Quectel KCMCA6SAAMD-0L – WM-Bus Module, Cortex-M33, 868 MHz

Quectel KCMCA6SAAMD-0L is a WM-Bus module from the KCMCA6S series in LCC form factor, based on the Silicon Labs EFR32FG23 chipset with an ARM Cortex-M33 processor and supporting the EN13757-4 wireless M-Bus standard.

Series overview

Quectel's KCMCA6S series comprises sub-GHz WM-Bus modules combining an integrated MCU, a sub-GHz transceiver and a built-in software stack. According to the manufacturer, the modules target smart metering and AMI (advanced metering infrastructure) applications for water, electricity, gas and heat meters.

Configuration and features

• ARM Cortex-M33 processor with up to 78 MHz clock speed
• 32 KB SRAM and 256 KB flash memory integrated
• 868 MHz frequency band, with 169 MHz and 433 MHz listed by the manufacturer as under development
• Interfaces: USART, SWD and 11x GPIO, with optional EUSART, I2C and ADC via pin multiplexing
• LCC package with dimensions of 25.4 mm x 14.0 mm x 2.9 mm
• Operating temperature range of -40 °C to +85 °C

Typical use cases

The module suits applications requiring a compact, low-power WM-Bus connection.

• Smart meters for water, gas, electricity and heat
• Advanced metering infrastructure (AMI) systems
• Space-constrained IoT end devices with sub-GHz connectivity

Note for design-in and procurement

Because the exact variant designation within the KCMCA6S series can affect details such as the integrated SAW filter, it is advisable to clarify quantities, lead times and sample availability before finalizing the design. Get in touch with our team.