# PIC12F509T-E

**Microchip Tech** · Microcontroller Units (MCUs/MPUs/SOCs) · SOIC-8

PIC12F509T-E from Microchip Tech, in a SOIC-8. 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 | VDD | power_in | Positive supply for logic and I/O pins, specified from 2.0V to 5.5V. |
| 2 | GP5/OSC1/CLKIN | bidirectional | Bidirectional I/O pin that also serves as the OSC1 crystal input and the CLKIN external clock source input. |
| 3 | GP4/OSC2 | bidirectional | Bidirectional I/O pin that serves as the OSC2 crystal output in XT and LP modes and as GPIO in other oscillator modes. |
| 4 | GP3/MCLR/VPP | input | Input-only pin; when configured as MCLR it is an active-low device Reset and its voltage must not exceed VDD in normal operation, and VPP is the programming voltage input. |
| 5 | GP2/T0CKI | bidirectional | Bidirectional I/O pin that also serves as the clock input to TMR0 (T0CKI). |
| 6 | GP1/ICSPCLK | bidirectional | Bidirectional I/O pin that also serves as the In-Circuit Serial Programming clock pin, a Schmitt Trigger input in programming mode. |
| 7 | GP0/ICSPDAT | bidirectional | Bidirectional I/O pin with software-programmable weak pull-up and wake-up from Sleep on pin change, that also serves as the In-Circuit Serial Programming data pin. |
| 8 | VSS | power_in | Ground reference for logic and I/O pins. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Single Chip Microcomputer/Microcontroller |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `PIC12F509T-E`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `pic12f509t-e-etched.step` / `pic12f509t-e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pic12f509t-e.step` / `pic12f509t-e.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/pic12f509t-e-datasheet.pdf) (110 pp, sha256 `88ec874746087a49`, retrieved 2026-10-27, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed (audit)), 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/pic12f509t-e-datasheet.pdf)