SLogic32U3 Introduction

2026-10-06

Update history

Date	Version	Author	Update content
2026-10-06	v0.3	Sipeed	Split out a standalone Quick Start page; the intro keeps only product and specs Updated the host-software list and ecosystem notes to match the SLogic 2.0.0 release Corrected the digital bandwidth, probe cable and ADC module descriptions
2026-09-30	v0.1	Sipeed	Initialize doc

Introduction

Overview

The SLogic32U3 is the flagship logic analyzer of the Sipeed SLogic series, and the world's first logic analyzer with a USB3.2 Gen2 interface. In a 59×51×13 mm CNC aluminum enclosure it delivers 32-channel high-speed Stream capture: 1400M@4CH, 800M@8CH, 400M@16CH, 200M@32CH, with a digital signal bandwidth up to 350 MHz.

Backed by the USB3.2 Gen2 interface and an onboard 2 Gbit DDR3 elastic buffer, it sustains 800 MB/s (6.4 Gbps) in practice, streaming waveforms straight into your PC's memory or even disk, no longer bound by device-side buffer depth. Digital inputs accept a 0–10 V range with a 0–6 V adjustable threshold, and an optional 4-channel ADC module gives the same device sampling-oscilloscope capability.

On the host side, Sipeed officially provides SLogicView, ngscopeclient and sigrok-cli, plus the install-free web app SLogicWeb (slogic.sipeed.com) — you can capture right in a browser, even on an Android phone.

SLogic32U3 product

🎉 The SLogic32U3 is crowdfunding now! Back us on Kickstarter.

New to the device? Start with the Quick Start.

Features and Specifications

Key features

USB3.2 Gen2 high-speed interface: The world's first USB3.2 Gen2 logic analyzer. Interface line rate 10 Gbps, and with the onboard 2 Gbit DDR3 elastic buffer it sustains 800 MB/s (6.4 Gbps) in practice, keeping high sample rates even at high channel counts.
32 channels / up to 1400 MSa/s: 1400M@4CH, 800M@8CH, 400M@16CH, 200M@32CH, covering everything from single-bus debugging to multi-lane parallel bus analysis.
350 MHz digital signal bandwidth: Enough for SD UHS-I, eMMC HS200, Octal-SPI and other high-speed buses.
Adjustable threshold + wide input range: 0–10 V digital input, 0–6 V adjustable logic threshold (0.1 V steps), matching 1.2V / 1.8V / 2.5V / 3.3V / 5V and other logic levels.
Mini-HDMI coaxial shielded probes: The 32 channels are split into 4 groups of 8, each group merged into one Mini-HDMI connector; the 15 cm coaxial shielded cable markedly improves high-speed signal integrity over plain jumper wires.
Optional ADC → oscilloscope: An optional 4-channel ADC module (8-bit, 100 MSa/s, 10 MHz analog bandwidth, ±15 V safe input) turns the same device into a sampling oscilloscope for mixed-signal observation.
Multiple host apps + install-free web app: Choose SLogicView (default), ngscopeclient or sigrok-cli as needed; the web app SLogicWeb needs no install and runs on Android too.
Easy OTA: Firmware can be updated online.

Technical specifications

Item	Specification
Digital channels	32
Max sample rate	1400 MSa/s (4CH)
Rate–channel tiers	1400M@4CH · 800M@8CH · 400M@16CH · 200M@32CH
Digital signal bandwidth	350 MHz
USB interface	USB3.2 Gen2 x1 / Gen1 x1 / 2.0 HS (10 Gbps line rate)
Actual stream rate	800 MB/s (6.4 Gbps)
Stream FIFO buffer	2 Gbit DDR3
Capture mode	Stream (real-time readback); depth limited by PC memory/disk
Input voltage range	0 – 10 V
Adjustable threshold (Vth)	0 – 6 V, 0.1 V steps (below Vth = 0, above = 1)
Input impedance	100 kΩ (digital input)
Trigger	Multi-channel / multi-edge combinations (SLogicView, sigrok-cli)
Optional ADC module	4 channels, 8-bit, 100 MSa/s, 10 MHz analog bandwidth, ±15 V safe input
Connectors	4 × Mini-HDMI (HDMI Type-C 1.4, 8 channels each, coaxial shielded) + USB-C
Probe cable	15 cm coaxial shielded cable + PTFE jumper wire
Power	USB powered, rated 5 V @ 65 mA
Enclosure / size	CNC aluminum, 59 × 51 × 13 mm
Compatible software	SLogicView, ngscopeclient, sigrok-cli, web app SLogicWeb; plus the community app ALL LOGIC
Supported OS	Windows 10/11 x64, Linux x86_64, macOS (Apple Silicon), Android (browser)
Easy OTA	Yes

Ecosystem at a glance

The host apps ship together in the SLogic release package:

Host app	Position	Best for
SLogicView	Sipeed's own, maintained GUI, the default	Most people
ngscopeclient	GPU-accelerated, Filter Graph, mixed signal	Advanced analysis; ADC oscilloscope mode
sigrok-cli	Command line	Automation / CI / headless capture / AI Agent
SLogicWeb (web)	Runs in a browser, no install	Quick debugging, Android phones, no software
ALL LOGIC	A fine community app, built on DSView	Users familiar with DSView / DSLogic

See the Software Guide for detailed usage and how to choose.

SLogic series comparison

Attribute	SLogic Combo8	SLogic16U3	SLogic32U3
USB version	USB2.0 HS	USB3.2 Gen1 x1	USB3.2 Gen2 x1
Digital channels	8	16	32
Max sample rate	80M	800M	1400M
Typical (stream)	80M@4CH, 40M@8CH	800M@4CH, 400M@8CH, 200M@16CH	1400M@4CH, 800M@8CH, 400M@16CH, 200M@32CH
Actual stream rate	320 Mbps	4 Gbps	6.4 Gbps (800 MB/s)
Stream FIFO buffer	48 Kibit SRAM	128 Kibit BSRAM	2 Gbit DDR3
Digital bandwidth	40 MHz	200 MHz	350 MHz
Probe cable	Jumper wire	Coaxial + jumper	15 cm coaxial + PTFE jumper
sigrok compatible	Y	Y	Y
Adjustable threshold	N	Y	Y
Easy OTA	N	N	Y
Enclosure	Plastic	Aluminum	Aluminum
Extras	DAP-Link, CK-Link, 4× UART	—	Expandable ADC → oscilloscope
Size	20x40x10mm	40x40x10mm	59x51x13mm