# MCU Bluetooth HCM111Z

## Summary
- BLE 5.3 module
- LCC form factor
- 15.0 mm × 12.0 mm × 2.25 mm
- 0.62 g
- Operating temperature of -40°C to +85°C

## Key features
- BLE 5.3
- 48 KB SRAM and 512 KB flash
- Built-in Codec (Optional)
- Multi-link network
- 4th RF coaxial connector, external antenna pin, PCB antenna (Optional)
- 13 GPIOs for UART, SWD, SPI, I2C, ADC, PWM and I2S functions in QuecOpen solution

## Overview
HCM111Z is a high-performance MCU Bluetooth module launched by Quectel. It boasts a Cortex-M3 processor with a frequency of up to 48 MHz and supports BLE 5.3. The module features built-in 48 KB SRAM and 512 KB flash, ensuring efficient performance. HCM111Z comes in an LCC form factor with an ultra-compact size of 15.0 mm × 12.0 mm × 2.25 mm, which optimizes the size and cost for end-products and is compatible with diverse designs.

HCM111Z supports up to 13 GPIOs for UART, SWD, SPI, I2C, ADC, PWM and I2S functions in QuecOpen® solution, and Bluetooth low power mode, which provides flexibility and versatility for a range of applications, especially in smart homes and industrial IoT scenarios. The built-in audio codec of HCM111Z is optional and enables microphone pickup and audio playback, which is suitable for smart devices such as smart voice remote controls, smart toy cars, sports health and home appliances.

The multi-connection capability of the module supports dozens of devices to form a communication network, which can be applied in micro-inverters, energy storage, charging piles, etc. In addition, HCM111Z is also widely used in fields such as meters and sensors.

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

## Documentation and resources
### AT Commands Manual
- [Quectel_HCM111Z_AT_Commands_Manual_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm111z%2F) - File Size: 1.51 MB

### Hardware Development Resources
- [Quectel_HCM111Z_Hardware_Design_V1.2](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm111z%2F) - File Size: 1.85 MB
- [Quectel_HCM111Z_2D_Dimensions_V1.1](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm111z%2F) - File Size: 368.78 KB
- [Quectel_HCM111Z_3D_Dimensions_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm111z%2F) - File Size: 1.27 MB
- [Quectel_HCM111Z_Footprint&Part_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm111z%2F) - File Size: 643.59 KB

### ToolKit
- [QFlash_V8.0_EN](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm111z%2F) - File Size: 326.70 MB

### User Guide
- [Quectel_HCM111Z_Firmware_Flashing&Upgrade_Guide_V1.0](https://www.quectel.com/login/?redirect=https%3A%2F%2Fwww.quectel.com%2Fproduct%2Fmcu-bluetooth-hcm111z%2F) - File Size: 518.27 KB

## Related products
### [YF0011KA Wi-Fi adhesive mount FPC + cable dipole embedded antenna](https://www.quectel.com/product/yf0011ka-wi-fi-bt-adhesive-mount-antenna/)
![YF0011KA Wi-Fi adhesive mount](https://www.quectel.com/content/uploads/2024/03/YF0011AA-1.png)

### [YSAN026XX DC~6GHz RP SMA female to IPEX MHF1 cable with an o-ring](https://www.quectel.com/product/ysan026xx-antenna-cable-2/)
![YSAN026XX Cable](https://www.quectel.com/content/uploads/2024/03/YSAN026XX.png)

### [YEBT002W1AM Wi-Fi terminal mount rubber monopole external antenna](https://www.quectel.com/product/yebt002w1am-wifi-terminal-mount-antenna/)
![YEBT002W1AM Antenna](https://www.quectel.com/content/uploads/2024/09/YEBT002W1AM_1200x950.png)

## 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/)
- [Bluetooth 5.3 HCM320Z](https://www.quectel.com/product/bluetooth-5-3-hcm320z/)