# PIC16F1826-I

**Microchip Tech** · MICROCHIP · SSOP-20-208mil

PIC16F1826-I from Microchip Tech, in a SSOP-20-208mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RA2 | bidirectional | General purpose I/O that is multiplexed with AN2, CPS2, C12IN2-, C12IN+, VREF- and DACOUT. |
| 2 | RA3 | bidirectional | General purpose I/O that is multiplexed with AN3, CPS3, C12IN3-, C1IN+, VREF+, C1OUT and SRQ. |
| 3 | RA4 | bidirectional | General purpose I/O that is multiplexed with AN4, CPS4, C2OUT, T0CKI and SRNQ. |
| 4 | RA5/MCLR/VPP | input | Input-only pin that serves as RA5, Master Clear (MCLR) with internal weak pull-up, the VPP programming voltage input, or SS1 slave select input. |
| 5 | VSS | power_in | Ground reference. |
| 6 | VSS | power_in | Ground reference. |
| 7 | RB0 | bidirectional | General purpose I/O with interrupt-on-change and weak pull-up, multiplexed with T1G, CCP1, P1A, INT, SRI and FLT0. |
| 8 | RB1 | bidirectional | General purpose I/O with interrupt-on-change and weak pull-up, multiplexed with AN11, CPS11, RX, DT, SDA1 and SDI1. |
| 9 | RB2 | bidirectional | General purpose I/O with interrupt-on-change and weak pull-up, multiplexed with AN10, CPS10, MDMIN, TX, CK, RX, DT and SDO1. |
| 10 | RB3 | bidirectional | General purpose I/O with interrupt-on-change and weak pull-up, multiplexed with AN9, CPS9, MDOUT, CCP1 and P1A. |
| 11 | RB4 | bidirectional | General purpose I/O with interrupt-on-change and weak pull-up, multiplexed with AN8, CPS8, SCL1, SCK1 and MDCIN2. |
| 12 | RB5 | bidirectional | General purpose I/O with interrupt-on-change and weak pull-up, multiplexed with AN7, CPS7, P1B, TX, CK and SS1. |
| 13 | RB6 | bidirectional | General purpose I/O with interrupt-on-change and weak pull-up, multiplexed with AN5, CPS5, T1CKI, T1OSI, P1C and the ICSPCLK serial programming clock. |
| 14 | RB7 | bidirectional | General purpose I/O with interrupt-on-change and weak pull-up, multiplexed with AN6, CPS6, T1OSO, P1D, MDCIN1 and the ICSPDAT programming data I/O. |
| 15 | VDD | power_in | Positive supply. |
| 16 | VDD | power_in | Positive supply. |
| 17 | RA6 | bidirectional | General purpose I/O that is multiplexed with OSC2 crystal/resonator, CLKOUT (FOSC/4), CLKR, P1D and SDO1. |
| 18 | RA7 | bidirectional | General purpose I/O that is multiplexed with OSC1 crystal/resonator, CLKIN external clock input (EC mode) and P1C. |
| 19 | RA0 | bidirectional | General purpose I/O that is multiplexed with AN0, CPS0 and C12IN0-. |
| 20 | RA1 | bidirectional | General purpose I/O that is multiplexed with AN1, CPS1 and C12IN1-. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SSOP-20-208mil |
| Category | Embedded Processors & Controllers |
| Pins | 20 |

## CAD (KiCad official)

- Symbol: `PIC16F1826-I`
- Footprint: `Package_SO:SSOP-20_5.3x7.2mm_P0.65mm`
- 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files: `pic16f1826-i-etched.step` / `pic16f1826-i-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pic16f1826-i.step` / `pic16f1826-i.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](https://ww1.microchip.com/downloads/en/DeviceDoc/41391D.pdf) (406 pp, sha256 `0e7915da61b6eca2`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/pic16f1826-i-datasheet.pdf)