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Rp2040-logic analyzer

ramtuc·rp2040-logic-analyzer·hardware/rp2040-logic-analyzer.kicad_pcb

Rp2040-logic analyzer PCB layout, top view — open source RP2040/RP2350 board by ramtuc

About the Rp2040-logic analyzer PCB

Rp2040-logic analyzer is an open source RP2040/RP2350 PCB design by ramtuc, published on GitHub under the CERN-OHL-P-2.0 license. It is a 4-layer board measuring 65 × 45 mm, with 73 components from 22 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q128JVSIQ, TXU0104PWR, AMS1117-3.3 and USBLC6-2SC6. By type, the board carries 27 capacitors, 27 resistors, 8 ICs, 4 connectors, 3 switches and 3 diodes.

It belongs with the test & measurement designs in this gallery.

From the project

RP2040 + TXU0104 16ch logic analyzer board for PulseView (sigrok-pico), 4-layer, JLCPCB PCBA

RP2040 と TI の TXU0104（レベル変換 ×4）で作った、16ch のロジックアナライザ基板です。1.8V〜5V のロジックをそのまま受け、sigrok-pico のファームを書くと PulseView（sigrok）から I2C・SPI・UART をデコードできます。4 層・65 × 45mm で、部品実装は JLCPCB の PCBA に任せています。

- A0 基板の検証は第3回（実戦投入）で一区切りです。 第2回で立ち上げ（3.3V レール 3.303V・水晶 12MHz・RP2040 内蔵 LDO 1.096V・PulseView で I2C をデコード）、第3回でしきい値・サンプリング上限・時間窓を実測し、SPI／UART／サーボ PWM をデコードしました。第3回の実測値（A0・SW1 改修済み・picodig26.uf2）: - 1.8V ロジックは EXT で読めます。 VREF = 1.806V（EXT）で VT+ 1.399V／VT− 0.732V。雑音を抑えた入力で測り直した 3.3V 位置は VT+ 2.401V／VT− 1.395V、5V 位置は VT+ 3.290V／VT− 2.138V（0.05V 刻みの掃引）。VT+ は TXU0104 データシートの近い VCCA 行の上限より高めで、原因は未特定です -…

Rp2040-logic analyzer, from the project README
From the project README

Main components on the Rp2040-logic analyzer

RP2040W25Q128JVSIQTXU0104PWRAMS1117-3.3USBLC6-2SC6

Rp2040-logic analyzer bill of materials (BOM)

73 components, 22 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040
U1
1
W25Q128JVSIQ
U2
4
TXU0104PWR
U3, U4, U5, U6
1
AMS1117-3.3
U7
1
USBLC6-2SC6
U8
1
C20625731
ABM8-272-T3 12MHz
X1
1
TYPE-C-31-M-12
J1
1
PROBE 2x16
J2
1
VREF_EXT
J3
1
ADC 1x3 (DNF)
J4
1
SK13D07VG5
SW1
2
TS-1187A-B-A-B
SW2, SW3
3
C2286
LED RED
D1, D2, D3
20
100NF
100nF
C1, C2, C3, C4, C5, C6, C7, C8 +12
3
1µF
C21, C22, C27
2
15PF
15pF
C23, C24
2
10µF
C25, C26
16
100Ω
R1, R2, R3, R4, R5, R6, R7, R8 +8
2
5.1kΩ
R17, R18
2
27Ω
R19, R20
Show 2 more
QtyPartRefs
5
1kΩ
R21, R22, R25, R26, R27
2
10kΩ
R23, R24

Rp2040-logic analyzer design files

The KiCad project lives in the ramtuc/rp2040-logic-analyzer repository on GitHub; these links point at the commit this page was built from.

Rp2040-logic analyzer: common questions

What microcontroller does the Rp2040-logic analyzer use?

The Rp2040-logic analyzer is built around the RP2040, from the RP2040/RP2350 family.

How big is the Rp2040-logic analyzer PCB?

The Rp2040-logic analyzer measures 65 × 45 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Rp2040-logic analyzer?

73 components, from 22 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Rp2040-logic analyzer design files?

From the ramtuc/rp2040-logic-analyzer repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Rp2040-logic analyzer design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which ramtuc chose for the repository.

Can I test firmware for the Rp2040-logic analyzer without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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