2 layers100 × 64.7 mm
2 layers100 × 64.7 mm
DevRam
Danjovic/MSX43Coletânea de projetos para MSX
- Size
- 100 × 64.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 101
- Pads
- 276
- Tracks, vias
- 808, 52
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 28 Oct 2016
- Updated
- 12 Oct 2026
Overview
DevRam is an open-source printed circuit board by Danjovic, from the Danjovic/MSX repository on GitHub, published under the GPL-2.0 licence. It is a 2-layer board of 100 × 64.7 mm with 37 parts on 101 nets, routed with 808 tracks and 52 vias.
It is built around the 74AHC541D, 74HC595 and 74AHCT595D, with the HM62256BLP-7, BC338 and WS2812B among its other parts. Its parts include 12 resistors, 9 capacitors, 7 ICs, 2 diodes and 2 transistors. It belongs with the ESP32 and RISC-V boards of this library.
Main components
6
74AHC541D
SO-20-300mil-40℃~+125℃ 1 2V~5.5V 74AHC 8 80uA 8mA 8mA 9ns@5.5V,50pF Schmitt trigger Tri-State Unidirectional SO-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffer/Driver/Transceiver
74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift Registers74AHCT595D
SOP-16-40℃~+125℃ 1 110MHz 4.5V~5.5V 5.3ns@5V,50pF 500mW 74AHCT 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSNexperiaShift Registers
HM62256BLP-7
DIP28DIP28 New Arrivals ROHSHITUncategorised
BC338
TO-921 NPN 100MHz 25V 5V 625mW 630 700mV 800mA NPN TO-92 Bipolar (BJT) ROHSDDFBipolar (BJT)
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
README
README.mdMSX
Coletânea de projetos para MSX
-
- Cartucho Caps Lock para Expert, descrito em http://danjovic.blogspot.com/2016/10/cartucho-caps-lock-para-expert.html
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100n | Capacitor_THT:C_Disc_D7.5mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5, C6, C7 |
| 6 | 1k | Resistor_SMD:R_0805_2012Metric | R7, R8, R9, R10, R11, R12 |
| 4 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3, R4, R5 |
| 3 | 74AHC541 | Package_DIP:DIP-20_W7.62mm | U1, U5, U6 |
| 2 | 74HC595 | Package_DIP:DIP-16_W7.62mm | U2, U7 |
| 2 | BC338 | Package_TO_SOT_THT:TO-92 | Q1, Q2 |
| 1 | 100n | Capacitor_SMD:C_0805_2012Metric | C9 |
| 1 | 100u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C8 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 470 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6 |
| 1 | 74AHCT595 | Package_DIP:DIP-16_W7.62mm | U4 |
| 1 | Conn_01x14_Socket | Connector_PinHeader_2.54mm:PinHeader_1x14_P2.54mm_Vertical | J1 |
| 1 | ESP32-C3_SUPERMINI | esp32c3:MODULE_ESP32-C3_SUPERMINI | M1 |
| 1 | HM62256BLP | Package_DIP:DIP-28_W7.62mm | U3 |
| 1 | LED | LED_THT:LED_D3.0mm_Horizontal_O1.27mm_Z6.0mm | D1 |
| 1 | SW_Push | Button_Switch_THT:SW_SPST_Omron_B3F-315x_Angled | SW1 |
| 1 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D2 |
| 1 | ~ | MSX-Cart:MSXCART | CN1 |
The 36 most common of 37 parts.
Questions
How big is the DevRam PCB?
It measures 100 × 64.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the DevRam use?
37 parts, built around the 74AHC541D, 74HC595, 74AHCT595D and HM62256BLP-7. 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 DevRam KiCad files?
From the Danjovic/MSX repository on GitHub, at the commit this page was made from: the board is DevRamCart/circuit/rev-/DevRam.kicad_pcb and its schematic DevRamCart/circuit/rev-/DevRam.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DevRam design in my own project?
Its repository publishes it under the GPL-2.0 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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