Mechanical Dimensions & Land Pattern (PLCC-44(16.6x16.6))
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 PLCC-44(16.6x16.6) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — AT27C4096-70JI (PLCC-44(16.6x16.6))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of AT27C4096-70JI (PLCC-44(16.6x16.6))?
Manufactured by MICROCHIP, the AT27C4096-70JI is housed in a PLCC-44(16.6x16.6) package with 44 pins and a 1.27 mm lead pitch. Key pins include: 1 (DeviceType: Multiplexed I/O & Peripheral Pin DeviceType (General)), 2 (VPP: Multiplexed I/O & Peripheral Pin VPP (General)), 3 (CE#: Multiplexed I/O & Peripheral Pin CE# (General)), 4 (O15: Multiplexed I/O & Peripheral Pin O15 (General)), 5 (O14: Multiplexed I/O & Peripheral Pin O14 (General)), 6 (O13: Multiplexed I/O & Peripheral Pin O13 (General)).
What are the IPC-7351B PCB Footprint dimensions for AT27C4096-70JI?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), AT27C4096-70JI (PLCC-44(16.6x16.6)) has a nominal body envelope of 16.60 × 16.60 mm, pitch e = 1.27 mm, and 44 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for AT27C4096-70JI?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for AT27C4096-70JI (MICROCHIP, PLCC-44(16.6x16.6)) 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 (44 pins) & AT27C4096 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | DeviceType | Digital_IO | Signal terminal DeviceType (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: DeviceType. Supported peripheral buses: General. |
| 2 | VPP | Digital_IO | Signal terminal VPP (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: VPP. Supported peripheral buses: General. |
| 3 | CE# | Digital_IO | Signal terminal CE# (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: CE#. Supported peripheral buses: General. |
| 4 | O15 | Digital_IO | Signal terminal O15 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O15. Supported peripheral buses: General. |
| 5 | O14 | Digital_IO | Signal terminal O14 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O14. Supported peripheral buses: General. |
| 6 | O13 | Digital_IO | Signal terminal O13 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O13. Supported peripheral buses: General. |
| 7 | O12 | Digital_IO | Signal terminal O12 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O12. Supported peripheral buses: General. |
| 8 | O11 | Digital_IO | Signal terminal O11 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O11. Supported peripheral buses: General. |
| 9 | O10 | Digital_IO | Signal terminal O10 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O10. Supported peripheral buses: General. |
| 10 | O9 | Digital_IO | Signal terminal O9 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O9. Supported peripheral buses: General. |
| 11 | O8 | Digital_IO | Signal terminal O8 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O8. Supported peripheral buses: General. |
| 12 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 13 | NC | NC | Signal terminal NC (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 14 | O7 | Digital_IO | Signal terminal O7 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O7. Supported peripheral buses: General. |
| 15 | O6 | Digital_IO | Signal terminal O6 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O6. Supported peripheral buses: General. |
| 16 | O5 | Digital_IO | Signal terminal O5 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O5. Supported peripheral buses: General. |
| 17 | O4 | Digital_IO | Signal terminal O4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O4. Supported peripheral buses: General. |
| 18 | O3 | Digital_IO | Signal terminal O3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O3. Supported peripheral buses: General. |
| 19 | O2 | Digital_IO | Signal terminal O2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O2. Supported peripheral buses: General. |
| 20 | O1 | Digital_IO | Signal terminal O1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O1. Supported peripheral buses: General. |
| 21 | O0 | Digital_IO | Signal terminal O0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: O0. Supported peripheral buses: General. |
| 22 | OE# | Digital_IO | Signal terminal OE# (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: OE#. Supported peripheral buses: General. |
| 23 | NC | NC | Signal terminal NC (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 24 | A0 | Digital_IO | Signal terminal A0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A0. Supported peripheral buses: General. |
| 25 | A1 | Digital_IO | Signal terminal A1 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A1. Supported peripheral buses: General. |
| 26 | A2 | Digital_IO | Signal terminal A2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A2. Supported peripheral buses: General. |
| 27 | A3 | Digital_IO | Signal terminal A3 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A3. Supported peripheral buses: General. |
| 28 | A4 | Digital_IO | Signal terminal A4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A4. Supported peripheral buses: General. |
| 29 | A5 | Digital_IO | Signal terminal A5 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A5. Supported peripheral buses: General. |
| 30 | A6 | Digital_IO | Signal terminal A6 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A6. Supported peripheral buses: General. |
| 31 | A7 | Digital_IO | Signal terminal A7 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A7. Supported peripheral buses: General. |
| 32 | A8 | Digital_IO | Signal terminal A8 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A8. Supported peripheral buses: General. |
| 33 | NC | NC | Signal terminal NC (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: NC. Supported peripheral buses: General. |
| 34 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 35 | A9 | Digital_IO | Signal terminal A9 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A9. Supported peripheral buses: General. |
| 36 | A10 | Digital_IO | Signal terminal A10 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A10. Supported peripheral buses: General. |
| 37 | A11 | Digital_IO | Signal terminal A11 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A11. Supported peripheral buses: General. |
| 38 | A12 | Digital_IO | Signal terminal A12 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A12. Supported peripheral buses: General. |
| 39 | A13 | Digital_IO | Signal terminal A13 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A13. Supported peripheral buses: General. |
| 40 | A14 | Digital_IO | Signal terminal A14 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A14. Supported peripheral buses: General. |
| 41 | A15 | Digital_IO | Signal terminal A15 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A15. Supported peripheral buses: General. |
| 42 | A16 | Digital_IO | Signal terminal A16 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A16. Supported peripheral buses: General. |
| 43 | A17 | Digital_IO | Signal terminal A17 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: A17. Supported peripheral buses: General. |
| 44 | VCC | Power_In | Primary positive power supply input (VCC) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V). |











