SIM521 7″ HMI
The SIM521 features a premium, high resolution 7″ 800×480 color LCD powered by the STM32H750XB MCU with 480MHz Arm Cortex-M7 MCU and 1MB integrated RAM. Utilizing our proprietary SHIPEngine firmware, the SIM521 delivers a large array of options for front panel applications with industrial, commercial, and medical applications in a small package.
Featuring built-in RS485/UART and high-speed USB connectivity, SIMx21 family members are easily integrated into existing system designs. The 30-pin expansion connector provides further expandability to custom daughter-cards or off-the-shelf Serious Communications/Control Modules for extensive connectivity (including WiFi, Bluetooth, Ethernet, RSxxx, CAN, and more) as well as powerful system control.

FEATURES & VARIANTS
Processor and Memory
- STM32H750XB MCU with 480MHz Arm Cortex-M7 MCU and 1MB integrated RAM 32MB SDRAM with 128MB QSPI NAND Flash storage for program, non-volatile data, and files system storage
- μSDCard socket for (user supplied) memory cards for file system expansion and firmware/GUI updates
Integrated graphics/touch and audio I/O:
- Integrated LCD with optional touch controller and ambient light sensor for high brightness LCD options
- Integrated audio 3W speaker codec/amplifier outputs and external codec/amplifier support
Numerous communications ports
- USB 2.0 high speed 480mbps host port A connector
- USB 2.0 high speed 480mbps device port Micro B connector
- RS422/485 port with selectable duplex and termination
- 3.3V UART with transmit control (separate from RS485 port)
Simple in-chassis connectivity
- Direct Dock to Generation 5 Serious Comms/Control Modules (SCMs, e.g. SCM318)
- 16-pin JST ZPD series wire-to-board connector (RS485/UART, Power, RESET#)
- 6-pin industrial 3.5mm pluggable connector (RS485, Power)
Wide Operating Range
- 10.8-35VDC wide range power supply input
- -40 to +85C operating temperature range components (further limited by LCD option)
VARIANTS
FEATURE/VARIANT | A01 | A90 | A91 | A92 | A98 | A99 |
LCD | ||||||
Size (inches) | 4.3 (SIM221), 5″ (SIM721), 7″ (SIM521) | |||||
Touch Options | Resistive, capacitive, and non-touch | |||||
Operating Range | ||||||
Vin | 4,5 to 5,25 | 6 to 35 | 4,5 to 5,25 | |||
Operating Temp | Minus 40 to +85C | |||||
MCU & Storage | ||||||
Family | STM32H750XB MCU | |||||
Core | 480MHz Arm Cortex-M7 MCU | |||||
QSPI NAND Flash (MB) | 128 | – | 128 | 128 | 128 | 128 |
RAM Type | SDRAM | |||||
RAM Size (MB) | 32 | 16 | 32 | 32 | 16 | 32 |
Peripherals | ||||||
Battery Backed RTCC | Y | Y | Y | Y | – | Y |
Audio Output | Piezo Sounder | EM Sounder | Piezo Sounder | I2S | ||
Connectivity | ||||||
Host Port/Speed (Mbps) | 480 | 480 | 480 | 480 | 480 | 480 |
USB Host A Connector | Y | Y | Y | Y | N | N |
USB Device µB Connector | Y | Y | Y | Y | Y | Y |
UART | 1 | 1 | 1 | 1 | 1 | 1 |
RS422/485 Transceiver | 1 | 1 | 1 | 1 | 0 | 0 |