Low-Cost Water Meter Implementation with FRAM Microcontroller Reference Design
TIDM-FRAM-WATERMETER
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Description
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
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Schematic/Block Diagram
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Design Guide
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TI Devices (4)
Order samples, get tools and find more information on the TI products in this reference design.
| Sample & Buy |
Design Kits & Evaluation Modules |
| DRV8837 |
11-V, 1.8-A H-bridge motor driver |
Motor drivers |
Sample & Buy |
View Design Kits & Evaluation Modules |
| MSP430FR4133 |
16 MHz MCU with 16KB FRAM, 2KB SRAM, 10-bit ADC, LCD, UART/SPI/I2C, IR Logic, Timer |
Microcontrollers (MCUs) |
Sample & Buy |
View Design Kits & Evaluation Modules |
| SN65HVD75 |
3.3-V half-duplex RS-485 transceiver with IEC ESD, 20 Mbps |
Interface |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TPS782 |
150-mA, nano-IQ, low-dropout voltage regulator with enable from -40°C to +125°C |
Power management |
Sample & Buy |
View Design Kits & Evaluation Modules |
CAD/CAE symbols
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at https://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
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Technical documentation
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User guide (1)
| Title | Type | Size (KB) | Date |
| | PDF | 10289 |
15 Oct 2014
|
Design files (6)
| | ZIP | 2880 |
03 Oct 2014
|
| | ZIP | 150 |
03 Oct 2014
|
| | ZIP | 373 |
03 Oct 2014
|
| | ZIP | 4143 |
03 Oct 2014
|
| | PDF | 61 |
03 Oct 2014
|
| | PDF | 101 |
03 Oct 2014
|
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