# EFM8UB31F40G-A-QFN24 (Component) ## Description 8051-compatible microcontroller, 48 MHz, 2.3 to 5.5V, 40K flash, 3.25K RAM, -40 to +85 C, QFN-24 8051 microcontroller PWM UART SPI I2C USB LDOREG ADC QFN24 QFN*1EP*4x4mm*P0.5mm* ## Component Details - **Owner:** kicad-part-library - **Created:** 9/26/2024 - **Last Updated:** 9/26/2024 - **Visibility:** Public - **Manufacturer Part Number:** EFM8UB31F40G-A-QFN24 - **Package or Case Code:** QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm - **Datasheet URL:** https://www.silabs.com/documents/public/data-sheets/efm8ub3-datasheet.pdf - **Manufacturer Name:** Texas Instruments Inc. ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [LCSC](https://www.lcsc.com/product-detail/C20874461.html) | $3.949 | 0 | | [Mouser](https://www.mouser.com/ProductDetail/Silicon-Labs/EFM8UB31F40G-A-QFN24?qs=7EBvPakHacWrhtszXjIPNg%3D%3D) | N/A | N/A | - **Manufacturer:** Texas Instruments - **MPN:** EFM8UB31F40G-A-QFN24 - **Package / Case Code:** 24-QFN - **Pin Count:** 25 ## Pins | Pin | Name | Type | |-----|------|------| | 1 | P0.0 | | | 2 | GND | | | 3 | D+ | | | 4 | D- | | | 5 | VIO | | | 6 | VDD | | | 7 | VREGIN | | | 8 | P2.1/VBUS | | | 9 | ~{RST}/C2CK | | | 10 | P2.0/C2D | | | 11 | P1.6 | | | 12 | P1.5 | | | 13 | P1.4 | | | 14 | P1.3 | | | 15 | P1.2 | | | 16 | P1.1 | | | 17 | P1.0 | | | 18 | P0.7 | | | 19 | P0.6 | | | 20 | P0.5 | | | 21 | P0.4 | | | 22 | P0.3 | | | 23 | P0.2 | | | 24 | P0.1 | | | 25 | GND | | --- *Generated from [https://www.flux.ai/kicad-part-library/efm8ub31f40g-a-qfn24~w85](https://www.flux.ai/kicad-part-library/efm8ub31f40g-a-qfn24~w85)*