PMOD MICROSD
About the PMOD MICROSD PCB
PMOD MICROSD is an open source PCB design by chipsalliance, published on GitHub under the Apache-2.0 license. It is a 4-layer board measuring 25.4 × 15.2 mm, with 23 components from 12 distinct parts.
Other key parts include the RCLAMP0524P and AIP74LVC1T45GB236TR. By type, the board carries 12 resistors, 4 capacitors, 3 ICs, 2 connectors and 2 diodes.
From the project
PCB libraries and templates for rocket-chip based FPGA/ASIC designs
The Pmod MicroSD provides a microSD card slot to any board that has 3.3V logic and is pin compatible with a 12-pin Pmod port capable of SPI communication.
This board is specially designed to adapt to VCU118, and the pull-up resistor for SDIO is modified to 330 ohm.
This design complies with Digilent Pmod™ Interface Specification 1.2.0.
Note that the pin sequence numbers on the digilent PMOD specification are inconsistent with the PMOD pin sequence numbers of AMD VCU118 on the document. Essentially they are the same, but the numbering of AMD VCU118 uses a double-column staggered odd-even…
Main components on the PMOD MICROSD
PMOD MICROSD bill of materials (BOM)
23 components, 12 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | RCLAMP0524P | USON-10_2.5x1.0mm_P0.5mm | U1, U2 |
| 1 | AIP74LVC1T45GB236TR | SOT-23-6 | U3 |
| 1 | PZ254R-12-12P | PinHeader_2x06_P2.54mm_Horizontal_PMOD | J1 |
| 1 | Micro_SD_Card_Det2 | microSD_HC_Molex_104031-0811 | J2 |
| 1 | NCD1206Y1 | LED_1206_3216Metric | D1 |
| 1 | NCD1206O1 | LED_1206_3216Metric | D2 |
| 2 | 10u | C_0402_1005Metric | C1, C2 |
| 2 | 100n | C_0402_1005Metric | C3, C4 |
| 2 | 200 | R_0402_1005Metric | R1, R2 |
| 5 | 330 | R_0402_1005Metric | R3, R4, R5, R6, R7 |
| 3 | 10k | R_0402_1005Metric | R8, R9, R10 |
| 2 | 6.8k | R_0402_1005Metric | R11, R12 |
PMOD MICROSD design files
The KiCad project lives in the chipsalliance/rocket-pcb repository on GitHub; these links point at the commit this page was built from.
PMOD MICROSD: common questions
How big is the PMOD MICROSD PCB?
The PMOD MICROSD measures 25.4 × 15.2 mm, has 4 copper layers and is 1.617 mm thick.
How many components are on the PMOD MICROSD?
23 components, from 12 distinct parts. The full bill of materials is listed on this page.
Where can I download the PMOD MICROSD design files?
From the chipsalliance/rocket-pcb repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the PMOD MICROSD design in my own project?
Yes, under the terms of its Apache-2.0 license, which chipsalliance chose for the repository.
