SL-IoT-BOX-6ULL Datasheet and Pinout
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SL-IoT-BOX-6ULL Datasheet and Pinout
General description
The SL-IoT-BOX-6ULL is a industrial fanless computer. It is compact, energy-efficient computer dedicated for edge and PLC applications.
Powered by the NXP i.MX6ULL processor, it offers versatile connectivity with RS232, RS485, CAN-FD, USB, Ethernet, and optional WiFi/BLE with external antenna. It provides digital and relay I/O, expandable storage via eMMC or MicroSD, as well as development-friendly features like LED indicators, a console port, and RTC with battery backup.
Designed for reliability and flexibility, the SL-IoT-BOX-6ULL industrial fanless computer is an ideal platform for modern IoT and industrial solutions. By integrating OpenPLC software, industrial applications become more scalable, future-ready, and performance-driven.
At the core of the system, the powerful VisionSOM-6ULL module drives the performance of the computer.
The SL-IoT-BOX industrial fanless edge computer comes in a durable aluminum enclosure, rated IP40 for reliable protection.
Applications
- IoT Sensor Hubs
- Home Appliances
- IoT gateways
- Protocol converters
- Home Automation – Smart Home
- 2D barcode scanners and printers
- Smart grid infrastructure
- Outdoor equipment
Features
- Powered by industrial NXP i.MX 6ULL application processor
- Fanless design
- Core clock up to 900MHz
- Up to 1GB RAM DDR3L
- Up to 32GB eMMC
- Integrated Ethernet 10/100 Mb/s
- Integrated industrial 1xRS485, 1xCAN-FD, 2xRS232 and 4xUSB2.0
- Dual relay NC-C-NO outputs
- Digital inputs 4xIEC 61131-2
- Digital high-side outputs
- Integrated RTC with battery
- Integrated MicroSD card reader
- Optional Murata 802.11b/g/n Wi-Fi and Bluetooth v5.1 module
- Power-efficient and cost-optimized solution
- Integrated security features
- Alu case with IP40 protection
Pictures of SL-IoT-BOX-6ULL versions
| Version | Photo |
|---|---|
| With case |
|
| Exploded view |
 |
Ordering info
SL_CpuType_RamSize_FlashSize_SF_TEMP
| SL | Product type SL-IOT-BOX - Industrial Single Board Computer |
| CpuType | CPU Type 6ULL - i.MX6 ULL Y2 |
| RamSize | DDR3 RAM Size 512R - 512MB |
| FlashSize | Flash Size Type and Density 08GE - 8GB eMMC |
| SF | Special Features 0SF - No Special Features 1WB - Built-in Murata 802.11b/g/n Wi-Fi/Bluetooth v5.1 |
| TEMP | Operating Temperature E - Extended: -25 to +70 C I - Industrial: -40 to +85 C |
Operating ranges
| Parameter | Value | Unit | Comment |
|---|---|---|---|
| Power Supply | - | ||
| Power Supply (USB)1 | Connected to USB console connectors | ||
| DI input H voltage (above) | In accordance with the standard IEC61131-2 | ||
| DI input L voltage (below) | In accordance with the standard IEC61131-2 | ||
| DO output current limit | Recommended max. output current up to 150 mA | ||
| Environment temperature2 | oC | Industrial range w/o WiFi module | |
| Industrial (extended) range with WiFi module |
Note:
1. Recommended only for services purposes
2. Maximum MPU junction temperature is +105oC (industrial version).
Electrical parameters
| SBC signal name |
Parameter | Value | Units | ||
|---|---|---|---|---|---|
| Min. | Typ. | Max. | |||
| +5V | SBC supply voltage1 | 4.85 | 5 | 5.15 | V |
| +3.3VO | Supply voltage for external peripherals | 3.2 | 3.3 | 3.35 | V |
| VGPIO | GPIO Input Voltage | 0 | 3.3 | 3.62 | V |
| I+5V | Total Supply Current | TBD | TBD | TBD | mA |
| I+3.3VO | Output current of 3.3V power supply for peripherals |
- | - | 0.1 | A |
| VBATT | RTC/SNVS Backup Battery Supply |
2.66 | - | 3.6 | V |
Notes:
