# Omni-Touch NFC Biometric Smart Card ## Description NFC-harvested Omni-Touch wearable board with PN7160 frontend, STM32L041 host MCU, SE050 secure element, palm-grid matrix interface, fingerprint UART connector, and status LED on a flex smart-card form factor. ## Project Details - **Owner:** sammy56 - **Created:** 4/29/2026 - **Last Updated:** 4/29/2026 - **Visibility:** Public - **Implementation Details:** Intended final construction is a 2-layer adhesive-less PI flex: 50 um PI core, 18 um copper per side, 25 um coverlay per side, with 0.2 mm local FR4 stiffeners only under the fingerprint and secure-element regions. Flux live layout stackup template remains Standard 2 Layer 1.50 mm and does not represent the intended smart-card laminate; do not treat template thickness as final manufacturing thickness. ## Key Components ### D1 — [BAT1502ELE6327XTMA1](https://www.flux.ai/adrian95/bat1502ele6327xtma1~ej1.md) - Manufacturer Part Number: BAT1502ELE6327XTMA1 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Datasheet URL: https://www.infineon.com/dgdl/Infineon-BAT15-02EL-DS-v01_00-EN.pdf - Manufacturer Name: Infineon Technologies **Pins:** - A [pin A] - K [pin C] ### D2 — [BAT1502ELE6327XTMA1](https://www.flux.ai/adrian95/bat1502ele6327xtma1~ej1.md) - Manufacturer Name: Infineon Technologies - Datasheet URL: https://www.infineon.com/dgdl/Infineon-BAT15-02EL-DS-v01_00-EN.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Manufacturer Part Number: BAT1502ELE6327XTMA1 **Pins:** - A [pin A] - K [pin C] ### D3 — [BAT1502ELE6327XTMA1](https://www.flux.ai/adrian95/bat1502ele6327xtma1~ej1.md) - Manufacturer Part Number: BAT1502ELE6327XTMA1 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Datasheet URL: https://www.infineon.com/dgdl/Infineon-BAT15-02EL-DS-v01_00-EN.pdf - Manufacturer Name: Infineon Technologies **Pins:** - A [pin A] - K [pin C] ### D4 — [BAT1502ELE6327XTMA1](https://www.flux.ai/adrian95/bat1502ele6327xtma1~ej1.md) - Manufacturer Name: Infineon Technologies - Datasheet URL: https://www.infineon.com/dgdl/Infineon-BAT15-02EL-DS-v01_00-EN.pdf - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: BAT1502ELE6327XTMA1 **Pins:** - A [pin A] - K [pin C] ### J1 — [0522070885](https://www.flux.ai/adrian95/0522070885~j3x.md) - Manufacturer Part Number: 0522070885 - Datasheet URL: https://datasheet.datasheetarchive.com/originals/distributors/SFDatasheet-1/sf-00034199.pdf - Role Details: R502-F electrical interface placeholder; use six pins for VCC, GND, TXD, RXD, WAKEUP/IRQ, VT - Manufacturer Name: Molex - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: 522070885 - Role: Placeholder Connector - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - MP1 [pin MP1] - MP2 [pin MP2] ### J2 — [528081471](https://www.flux.ai/lcsc/528081471~y3ef.md) - Package or Case Code: FPC-SMD_14P-P1.00_528081471 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: 528081471 - Manufacturer Name: MOLEX - Role: Placeholder Connector - Role Details: Palm_Print_Capacitive_Grid matrix placeholder connector; pins map to R1-R8 and C1-C6 - LCSC Part Number: C277651 - Part Type: FFC/FPC Connectors **Pins:** - 1 [pin 1] - 10 [pin 10] - 11 [pin 11] - 12 [pin 12] - 13 [pin 13] - 14 [pin 14] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] ### J3 — [3220-10-0300-00](https://www.flux.ai/adrian95/3220-10-0300-00~4yk.md) - Datasheet URL: https://www.cnctech.us/pdfs/3220-XX-0300-00_.pdf - Package or Case Code: CNC_3220-10-0300-00 - Manufacturer Part Number: 3220-10-0300-00 - Manufacturer Name: CNC Tech - Part Type: Connector **Pins:** - 1 [pin 1] - 10 [pin 10] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] ### LED1 — [LTST-C191KGKT](https://www.flux.ai/jecstronic/ltst-c191kgkt~eii.md) - Manufacturer Name: Lite-On Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://optoelectronics.liteon.com/upload/download/DS22-2000-228/LTST-C191KGKT.PDF - Manufacturer Part Number: LTST-C191KGKT - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### U3 — [SE050E2HQ1/Z01Z3Z](https://www.flux.ai/adrian95/se050e2hq1z01z3z~c7v.md) - Manufacturer Name: NXP USA Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.nxp.com/docs/en/package-information/SOT1969-1.pdf - Manufacturer Part Number: SE050E2HQ1/Z01Z3Z - Part Type: Integrated Circuit **Pins:** - ENA [pin 11] - EP [pin 21] - ISO_14443_LA [pin 17] - ISO_14443_LB [pin 1] - ISO_7816_CLK [pin 13] - ISO_7816_IO1 [pin 3] - ISO_7816_IO2 [pin 16] - ISO_7816_RST_N [pin 14] - L2C_SCL [pin 10] - L2C_SDA [pin 9] - N.C._1 [pin 2] - N.C._2 [pin 4] - N.C._3 [pin 5] - N.C._4 [pin 6] - N.C._5 [pin 7] - N.C._6 [pin 8] - N.C._7 [pin 20] - VCC [pin 18] - VIN [pin 12] - VOUT [pin 15] - VSS [pin 19] ### U4 — [PN7160B1HN/C100E](https://www.flux.ai/jecstronic/pn7160b1hnc100e~5g.md) - Manufacturer Name: NXP USA Inc. - Manufacturer Part Number: PN7160B1HN/C100E - Datasheet URL: https://www.nxp.com/docs/en/data-sheet/PN7160_PN7161.pdf - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 2C_SCL/SPI_SCK [pin 7] - ANT1 [pin 23] - ANT2 [pin 24] - CLK_REQ [pin 40] - DCDC_EN [pin 37] - DWL_REQ [pin 2] - EPAD [pin 41] - I 2C_ADR0/SPI_NSS [pin 1] - I 2C_ADR1/SPI_MOSI [pin 3] - I 2C_SDA/SPI_MISO [pin 5] - i.c [pin 11] - i.c [pin 38] - IRQ [pin 8] - n.c. [pin 33] - n.c. [pin 34] - n.c. [pin 35] - n.c. [pin 32] - n.c. [pin 36] - NFC_CLK_XTAL1 [pin 30] - RXN [pin 15] - RXP [pin 16] - TVDD_IN [pin 18] - TX1 [pin 21] - TX2 [pin 19] - VBAT [pin 28] - VBAT2 [pin 12] - VDD [pin 27] - VDD_IN2 [pin 22] - VDD(A) [pin 26] - VDD(D) [pin 31] - VDD(HF) [pin 25] - VDD(PAD) [pin 6] - VDD(TX) [pin 14] - VDD(UP) [pin 13] - VDD(VMID) [pin 17] - VEN [pin 10] - VSS(A) [pin 9] - VSS(PAD) [pin 4] - VSS(TX) [pin 20] - WKUP_REQ [pin 39] - XTAL2 [pin 29] ### U5 — [STM32L041K6U6](https://www.flux.ai/vasyl/stm32l041k6u6~nvr.md) - Datasheet URL: https://www.st.com/content/ccc/resource/technical/document/datasheet/c6/fd/d9/98/8e/95/41/a1/DM00152023.pdf/files/DM00152023.pdf/jcr:content/translations/en.DM00152023.pdf - Manufacturer Name: STMicroelectronics - Part Type: Microcontroller - Manufacturer Part Number: STM32L041K6U6 **Pins:** - BOOT0 [pin 31] - NRST [pin 4] - PA0 [pin 6] - PA1 [pin 7] - PA10 [pin 20] - PA11 [pin 21] - PA12 [pin 22] - PA13 [pin 23] - PA14 [pin 24] - PA15 [pin 25] - PA2 [pin 8] - PA3 [pin 9] - PA4 [pin 10] - PA5 [pin 11] - PA6 [pin 12] - PA7 [pin 13] - PA8 [pin 18] - PA9 [pin 19] - PB0 [pin 14] - PB1 [pin 15] - PB2 [pin 16] - PB3 [pin 26] - PB4 [pin 27] - PB5 [pin 28] - PB6 [pin 29] - PB7 [pin 30] - PB8 [pin 32] - PC14 [pin 2] - PC15 [pin 3] - VDD [pin 17] - VDD [pin 1] - VDDA [pin 5] - VSS [pin 33] ### U6 — [TPS78233DDCT](https://www.flux.ai/adrian95/tps78233ddct~ndz.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Datasheet URL: https://www.ti.com/product/TPS782?HQS=TI-null-null-octopart-df-pf-null-wwe - Manufacturer Part Number: TPS78233DDCT - Manufacturer Name: Texas Instruments **Pins:** - EN [pin 3] - GND [pin 2] - GND [pin 4] - IN [pin 1] - OUT [pin 5] ### Y2 — [ABM8-27.120MHZ-B4-T](https://www.flux.ai/jecstronic/abm8-27p120mhz-b4-t~a48.md) - Manufacturer Name: Abracon LLC - Manufacturer Part Number: ABM8-27.120MHZ-B4-T - Part Type: Oscillator - License: https://creativecommons.org/licenses/by/4.0/ - Frequency: 27.12MHz - Datasheet URL: https://abracon.com/Resonators/abm8.pdf **Pins:** - P1 [pin 1] - P2 [pin 2] - P3 [pin 3] - P4 [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/sammy56/omni-touch-nfc-biometric-smart-card~er](https://www.flux.ai/sammy56/omni-touch-nfc-biometric-smart-card~er).* --- *Generated from [https://www.flux.ai/sammy56/omni-touch-nfc-biometric-smart-card~er](https://www.flux.ai/sammy56/omni-touch-nfc-biometric-smart-card~er)*