AS6031F1-BQFM

Overview

The AS6031F1-BQFM is an ultrasonic flow converter (UFC) from ScioSense, designed for next-generation water and heat meters. It integrates a 32-bit CPU core with protected flow firmware programmed into non-volatile RAM (NVRAM). The device features a high-precision analog front-end supporting sensor frequencies from 50 kHz to 4 MHz under a 2.5 V to 3.6 V supply. Key technical specifications include a QFN48 package measuring 7 mm x 7 mm, operating temperatures ranging from -40°C to +85°C, and support for up to 31 cross-zero measurements. It utilizes SPI serial interface and general-purpose I/O units, including a pulse interface.

Feature Summary

• Integrated 32-bit CPU with pre-programmed protected flow firmware in NVRAM for complete flow and volume calculation
• Advanced high-precision analog front-end with programmable gain amplifier for weak signal detection
• Low power consumption enabling multi-year battery life for utility metering applications

Applications

• Utility water meters
• Industrial water meters
• Heat energy meters
• Gas meters
• Volume counters

Procurement Notes

Verify the specific suffix BQFM against official ScioSense documentation to confirm exact packaging and tape-and-reel specifications. Ensure compatibility with required sensor frequencies and voltage ranges before integration. Confirm that the pre-programmed firmware meets regulatory requirements for your target market.

Selection Notes

Select the AS6031F1-BQFM when integrated flow calculation capabilities are required without external processing overhead. This model is suitable for applications needing robust low-flow detection and precise time-of-flight measurement within a compact QFN48 footprint. Consider the AS6031-QF_DK evaluation kit for initial system validation.

Part Context

The AS6031 series builds upon the proven TDC-GP30 platform, offering a compact solution for ultrasonic flow conversion. The F1 variant specifically includes factory-programmed flow algorithms in NVRAM, simplifying development by handling complex calculations internally. It serves as a System-on-Chip (SoC) alternative to discrete component designs.

Replacement Considerations

Direct replacements may include the standard AS6031-BQFM if custom firmware programming is feasible. Verify pinout compatibility and software configuration differences between the F1 (pre-programmed) and base models.