# ModuloATtiny85 ## Description Gay Teal P.K.E. Meter with MP2650 USB-C battery charger section finalized, including 1.5uH power inductor and current-sense monitoring filter placeholders for later integration. ## Project Details - **Owner:** enri21 - **Created:** 3/18/2026 - **Last Updated:** 3/18/2026 - **Visibility:** Public - **System Architecture:** ```mermaid flowchart TD USB[USB-C Input] --> CHG[MP2650 Charger Power Path] BAT[LiIon Battery] --> CHG CHG --> SYS[SYS Rail] SYS --> MCU[ATtiny85 MCU] MCU --> TP[ICSP Test Points] ``` - **Copies:** 1 ## Key Components ### J1 — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal.md) - Manufacturer Part Number: 691137710002 - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - Part Type: Connector - Manufacturer Name: Würth Elektrik **Pins:** - P1 [pin 1] - P2 [pin 2] ### J2 — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal.md) - Manufacturer Part Number: 691137710002 - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - Manufacturer Name: Würth Elektrik - Part Type: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### J3 — [USB-C 2.0 Receptacle](https://www.flux.ai/corynrobinson/usb-c-20-receptacle.md) - Manufacturer Part Number: USB4105-GF-A - Purchase Url: https://www.digikey.com/en/products/detail/gct/USB4105-GF-A/11198441 - Manufacturer Name: GTC - Part Type: USB C - Datasheet URL: https://gct.co/files/drawings/usb4105.pdf **Pins:** - CC1 [pin 6] - CC2 [pin 12] - D- [pin 9] - D- [pin 7] - D+ [pin 10] - D+ [pin 8] - GND [pin 15] - GND [pin 1] - GND [pin 16] - GND [pin 2] - SBU1 [pin 11] - SBU2 [pin 5] - VBUS [pin 14] - VBUS [pin 13] - VBUS [pin 4] - VBUS [pin 3] ### U1 — [MP2650GV-0000-P](https://www.flux.ai/monolithicpower/mp2650gv-0000-p.md) - Product Info Url: https://www.monolithicpower.com/en/catalog/product/view/id/3851?utm_source=ultralibrarian&utm_medium=component_search&utm_campaign=listing - Product Image Url: https://www.monolithicpower.com/pub/media/catalog/product/m/p/mp2650_1_.jpg - Package or Case Code: QFN-30_MP2650_MNP - Manufacturer Name: Monolithic Power Systems - Role: Battery Charger and Power Path - Role Details: MP2650 charger section finalized with 1.5uH inductor on SW node to SYS and IAP/IAN filtered current-sense monitor network; PSYS, IAM, and IBM reserved as analog monitor outputs for later integration - Manufacturer Part Number: MP2650GV-0000-P - Datasheet URL: https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP2650GV **Pins:** - *ACOK [pin 28] - *INT [pin 9] - *PROCHOT [pin 8] - AGND [pin 27] - BATT [pin 7] - BATT [pin 16] - BST1 [pin 23] - BST2 [pin 15] - CP1 [pin 20] - CP2 [pin 24] - IAM [pin 14] - IAN [pin 30] - IAP [pin 29] - IBM [pin 13] - IN [pin 1] - IN [pin 22] - NTC/BATDET [pin 3] - OTG/CMIN [pin 5] - PGND [pin 4] - PGND [pin 19] - PSYS [pin 12] - SCL [pin 11] - SDA [pin 10] - SW1 [pin 21] - SW2 [pin 18] - SYS [pin 6] - SYS [pin 17] - VCC [pin 26] - VMAX_BST [pin 25] - VNTC/CMOUT [pin 2] ### U2 — [ESD5341N](https://www.flux.ai/lcsc/esd5341n.md) - Manufacturer Part Number: ESD5341N - Role Details: VBUS TVS/ESD clamp from USB-C VBUS to GND - Package or Case Code: DFN1006-2L-RD - Role: ESD Protection - JLCPCB Part Class: Extended Part - Package: DFN1006-2 - Manufacturer Name: TECH PUBLIC(台舟) - LCSC Part Number: C3021106 - Part Type: TVS - Forward Voltage: 0.7V at 1AV - Max Reverse Voltage: 5V - Diode Type: TVS Diode **Pins:** - 1 [pin 1] - 2 [pin 2] ### U3 — [ATTINY85-20SU](https://www.flux.ai/adrian95/attiny85-20su.md) - Role: Microcontroller - Role Details: ATtiny85 MCU powered from SYS rail with pogo-pin ICSP access on PB0 PB1 PB2 PB5 - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-2586-AVR-8-bit-Microcontroller-ATtiny25-ATtiny45-ATtiny85_Datasheet-Summary.pdf - Package: SOIC-8 - Manufacturer Part Number: ATTINY85-20SU - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Microcontroller - Manufacturer Name: Microchip **Pins:** - ~RESET~/PB5 [pin 1] - AREF/PB0 [pin 5] - GND [pin 4] - PB1 [pin 6] - PB2 [pin 7] - VCC [pin 8] - XTAL1/PB3 [pin 2] - XTAL2/PB4 [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/enri21/moduloattiny85](https://www.flux.ai/enri21/moduloattiny85).* --- *Generated from [https://www.flux.ai/enri21/moduloattiny85](https://www.flux.ai/enri21/moduloattiny85)*