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TIDM-FRAM-WATERMETER
Low-Cost Water Meter Implementation with FRAM Microcontroller Reference Design
TIDM-FRAM-WATERMETER
Overview
This reference design, featuring the MSP430FR4133 FRAM-based MCU, is a fully-functional battery powered magnetic pulse water meter with wired and wireless automatic meter reading (AMR) function. The instantaneous and total flow is displayed on the LCD. This design works in low power mode and reduces CPU engagement, which helps to reduce overall power consumption.
Features
- Magnetic pulse measurement
- 2.9uA standby current
- Non-volatile on-chip FRAM real-time storage
- Support NFC and Sub-1GHz BoosterPack
- Battery voltage monitor
- This end equipment design is tested and includes HW, firmware, GUI, demo and User's Guide
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDU517A.PDF (10289 K)
Reference design overview and verified performance test data
TIDRAX2.PDF (101 K)
Detailed schematic diagram for design layout and components
TIDRAX3.PDF (61 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRAX5.ZIP (150 K)
Detailed overview of design layout for component placement
TIDRAX6.ZIP (2880 K)
Files used for 3D models or 2D drawings of IC components
TIDC668.ZIP (4143 K)
Design file that contains information on physical board layer of design PCB
TIDRAX4.ZIP (373 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
MSP430 microcontrollers
MSP430FR4133 — 16 MHz MCU with 16KB FRAM, 2KB SRAM, 10-bit ADC, LCD, UART/SPI/I2C, IR logic, timer
Data sheetBrushed DC (BDC) motor drivers
DRV8837 — 12-V, 1.8-A H-bridge motor driver
Data sheetLinear & low-dropout (LDO) regulators
TPS782 — 150-mA, nano-IQ, low-dropout voltage regulator with enable from -40°C to +125°C
Data sheetRS-485 & RS-422 transceivers
SN65HVD75 — 3.3-V half-duplex RS-485 transceiver with IEC ESD, 20 Mbps
Data sheetStart development
Technical documentation
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| Type | Title | Date | |
|---|---|---|---|
| Technical article | New reference designs available based on the new MSP430FR4133 MCU | Oct. 16, 2014 | |
| Design guide | Water Meter Implementation With MSP430FR4xx Design Guide (Rev. A) | Oct. 15, 2014 |
Related design resources
Hardware development
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Software development
IDE, CONFIGURATION, COMPILER OR DEBUGGER
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