FRDM-IMX91S Hardware Introduction
The FRDM i.MX 91S Development Board is a cost-effective, compact platform built around the i.MX 91 applications processor, optimized for embedded Linux development. It integrates the NXP IW610 wireless module, enabling robust Wi-Fi 6 + Bluetooth LE 5.4 / 802.15.4 connectivity for Industrial and IoT applications. Designed for rapid prototyping, the board supports GoPoint for i.MX Applications Processors, providing a suite of pre-integrated demos and reference implementations.
The FRDM i.MX 91S features integrated 256MB NAND flash memory supporting direct boot (NAND boot). This includes a deeply trimmed, lightweight file system optimized for reliability and minimal resource consumption. Its small footprint maximizes usable storage while ensuring efficient operation. This file system serves as an ideal starting point – its modular design is fully customizable, allowing you to tailor it further to your specific application needs and optimize performance.
Get to know FRDM-IMX91S Development Boaard
Specifications
- i.MX 91 applications processor with 1x Arm® Cortex®-A55
- LPDDR4 16-bit 512MB
- QSPI NAND Flash, 256MB
- Power Management IC (PMIC)
- MicroSD 3.0 card slot
- One USB 2.0 Type-C connector
- One USB 2.0 Type-C for debug
- One USB 2.0 Type-A connector
- One USB Type-C PD only
- Onboard Wi-Fi® 6 + Bluetooth® LE 5.4/802.15.4 module
- One 2x5 Pin NXP custom interface with:
- One CAN port
- Two channels for ADC
- I2C/I3C expansion
- One 1 Gbps Ethernet (ETER)
- External RTC with coin cell connector
- 40 pin (2 x 20) expansion I/O
| Feature | FRDM-IMX91S |
| SoC Package | 11 x 11 |
| NVM | NAND flash 256 MB |
| DRAM | NANYA 512 MB |
| PMIC | PF9453 |
| WiFi Module | u-blox MAYA-W476 on-board |
| USB TYPE C | Type-C+Type-A |
| ENET | 1xGbe |
| Display (Parallel RGB LCD) | 2x20 EXPI |
| Camera (Parallel Camera) | 2x20 EXPI |
| 2x20 Expansion Interface | Y |
| CAN BUS | Y |
| MicroSD | Y |
| UART | Y |
| Audio | MQS |
| Power Connector | Type-C |
| PCB layers | 6 |
| Base Board DIM | 6.5 x 9.5 cm |
| NXP Devices On-board | |
| PMIC | PF9453 |
| Real time clock/calendar | PCF2131 |
| WIFI/BLE/802.15.4 Tri-Radio | IW610 in u-blox module |
| CAN Transceiver | TJA1051T/3 |
| IIC Extends GPIO | PCAL6524 |
