DART-MX91 :
NXP i.MX91

Starting from $35

Small-size i.MX 91 System on Module/Computer on Module – a versatile, cost-sensitive solution.

The DART-MX91 features an energy-efficient architecture, robust security, industrial-grade temperature support, and a wide range of high-speed connectivity options—all within Variscite’s compact 55x30mm DART SoM footprint. Powered by the 1.4GHz Cortex™-A55 NXP i.MX 91 processor, the DART-MX91 is equipped with dual CAN-FD, dual GbE, dual USB, certified Wi-Fi6 802.11 ax/ac/a/b/g/n, with BT/BLE 5.4 and optional 802.15.4.

The DART-MX91 is compatible with Variscite’s DART Pin2Pin family, ensuring seamless scalability and an easy migration path to meet diverse performance and feature requirements—from entry-level platforms to high-performance solutions.
For the complete Pin2Pin product list, check out Variscite’s Pin2Pin System on Module product families.

* The Pin2Pin compatibility depends on pinmux options; please verify the detailed pinout table in the related SoM to confirm compatibility is maintained in your specific design.

** Variscite’s i.MX 91 System on Module (SoM) is in development at this stage. The information on this page is subject to change without notice. For additional information contact us.

Specifications

CPU	Up to 1.4GHz Single Cortex-A55 NXP i.MX91
High Speed Interfaces	2x USB2.0, 2x GbE
Dimensions	Only 55 x 30 mm
Certified WiFi/BT	Wi-Fi 6 802.11 ax/ac/a/b/g/n with optional 802.15.4 and BT/BLE 5.4
Temperature range	-40 to 85°C
Product Longevity	2039
Pin2pin Family	DART Pin2Pin family

CPU Name	NXP i.MX 91
CPU Type	Cortex™-A55
CPU Cores	1 core
CPU Clock (Max)	Up to 1.4GHz
Integer performance (DMIPS)	Up to 3,710

RAM	512MB – 2GB LPDDR4
eMMC	8 – 128 GB

Multimedia
Camera Interfaces	8bit Parallel

Display
Parallel RGB	1366x768p60 or 1280x800p60
Touch controller	Capacitive

Audio
Headphone driver	Yes
Microphone	Digital, Analog (stereo)
Digital audio serial interface	3 x I2S(SAI),S/PDIF,RX TX, PDM 4CH
Line In/Out	Yes

Connectivity
SD / MMC	x2
USB Host / Device	USB2.0: 2x OTG
UART	x8, up to 5 Mbps
I2C	x7
I3C	x2
SPI	x7
CAN Bus	x2
RTC	On carrier
JTAG	x1
ADC	x4

Networking
Ethernet	2x 10/100/1000 Mbps
Wi-Fi	Certified Wi-Fi 6 dual-band 802.11ax/ac/a/b/g/n with optional 802.15.4
Bluetooth	BT/BLE5.4

Linux	Yocto, Debian

Mechanical Specifications
Dimensions (W x L)	55 x 30mm

Electronic Specifications
Supply voltage	3.3V or 3.4-5V
Digital I/O voltage	3.3V/1.8V

Environmental Specifications
Commercial operating temperature	0 to 70°C
Extended operating temperature	-25 to 85°C
Industrial operating temperature	-40 to 85°C
Storage temperature	-40 to 85°C
Storage humidity	5% to 95%

DART-MX91S_[xxxx]C_[xxxx]R_[xx]G_[AC]_[EC]_[WBD/WBE]_[SDEX]_[X]T
MX91S:	Processor type: i.MX 9131 single core fully featured
[xxxx]C:	CPU clock speed: 1400MHz: 1400C
[xxxx]R:	LP-DDR4: 512 MB: 512R, 1536 MB: 1536R, 2048 MB: 2048R
[xx]G:	eMMC: 8 GB : 8G, 16 GB : 16G, 32 GB : 32G, 64 GB : 64G
[AC]:	Audio Codec
[EC]:	GbE PHY (second port always via RGMII)
[WBD/WBE]	WBD: Built-in certified single band Wi-Fi 802.11 ax/ac/a/b/g/n + BT/BLE 5.4 WBE: Built-in certified single band Wi-Fi 802.11 ax/ac/a/b/g/n + BT/BLE 5.4 + 802.15.4
[SDEX]	Default: no additional external SDIO SDEX: additional external SDIO (available only without WBD/WBE)
[x]T:	C : 0 to 70°C, E: -25 to 85°C, I : -40 to 85°C

Note: All options in [brackets] are optional add-ons that can be either removed or selected from a list of options

DART-MX91 Evaluation Kits

The DART-MX91 Development Kit and Starter Kit can serve as a complete development platform for both evaluation and application development purposes. The kits provide a great showcase of the DART-MX91 connectivity features and performance.