---
title: "NORVI X CPU-ESPS3-X1 DATASHEET"
description: "NORVI X is a next-generation modular industrial controller designed to power smart automation and IoT solutions. With a powerful CPU module and plug-and-play expansion modules, it scales up to 200 inputs and outputs – delivering unmatched flexibility, connectivity, and reliability.…"
url: "https://norvi.io/docs/norvi-x-cpu-esps3-x1-datasheet/"
updated: "2026-10-13"
category: "NORVI X / NORVI CPU-ESPS3-X1"
---

# NORVI X CPU-ESPS3-X1 DATASHEET

NORVI X is a next-generation modular industrial controller designed to power smart automation and IoT solutions. With a powerful CPU module and plug-and-play expansion modules, it scales up to 200 inputs and outputs – delivering unmatched flexibility, connectivity, and reliability.

## Product Features

- Based on ESP32-S3-WROOM
- TFT SPI Display with touch input
- Built-in RS-485 Communication
- Built-in Ethernet Communication
- DS3231 RTC
- DIN-Rail mount

### Expansions Supported

| **Digital Input Modules** 4 x Digital Inputs 8 x Digital Inputs 16 x Digital Inputs | **Relay Output Modules** 4 x Relay Output 8 x Relay Output | **Transistor Output Modules** 4 x Transistor Output 8 x Transistor Output 16 x Transistor Output |
| --- | --- | --- |
| **Analog Input Modules** 4 x Analog Inputs 0-10V 4 x Analog Inputs 4-20mA | **Analog Output Modules** 4 x Analog Outputs 0-10V / 4-20mA | **Communication Modules** Cellular Modem Quectel EC25 Cellular Modem SIMCOM A7672 |
| **Power & Utility Modules** 3 x Current Transformer (Energy) |  |  |

![NORVI CPU-ESPS3-X1 Front Face V2](https://norvi.io/wp-content/uploads/2025/11/NORVI-CPU-ESPS3-X1-Front-Face-V2-1024x717.jpg)

### Product Block Diagram

![NORVI CPU-ESPS3-X1 Summary Image - V2](https://norvi.io/wp-content/uploads/2025/11/NORVI-CPU-ESPS3-X1-Summary-Image-V2-1024x888.jpg)

### Main

| Range of Product | NORVI X |
| --- | --- |
| Product type | Modular Programmable Controller |
| Certifications | EN 61131-2:2007 EN 61010-1:2010+A1:2019 EN IEC 61010-2-201:2018 2014/30/EU- Electromagnetic Compatibility (EMC) Annex III, Part B, Module C |
| Rated supply voltage | 24V DC |
| Communication | WiFI 2.5GHz / Bluetooth Ethernet RS-485 |
| Displays and Visual Indicators | 2.0 inch TFT LCD Display 240*320 |

### Complementary

| Product Unified Code | NORVI CPU-ESPS3-X1 |
| --- | --- |
| Product Part Numbers | NORVI CPU-ESPS3-X1 |

### Mechanical Properties

| Enclosure | NORVI X |
| --- | --- |
| Mounting / Installation Method | DIN RAIL |
| Terminal Type | Push-in terminal |
| Terminal Arrangement | Bottom |
| Length | 81.00 mm |
| Height | 104.00 mm |
| Width | 37.50 mm |

![](https://norvi.io/wp-content/uploads/2025/11/norvi-x-cpu-sizes.png)

![CPU Front face naming](https://norvi.io/wp-content/uploads/2025/11/CPU-Front-face-naming-1024x782.jpg)

### Environment

| IP degree of protection | IP20 |
| --- | --- |
| Operating altitude | 0 - 2000 meters |
| Operating Temperature | −40 to +85 °C (−40 to +185 °F) |
| Storage altitude | 0 - 3000 meters |
| Shock resistance | 15 gn for 11ms |
| Resistance to electrostatic discharge | 4kV on contact 8kV on air |
| Resistance to electromagnetic fields | 10 V/m (80 MHz …… 1GHz) 3 V/m (1.4 MHz …… 2 GHz) 1 V/m (2 MHz …… 3 GHz) |

### Electrical Characteristics

| Rated Supply Voltage (V) | 24V DC |
| --- | --- |
| Current Consumption (mA) | 40mA |
| Maximum Voltage(V) Input | 9V DC |
| Minimum Voltage(V) Input | 28V DC |
| Recommended Power Source | 1A 24V DC |

## Grid Powered Devices

### Processing

| SOC / MCU | ESP32-S3-WROOM-1U-N16R2 |
| --- | --- |
| Flash Memory | 16MB |
| ROM | 384 KB |
| SRAM | 512 KB |
| PSRAM | 2 MB (Quad-SPI) |

## Peripherals

### Micro SD Card Support

| Card Type | MicroSD |
| --- | --- |
| Interface | SPI |
| SD CARD CS | IO42 |
| MISO | IO13 |
| MOSI | IO11 |
| SCLK | IO12 |
| SD Detect | NOT CONNECTED |

### Built-in Buttons

| Button 1 Pin | P0 | PCA9636 - IO Expander - I2C Address -0x41 |
| --- | --- | --- |
| Button 2 Pin | P3 | PCA9636 - IO Expander - I2C Address -0x41 |

### Built-in Indicators

| RUN Indicator | P2 | PCA9636 - IO Expander - I2C Address -0x41 |
| --- | --- | --- |
| ERROR Indicator | P1 | PCA9636 - IO Expander - I2C Address -0x41 |

### LCD TFT

| Display Driver | ST7789 |
| --- | --- |
| Display Size | 2.0 inch |
| MOSI | IO11 |
| MISO | IO13 |
| SCLK | IO12 |
| DIS_CS | IO45 |
| TP RST/ DIS_RST | IO47 |
| DIS_DC | IO46 |
| SCL Pin (Touch Screen) | IO9 |
| SDA Pin (Touch Screen) | IO8 |
| RESET Pin | NOT CONNECTED |

## INPUTS and OUTPUTS

An expansion module from NORVI Controllers should be used to add I/O to the CPU Module.
Refer products section Link for information on Expansion Modules.
Currently Available Expansion Modules are

| 4 x Digital Inputs |
| --- |
| 4 x Relay Outputs |
| 4 x Transistor Outputs |
| 4 x Analog Inputs 0-10V |
| 4 x Analog Inputs 4-20mA |
| 4 x Analog Outputs 0-10V / 4-20mA |
| 8 x Digital Inputs |
| 16 x Digital Inputs |
| 8 x Relay Outputs |
| 16 x Transistor Outputs |
| 4 x Thermocouple |
| 8 x Transistor Outputs |
| UART - IO |
| 4 x RTD |

## Communication Channels

### RS-485 Communication

| Communication Mode | HALF-DUPLEX |
| --- | --- |
| Transceiver | SN65HVD72 |
| Unit Load | 1/4 |
| Flow Control / Direction Control Pin | Automatically Controlled |
| TX Pin | IO15 |
| RX Pin | IO16 |
| Terminal Arrangement | ![NORVI CPU-ESPS3-X1 RS485 Terminal Arrangement](https://norvi.io/wp-content/uploads/2025/11/NORVI-CPU-ESPS3-X1-RS485-Terminal-Arrangement.png) |

## GPIO Map

| GPIO | CPU (Utilization) | Expansion Port (Utilization) |
| --- | --- | --- |
| 0 | BOOT Button | NC |
| 1 | SCSN - Ethernet | IO1 |
| 2 | RSTN - Ethernet | IO2 |
| 4 | INTN - Ethernet | IO4 |
| 5 |  | IO5 |
| 6 |  | IO6 |
| 7 |  | IO7 |
| 8 | SDA | SDA |
| 9 | SCL | SCL |
| 10 |  | IO10 |
| 11 | MOSI | MOSI |
| 12 | SCLK | SCLK |
| 13 | MISO | MISO |
| 14 |  | IO14 |
| 15 | RS485 - TX | IO15 |
| 16 | RS485 - RX | IO16 |
| 17 | MODEM - TX1 | TX1 |
| 18 | MODEM - RX1 | RX1 |
| 19 | USB - DP | D_N |
| 20 | USB - DN | D_P |
| 21 |  | IO21 |
| 35 |  | IO11 |
| 36 |  | IO36 |
| 37 |  | IO13 |
| 38 | PCA9536 - RESET | RST_PCA |
| 39 |  | IO39 |
| 40 |  | IO40 |
| 41 |  | IO12 |
| 42 | SD CARD - CS | NC |
| 45 | CS - TFT DISPLAY | NC |
| 46 | DC - TFT DISPLAY | NC |
| 47 | RESET - TFT DISPLAY | NC |
| 48 | INTERRUPT - TOUCH PANEL | NC |

**Note: For the N16R8 version, these GPIOs are not available. They are supported only on the standard version. **

## Expansion Port

| PIN INDEX | Purpose | GPIO | SOURCE |
| --- | --- | --- | --- |
| 1 | MOSI | IO11 | ESP32-S3 |
| 2 | MISO | IO13 |  |
| 3 | SCLK | IO12 |  |
| 4 | GND | ---- |  |
| 5 | SCL | IO9 |  |
| 6 | SDA | IO8 |  |
| 7 | GND | ---- |  |
| 8 | RX1 | IO18 |  |
| 9 | TX1 | IO17 |  |
| 10 | GND | ---- |  |
| 11 | D+ | ---- |  |
| 12 | D- | ---- |  |
| 13 | GND | ---- |  |
| 14 | CS1 | P1_0 | PCA9539 I2C Address 0x75 |
| 15 | CS2 | P0_7 |  |
| 16 | CS3 | P0_6 |  |
| 17 | CS4 | P0_5 |  |
| 18 | IO1 | IO1 | ESP32-S3 |
| 19 | IO2 | IO2 |  |
| 20 | IO4 | IO4 |  |
| 21 | IO5 | IO5 |  |
| 22 | IO6 | IO6 |  |
| 23 | IO7 | IO7 |  |
| 24 | IO10 | IO10 |  |
| 25 | IO11 | IO35 |  |
| 26 | IO12 | IO41 |  |
| 27 | IO13 | IO37 |  |
| 28 | IO14 | IO14 |  |
| 29 | RS485_TX | IO15 |  |
| 30 | GND | ---- |  |
| 31 | GND | ---- |  |
| 32 | RS485_RX | IO16 |  |
| 33 | P1_1 | P1_1 | PCA9539 I2C Address 0x75 |
| 34 | P1_2 | P1_2 |  |
| 35 | IO21 | IO21 | ESP32-S3 |
| 36 | GND | ---- |  |
| 37 | GND | ---- |  |
| 38 | P1_3 | P1_3 | PCA9539 I2C Address 0x75 |
| 39 | P1_4 | P1_4 |  |
| 40 | P1_5 | P1_5 |  |
| 41 | IO39 | IO39 | ESP32-S3 |
| 42 | IO40 | IO40 |  |
| 43 | NC | ---- |  |
| 44 | NC | ---- |  |
| 45 | NC | ---- |  |
| 46 | GND | ---- |  |
| 47 | 5V | 5V | Power |
| 48 | GND | GND |  |
| 49 | 24V | 24V |  |
| 50 | 24V | 24V |  |

| Product Type | MCU / PSRAM | Expansion Compatibility | Notes |
| --- | --- | --- | --- |
| Standard Product | ESP32-S3 (N16R2) – PSRAM via QSPI | All expansion modules supported | - |
| Customized Product | ESP32-S3 (N16R8) – PSRAM via OPI | All except X-Q4 expansion | X-Q4 not supported on this variant |