component
CY8C20055-24LKXI
Public Made by Adomby adom
Cypress Semicon Microcontroller Units (MCUs/MPUs/SOCs), QFN-16(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownCY8C20055-24LKXI
Cypress Semicon · Microcontroller Units (MCUs/MPUs/SOCs) · QFN-16(3x3)
CY8C20055-24LKXI from Cypress Semicon, in a QFN-16(3x3). 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 | P2[5] | bidirectional | General purpose digital I/O with analog input capability; also XTAL Out. |
| 2 | P2[3] | bidirectional | General purpose digital I/O with analog input capability; also XTAL In. |
| 3 | P1[7] | bidirectional | 5 mA high-drive, regulated-output-option I/O with analog input; I2C SCL (SPI SS is not available in CY8C20055). |
| 4 | P1[5] | bidirectional | 5 mA high-drive, regulated-output-option I/O with analog input; I2C SDA (SPI MISO is not available in CY8C20055). |
| 5 | P1[3] | bidirectional | 5 mA high-drive, regulated-output-option I/O with analog input; SPI CLK (not available in CY8C20055). |
| 6 | P1[1] | bidirectional | 5 mA high-drive, regulated-output-option I/O with analog input; ISSP clock pin (not High Z at POR), I2C SCL, SPI MOSI (SPI not available in CY8C20055). |
| 7 | Vss | power_in | Ground pin. |
| 8 | P1[0] | bidirectional | 5 mA high-drive, regulated-output-option I/O with analog input; ISSP data pin (not High Z at POR), I2C SDA, SPI CLK (SPI not available in CY8C20055). |
| 9 | P1[2] | bidirectional | 5 mA high-drive, regulated-output-option I/O with analog input. |
| 10 | P1[4] | bidirectional | 5 mA high-drive, regulated-output-option I/O with analog input; optional external clock EXTCLK. |
| 11 | XRES | input | Active high external reset with internal pull down. |
| 12 | P0[4] | bidirectional | 5 mA high-drive I/O with analog input. |
| 13 | Vdd | power_in | Power pin. |
| 14 | P0[7] | bidirectional | 5 mA high-drive I/O with analog input. |
| 15 | P0[3] | bidirectional | 5 mA high-drive I/O with analog input; integrating input. |
| 16 | P0[1] | bidirectional | 5 mA high-drive I/O with analog input; integrating input. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Cypress Semicon |
| Package | QFN-16(3x3) |
| Category | Single Chip Microcomputer/Microcontroller |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
CY8C20055-24LKXI - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: QFN-16(3x3) (KiCad packages3D, STEP)
- 3D model files:
cy8c20055-24lkxi-etched.step/cy8c20055-24lkxi-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cy8c20055-24lkxi.step/cy8c20055-24lkxi.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Cypress Semicon datasheet (275 pp, sha256
c61db78d674ccf72, retrieved 2026-10-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-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).