1. The external voltage connected to pin 2 of J100 and/or J101 or MicroUSB.
Front connectors
| Connector name | Default function | Note | ||
|---|---|---|---|---|
| Power Group | ||||
| M | Power reference ground | - | ||
| L+ | External power supply | Recommended voltage 24 VDC | ||
| Group "Output Relays" (REL1, REL2) | ||||
| REL1 NC | REL1 normal connect contact | max. resistance load 6A/250VAC or 6A/30 VDC (relay family HF41F) | ||
| REL1 C | REL1 normal common contact | max. resistance load 6A/250VAC or 6A/30 VDC (relay family HF41F) | ||
| REL1 NO | REL1 normal open contact | max. resistance load 6A/250VAC or 6A/30 VDC (relay family HF41F) | ||
| REL2 NC | REL2 normal connect contact | max. resistance load 6A/250VAC or 6A/30 VDC (relay family HF41F) | ||
| REL2 C | REL2 normal common contact | max. resistance load 6A/250VAC or 6A/30 VDC (relay family HF41F) | ||
| REL2 NO | REL2 normal open contact | max. resistance load 6A/250VAC or 6A/30 VDC (relay family HF41F) | ||
| Group "Digital Outputs" (DQ)1 | ||||
| L+ | External power supply for digital outputs | We recommended connecting to L+ in Power Group | ||
| DQ1 | High-side output | max. recommended output current 100 mA | ||
| DQ2 | High-side output | max. recommended output current 100 mA | ||
| DQ3 | High-side output | max. recommended output current 100 mA | ||
| DQ4 | High-side output | max. recommended output current 100 mA | ||
| M | Power reference ground | Connected with M line in Power Group | ||
| Group "Digital Inputs" (DI) | ||||
| L+ | External power supply for digital inputs | We recommended connecting to L+ in Power Group | ||
| DI1 | Digital inputs | Compatible with IEC 61131-2 type 1 | ||
| DI2 | Digital inputs | Compatible with IEC 61131-2 type 1 | ||
| DI3 | Digital inputs | Compatible with IEC 61131-2 type 1 | ||
| DI4 | Digital inputs | Compatible with IEC 61131-2 type 1 | ||
| M | Power reference ground | Connected with M line in Power Group | ||
| Group "RS485/CAN Serial Interfaces" | ||||
| A1 RS4853 | A signal of half-duplex RS485 interface | Fail safe input | ||
| B1 RS4853 | B signal of half-duplex RS485 interface | Fail safe input | ||
| M | Power reference ground | Connected with M line in Power Group | ||
| L CAN3 | L signal of CAN-FD interface | - | ||
| H CAN3 | H signal of CAN-FD interface | - | ||
| M | Power reference ground | Connected with M line in Power Group | ||
| Group "Dual RS232 Serial Interfaces" | ||||
| T1 RS232 | Tx line of RS232-14 | - | ||
| R1 RS232 | Rx line of RS232-14 | - | ||
| M | Power reference ground | Connected with M line in Power Group | ||
| T2 RS232 | Tx line of RS232-25 | - | ||
| R2 RS232 | Rx line of RS232-25 | - | ||
| M | Power reference ground | Connected with M line in Power Group
| ||
Note:
1. Each DQ is equipped with high-side electronic switch
2. RS485 is implemented on hardware UART5 of i.MX6ULL
3. CAN interface is implemented on hardware CAN1 of i.MX6ULL
4. RS232-1 is implemented on hardware UART4 of i.MX6ULL
5. RS232-2 is implemented on hardware UART8 of i.MX6ULL
Back connectors
| Connector pin number | Default function | GPIO | Ball number BGA289 | Notes |
|---|---|---|---|---|
| J100 | ||||
| 1 | +3,3VO | +3,3V power output (max. 100 mA) - paralelly connected to pin 1 of J101 | ||
| 2 | +5V | External power supply (power source) 5V - paralelly connected to pin 2 of J101 | ||
| 3 | UART8-RXD | ENET2_TX_EN | B15 | |
| 4 | GND | |||
| 5 | UART8-TXD | ENET2_TX_DATA1 | A16 | |
| 6 | UART3-TXD | UART3_TX_DATA | H17 | |
| 7 | PWM5 | LED_DATA18 | A13 | |
| 8 | UART3-RXD | UART3_RX_DATA | H16 | |
| 9 | GND | |||
| 10 | UART3-CTS | UART3_CTS | H15 | |
| 11 | UART4-RXD | LCD_ENABLE | B8 | |
| 12 | UART3-RTS | UART3_RTS | G14 | |
| 13 | UART4-TXD | LCD_CLK | A8 | |
| 14 | GND | |||
| 15 | I2C4-SDA | LCD_DATA02 | E10 | In I2C mode external pull-up resistor is necessary (no any internal pull-up) |
| 16 | I2C3-SDA | LCD_DATA00 | B9 | In I2C mode external pull-up resistor is necessary (no any internal pull-up) |
| 17 | I2C4-SCL | LCD_DATA03 | D10 | In I2C mode external pull-up resistor is necessary (no any internal pull-up) |
| 18 | I2C3-SCL | LCD_DATA01 | A9 | In I2C mode external pull-up resistor is necessary (no any internal pull-up) |
| 19 | ECSPI2-MOSI | UART5_TX_DATA | F17 | |
| 20 | UART7-RXD | LCD_DATA16 | C13 | |
| 21 | ECSPI2-MISO | UART5_RX_DATA | G13 | |
| 22 | UART7-TXD | LCD_DATA17 | B13 | |
| 23 | ECSPI2-SCLK | UART4_TX_DATA | G17 | |
| 24 | UART7-CTS | LCD_DATA07 | D11 | |
| 25 | ECSPI2-CS | UART4_RX_DATA | G16 | |
| 26 | UART7-RTS | LCD_DATA06 | A10 | |
| J101 | ||||
| 1 | +3,3VO | +3,3V power output (max. 100 mA) - paralelly connected to pin 1 of J100 | ||
| 2 | +5V | External power supply (power source) 5V - paralelly connected to pin 2 of J100 | ||
| 3 | USB1-DP | Line connected to USB1 channel through MUX (output ENET2_RX_ER, ball D16 is USB1 connection selector). Connected to USB1-DP MPU line if ENET2_RX_ER="0" (USB1-SEL), in another case USB1-DP MPU line is connected to MicroUSB connector (USB-OTG). | ||
| 4 | GND | |||
| 5 | USB1-DM | Line connected to USB1 channel through MUX (output ENET2_RX_ER, ball D16 is USB1 connection selector). Connected to USB1-DM MPU line if ENET2_RX_ER="0" (USB1-SEL), in another case USB1-DM MPU line is connected to MicroUSB connector (USB-OTG). | ||
| 6 | GPIO-6 | GPIO1_IO06 | K17 | |
| 7 | GPIO3.17 | LCD_DATA12 | C12 | |
| 8 | GPIO-7 | GPIO1_IO07 | L16 | |
