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README.md

Intro

This repository contains all the hardware design and production files required to build the FunKey-S retro-gaming console electronic PCBA using the KiCAD ECAD tools.

The FunKey S is a small foldable retro-gaming console.

Its electronic parts consist in:

  • 1x main PCB (0.8 mm thickness) with components on both sides, the maximum component height above PCB on both sides is 1.5 mm. Current revision for this board is Revision E
  • 1x 1.54” IPS LCD TFT screen with SPI interface and using a custom flex cable
  • 1x 420 mAh 402540 LiPo battery

FunKey S Block Diagram

The FunKey S PCBA Rev. E contains the following main components:

  • 1x Allwinner V3s SoC with integrated 64MB DDR2 DRAM (LQFP128 package)
  • 1x X-Powers AXP209 companion PMIC chip to provide almost all required power supply rails (QFN48 package)
  • 1x Sylergy SY8088 Buck DC/DC SMPS chip to provide the DRAM power supply rail (SOT23-5 package)
  • 1x NXP PCAL6416 I2C GPIO expander to control all buttons and keypads (except Power Key) (QFN24 package)
  • 1x Diodes Inc. PAM8301 mono audio amplifier (TSOT26 package)
  • 1x 24 MHz main crystal
  • 1x 32.768 kHz RTC crystal
  • 1x Standex-Meder MK24 Reed switch for magnet proximity detection
  • 1x LED for charge indication
  • 1x 8 Ω 0.3 W built-in speaker
  • 1x Micro USB edge-mounted connector
  • 1x Micro SD (TF Card) Push/Push low-profile connector
  • 1x Hirose DF37 0.4 mm pitch miniature LCD connector
  • 1x JST 1 mm pitch battery connector
  • 1x 1.27 mm pitch debug UART header (not mounted)

FunKey Top

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