Mechanical Dimensions & Land Pattern (SSOP-20-208mil)
Extracted from Datasheet & IPC-7351B NormalizedRecommended Companion BOM & Drop-In Equivalents
Passive external components per reference schematic and 1:1 pin-compatible alternatives| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| N/A BOM | Per application circuit SSOP-20-208mil | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — PIC16F18044-I/SS (SSOP-20-208mil)
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of PIC16F18044-I/SS (SSOP-20-208mil)?
Manufactured by MICROCHIP, the PIC16F18044-I/SS is housed in a SSOP-20-208mil package with 20 pins and a 0.65 mm lead pitch, supporting a VCC supply range of 1.8V to 5.5V. Key pins include: 1 (IOCxN[n]=1: Multiplexed I/O & Peripheral Pin IOCxN[n]=1 (General)), 2 (RA5: Multiplexed I/O & Peripheral Pin RA5 (General)), 3 (RA4: Multiplexed I/O & Peripheral Pin RA4 (General)), 4 (MCLR#/VPP/RA3: Multiplexed I/O & Peripheral Pin MCLR#/VPP/RA3 (General)), 5 (RC5: Multiplexed I/O & Peripheral Pin RC5 (General)), 6 (RC4: Multiplexed I/O & Peripheral Pin RC4 (General)).
What are the IPC-7351B PCB Footprint dimensions for PIC16F18044-I/SS?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), PIC16F18044-I/SS (SSOP-20-208mil) has a nominal body envelope of 5.30 × 7.20 mm, pitch e = 0.65 mm, and 20 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for PIC16F18044-I/SS?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for PIC16F18044-I/SS (MICROCHIP, SSOP-20-208mil) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.
Static Reference Appendix: Pinout Table (20 pins) & PIC16F18044 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | IOCxN[n]=1 | Digital_IO | Signal terminal IOCxN[n]=1 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: IOCxN[n]=1. Supported peripheral buses: General. |
| 2 | RA5 | Digital_IO | Signal terminal RA5 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RA5. Supported peripheral buses: General. |
| 3 | RA4 | Digital_IO | Signal terminal RA4 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RA4. Supported peripheral buses: General. |
| 4 | MCLR#/VPP/RA3 | Digital_IO | Signal terminal MCLR#/VPP/RA3 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: MCLR#/VPP/RA3. Supported peripheral buses: General. |
| 5 | RC5 | Digital_IO | Signal terminal RC5 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RC5. Supported peripheral buses: General. |
| 6 | RC4 | Digital_IO | Signal terminal RC4 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RC4. Supported peripheral buses: General. |
| 7 | RC3 | Digital_IO | Signal terminal RC3 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RC3. Supported peripheral buses: General. |
| 8 | RC6 | Digital_IO | Signal terminal RC6 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RC6. Supported peripheral buses: General. |
| 9 | RC7 | Digital_IO | Signal terminal RC7 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RC7. Supported peripheral buses: General. |
| 10 | RB7 | Digital_IO | Signal terminal RB7 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RB7. Supported peripheral buses: General. |
| 11 | RB6 | Digital_IO | Signal terminal RB6 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RB6. Supported peripheral buses: General. |
| 12 | RB5 | Digital_IO | Signal terminal RB5 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RB5. Supported peripheral buses: General. |
| 13 | RB4 | Digital_IO | Signal terminal RB4 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RB4. Supported peripheral buses: General. |
| 14 | RC2 | Digital_IO | Signal terminal RC2 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RC2. Supported peripheral buses: General. |
| 15 | RC1 | Digital_IO | Signal terminal RC1 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RC1. Supported peripheral buses: General. |
| 16 | RC0 | Digital_IO | Signal terminal RC0 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RC0. Supported peripheral buses: General. |
| 17 | RA2 | Digital_IO | Signal terminal RA2 (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RA2. Supported peripheral buses: General. |
| 18 | RA1/ICSPCLK | Digital_IO | Signal terminal RA1/ICSPCLK (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RA1/ICSPCLK. Supported peripheral buses: General. |
| 19 | RA0/ICSPDAT | Digital_IO | Signal terminal RA0/ICSPDAT (I/O, 1.8V to 5.5V domain). Multiplexed alternate functions: RA0/ICSPDAT. Supported peripheral buses: General. |
| 20 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |












