# MCU Bluetooth HCM511S

## Summary

- BLE 5.4 module
- LCC form factor
- 16.6 mm × 11.2 mm × 2.1 mm
- 0.57 g
- Operating temperature of -40 °C to +85 °C

## Key features

- BLE 5.4
- 32 KB RAM, 352 KB/512 KB flash (optional)
- Bluetooth mesh network low-power nodes (optional)
- Supports 1 USART, 1 SWD and 14 GPIO interfaces by default and also supports various interfaces including EUART, I2C, ADC and PDM in the case of multiplexing
- Operating temperature range: -40 °C to +85 °C
- PCB antenna

## Overview

HCM511S is a high-performance MCU Bluetooth module launched by Quectel. It boasts an ARM Cortex-M33 processor with a frequency of up to 76.8 MHz and supports BLE 5.4. The module features built-in 32 KB RAM and 352 KB/ 512 KB flash (optional), ensuring efficient performance.

HCM511S is in an LCC form factor with an ultra-compact size of 16.6 mm × 11.2 mm × 2.1 mm, which optimizes the size and cost for end-products and is compatible with diverse designs.

HCM511S supports Bluetooth mesh network low-power nodes, increasing network scalability and node counts with mesh topology, which is suitable for digital keys, asset tags and beacons, portable medical devices, low-power nodes for smart homes, battery-operated motion sensors, etc.

## Product Brochure

[Quectel_Product_Brochure_V8.6.pdf](https://www.quectel.com/content/uploads/2026/05/Quectel_Product_Brochure_V8.6.pdf) - Download

## Documentation and resources

### AT Commands Manual

- **File Name:** Quectel_HCM511S&HCM511S-E&HGMB11S_AT_Commands_Manual_V1.2  
- **File Size:** 1.19 MB  
- [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm511s%2F)

### Hardware Development Resources

- **File Name:** Quectel_HCM511S_2D_Dimensions_V1.0  
- **File Size:** 144.49 KB  
- [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm511s%2F)

- **File Name:** Quectel_HCM511S_3D_Dimensions_V1.0  
- **File Size:** 468.58 KB  
- [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm511s%2F)

- **File Name:** Quectel_HCM511S_Footprint&Part_V1.0  
- **File Size:** 208.43 KB  
- [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm511s%2F)

- **File Name:** Quectel_HCM511S_Hardware_Design_V1.0  
- **File Size:** 2.10 MB  
- [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm511s%2F)

### ToolKit

- **File Name:** QFlash_V8.0_EN  
- **File Size:** 326.70 MB  
- [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm511s%2F)

### User Guide

- **File Name:** Quectel_HCM511S&HCM512S_TE-B_User_Guide_V1.1  
- **File Size:** 1.58 MB  
- [Login](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm511s%2F)

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## Also of interest

- [MCU Bluetooth HCM010S-E](https://www.quectel.com/product/mcu-bluetooth-hcm010s-e/)
- [MCU Zigbee & BLE KCMA32S](https://www.quectel.com/product/kcma32s-mcu-zigbee-ble-module/)
- [KGM133S Matter, Thread, Zigbee & BLE module](https://www.quectel.com/product/matter-thread-zigbee-ble-kgm1335-module/)