| 9 | GND | |||
| 10 | GPIO-8 | GPIO1_IO08 | N17 | |
| 11 | CAN1-TX | LCD_DATA08 | B11 | |
| 12 | GPIO-9 | GPIO1_IO09 | M15 | |
| 13 | CAN1-RX | LCD_DATA09 | A11 | |
| 14 | GND | |||
| 15 | CAN2-TX | LCD_DATA10 | E12 | |
| 16 | GPIO3.2 | LCD_HSYNC | D9 | |
| 17 | CAN2-RX | LCD_DATA11 | D12 | |
| 18 | GPIO3.3 | LCD_VSYNC | C9 | |
| 19 | MQS-R | LCD_DATA22 | A14 | |
| 20 | UART2-RXD | UART2_RX_DATA | J16 | |
| 21 | MQS-L | LCD_DATA23 | B16 | |
| 22 | UART2-TXD | UART2_TX_DATA | J17 | |
| 23 | GPIO3.25 | LCD_DATA20 | C14 | |
| 24 | UART2-CTS | UART2_CTS | J15 | |
| 25 | GPIO3.26 | LCD_DATA21 | B14 | |
| 26 | UART2-RTS | UART2_RTS | H14 | |
| J102 | ||||
| 1 | UART1-TXD | UART1_TX_DATA | K14 | TxD line of Linux console port (LV-TTL logic levels) |
| 2 | UART1-RXD | UART1_RX_DATA | K16 | RxD line of Linux console port (LV-TTL logic levels) |
| 3 | GND | |||
| Another functions | ||||
| BUZZER | GPIO1_IO05 | M17 | Electromagnetic speaker control output (thru NPN driver) | |
| SYSLED | ENET2_TX_CLK | D17 | System or user LED control output (heartbeat by default, thru NPN driver) | |
| USRLED | LCD_DATA14 | A12 | User LED control output (thru NPN driver) | |
| WDOG-B | LCD_RESET | E9 | Used by system, do not modify default configuration | |
| ENET-MDIO | ENET2_RX_DATA0 | C17 | ||
| ENET-MDC | ENET2_RX_DATA1 | C16 | ||
| ENET1-RST | ENET2_RX_EN | B17 | ||
| ENET1-INT | ENET2_TX_DATA0 | A15 | ||
| USB1-SEL | ENET2_RX_ER | D16 | ||
| USB1-ID | GPIO1_IO00 | K13 | ||
| USB1-VBUS-OC | GPIO1_IO01 | L15 | ||
| USB1-VBUS-EN | GPIO1_IO04 | M16 | ||
| USB2-VBUS-OC | GPIO1_IO03 | L17 | ||
| USB2-VBUS-EN | GPIO1_IO02 | L14 | ||
| WiFi and BLE module connection | ||||
| BT-ENABLE | CSI_MCLK | F5 | ||
| WLAN-HWAKE | CSI_PIXCLK | E5 | ||
| BT-HWAKE | CSI_VSYNC | F2 | ||
| BT-WAKE | CSI_HSYNC | F3 | ||
| BT-RXD | CSI_DATA00 | E4 | UART5 | |
| BT-TXD | CSI_DATA01 | E3 | UART5 | |
| BT-RTS | CSI_DATA02 | E2 | UART5 | |
| BT-RTS | CSI_DATA03 | E1 | UART5 | |
| BT-PCM-SYNC | CSI_DATA04 | D4 | ||
| BT-PCM-CLK | CSI_DATA05 | D3 | ||
| BT-PCM-OUT | CSI_DATA06 | D2 | ||
| BT-PCM-IN | CSI_DATA07 | D1 | ||
| CLK32kHz | JTAG_CTK | M14 | Clock output to 1DX radio module (WiFi/BLE) | |
| JTAG_MOD | JTAG_MOD | P15 | Permanently connected to GND | |
| BOOT_MODE1 | BOOT_MODE1 | U10 | Permanently connected to GND | |
Note:
1. WiFi radio module is connected to SDIO1 interface.
2. Power supply (5V) for SBC can be connected to pin 2 of J100 or 101 or MicroUSB connector.
Software loading - BOOT0 jumper
If BOOT0 jumper is open - MPU starts normally (software from MMC memory is loading).
If pins of BOOT0 jumper are connected to each other, bootloader starts (active on USB1).
RTC battery connection
Dimensions
