, High-Voltage programming voltage VPP, and SPI slave-select input SS1.
5	VSS	power_in	Ground reference for logic and I/O.
6	RB0/T1G/CCP1/P1A/INT/SRI/FLT0	bidirectional	General-purpose I/O RB0 with interrupt-on-change and individually enabled weak pull-up. Muxed with Timer1 gate input T1G, Capture/Compare/PWM CCP1, Enhanced PWM output P1A, external interrupt INT, SR latch input SRI, and ECCP auto-shutdown fault input FLT0.
7	RB1/AN11/CPS11/RX/DT/SDA1/SDI1	bidirectional	General-purpose I/O RB1 with interrupt-on-change and pull-up. Muxed with ADC channel AN11, capacitive sensing CPS11, EUSART asynchronous receive RX, EUSART synchronous data DT, I2C data SDA1 (open-drain), and SPI data input SDI1.
8	RB2/AN10/CPS10/MDMIN/TX/CK/RX/DT/SDA2/SDI2/SDO1	bidirectional	General-purpose I/O RB2 with interrupt-on-change and pull-up. Muxed with ADC channel AN10, capacitive sensing CPS10, Data Signal Modulator input MDMIN, EUSART async transmit TX, EUSART sync clock CK, EUSART receive RX / sync data DT, I2C data SDA2 (open-drain), SPI data input SDI2, and SPI data output SDO1.
9	RB3/AN9/CPS9/MDOUT/CCP1/P1A	bidirectional	General-purpose I/O RB3 with interrupt-on-change and pull-up. Muxed with ADC channel AN9, capacitive sensing CPS9, Data Signal Modulator output MDOUT, Capture/Compare/PWM CCP1, and Enhanced PWM output P1A.
10	RB4/AN8/CPS8/SCL1/SCK1/MDCIN2	bidirectional	General-purpose I/O RB4 with interrupt-on-change and pull-up. Muxed with ADC channel AN8, capacitive sensing CPS8, I2C clock SCL1 (open-drain), SPI clock SCK1, and Data Signal Modulator carrier input MDCIN2.
11	RB5/AN7/CPS7/P1B/TX/CK/SCL2/SCK2/SS1	bidirectional	General-purpose I/O RB5 with interrupt-on-change and pull-up. Muxed with ADC channel AN7, capacitive sensing CPS7, Enhanced PWM output P1B, EUSART async transmit TX, EUSART sync clock CK, I2C clock SCL2 (open-drain), SPI clock SCK2, and SPI slave-select SS1.
12	RB6/AN5/CPS5/T1CKI/T1OSI/P1C/CCP2/P2A/ICSPCLK	bidirectional	General-purpose I/O RB6 with interrupt-on-change and pull-up. Muxed with ADC channel AN5, capacitive sensing CPS5, Timer1 external clock T1CKI, Timer1 oscillator input T1OSI, Enhanced PWM P1C, Capture/Compare/PWM CCP2, PWM output P2A, and In-Circuit Serial Programming clock ICSPCLK.
13	RB7/AN6/CPS6/T1OSO/P1D/P2B/MDCIN1/ICSPDAT	bidirectional	General-purpose I/O RB7 with interrupt-on-change and pull-up. Muxed with ADC channel AN6, capacitive sensing CPS6, Timer1 oscillator output T1OSO, Enhanced PWM outputs P1D and P2B, Data Signal Modulator carrier input MDCIN1, and In-Circuit Serial Programming data ICSPDAT.
14	VDD	power_in	Positive supply. 1.8-5.5V for PIC16F1827; 1.8-3.6V for PIC16LF1827. Decouple with a local ceramic capacitor to VSS.
15	RA6/OSC2/CLKOUT/CLKR/P2B/SDO1	bidirectional	General-purpose I/O RA6. Muxed with crystal/resonator oscillator output OSC2 (LP/XT/HS modes), FOSC/4 clock output CLKOUT, programmable Clock Reference output CLKR, Enhanced PWM output P2B, and SPI data output SDO1.
16	RA7/OSC1/CLKIN/P1C/CCP2/P2A	bidirectional	General-purpose I/O RA7. Muxed with crystal/resonator oscillator input OSC1 (LP/XT/HS modes), external clock input CLKIN (EC mode), Enhanced PWM output P1C, Capture/Compare/PWM CCP2, and PWM output P2A.
17	RA0/AN0/CPS0/C12IN0-/SDO2	bidirectional	General-purpose I/O RA0. Muxed with ADC channel AN0, capacitive sensing CPS0, comparator C1/C2 negative input C12IN0-, and SPI data output SDO2 (PIC16(L)F1827 only).
18	RA1/AN1/CPS1/C12IN1-/SS2	bidirectional	General-purpose I/O RA1. Muxed with ADC channel AN1, capacitive sensing CPS1, comparator C1/C2 negative input C12IN1-, and SPI slave-select SS2 input (PIC16(L)F1827 only).

Key specifications

Parameter	Value
Manufacturer	Microchip
Package	SSOP-20-208mil
Category	MCU
Pins	18

Ordering variants

Same part, different packaging or reel option.

PIC16F1827T-II/P
PIC16F1827T-II/SO
PIC16F1827T-II/SS
PIC16F1827T-II/ML
PIC16F1827T-II/MV

CAD (KiCad official)

Symbol: PIC16F1827T-I
Footprint: Package_SO:SSOP-20_5.3x7.2mm_P0.65mm
3D model: SSOP-20-208mil (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`pic16f1827t-i.step`	267 KB	You want the bare part, or you mark your own boards.
`pic16f1827t-i-etched.step`	2.8 MB	You want the part with `PIC16F1827T-I` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 704 faces against 327 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Microchip datasheet (406 pp, sha256 0e7915da61b6eca2, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF