4 layers50 × 22.9 mm
2 layers19.7 × 39 mm
Eprom usb emulator sch
dev-board-tech/eprom-usb-emulator3A 28 Pin DIP EEPROM/EPROM/RAM USB emulator
- Size
- 19.7 × 39 mm
- Copper layers
- 2
- Thickness
- 0.8 mm
- Parts
- 39
- Nets
- 97
- Pads
- 251
- Tracks, vias
- 1,083, 76
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 5 Apr 2024
- Updated
- 4 Aug 2026
Overview
Eprom usb emulator sch is an open-source printed circuit board by dev-board-tech, from the dev-board-tech/eprom-usb-emulator repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 19.7 × 39 mm with 39 parts on 97 nets, routed with 1,083 tracks and 76 vias.
It is built around the ICE40UP5K-SG48ITR50, CH330N and BC817W, with the CDBU0520 among its other parts. Its parts include 11 resistors, 8 ICs, 6 capacitors, 3 diodes and 2 connectors. It belongs with the FPGA and CPLD boards of this library.
Main components
4
ICE40UP5K-SG48ITR50
QFN-48QFN-48 Programmable Logic Device (CPLDs/FPGAs) ROHSLatticeProgrammable Logic Device (CPLDs/FPGAs)
CH330N
SOP-8-20℃~+70℃ 15mA 2Mbps 3.3V、5V Transceiver SOP-8 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
BC817W
SOT-323-3100 100MHz 100nA 200mW 45V 500mA 700mV NPN SOT-323-3 Bipolar (BJT) ROHSNexperiaBipolar (BJT)
CDBU0520
SOD-523F1 Independent 100uA@20V 20V 2A 470mV@500mA 500mA SOD-523F Schottky Diodes ROHSComchipSchottky Diodes
README
README.mdeprom-usb-emulator
A USB EPROM EEPROM RAM emulator
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R7, R8, R10 |
| 4 | 1K | dev-board-tech:R_Array_Convex_4x0402 | RN1, RN2, RN3, RN4 |
| 4 | 1uF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C4 |
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric | C5, C6 |
| 2 | 2.2K | Resistor_SMD:R_0603_1608Metric | R4, R6 |
| 2 | 22R | Resistor_SMD:R_0402_1005Metric | R5, R11 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D2, D4 |
| 1 | 1k | dev-board-tech:R_Array_Convex_4x0402 | RN5 |
| 1 | 22R | Resistor_SMD:R_1206_3216Metric | R9 |
| 1 | 25LC_SO8 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | 27C512 | dev-board-tech:28PIN_EPROM_EMULATOR_DIP-28_W15.24mm | U6 |
| 1 | ASDMB-xxxMHz | Oscillator:Oscillator_SMD_Abracon_ASDMB-4Pin_2.5x2.0mm | U8 |
| 1 | BC817W | Package_TO_SOT_SMD:SOT-323_SC-70 | Q1 |
| 1 | CDBU0520 | Diode_SMD:D_SOD-523 | D1 |
| 1 | CDONE | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | CH330N | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | ICE40UP5K-SG48ITR | dev-board-tech:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U2 |
| 1 | MCP1700-1202E_SOT23 | Package_TO_SOT_SMD:SOT-23 | U1 |
| 1 | MCP1700-3302E_SOT23 | Package_TO_SOT_SMD:SOT-23 | U3 |
| 1 | PWR_SRC | dev-board-tech:SW_SPDT_PCM12 | SW2 |
| 1 | RST | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW1 |
| 1 | RST_O | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J3 |
| 1 | SN74LXC8T245-Q1 | Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm | U5 |
| 1 | USB_C_Receptacle_PCB | dev-board-tech:USB-C_PCB_Female | J1 |
Questions
How big is the Eprom usb emulator sch PCB?
It measures 19.7 × 39 mm and has 2 copper layers, 0.8 mm thick.
What parts does the Eprom usb emulator sch use?
39 parts, built around the ICE40UP5K-SG48ITR50, CH330N, BC817W and CDBU0520. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Eprom usb emulator sch KiCad files?
From the dev-board-tech/eprom-usb-emulator repository on GitHub, at the commit this page was made from: the board is eeprom-usb-emulator-sch/eprom-usb-emulator-sch.kicad_pcb and its schematic eeprom-usb-emulator-sch/eprom-usb-emulator-sch.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Eprom usb emulator sch design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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