Software
Firmware
TIDA-00838
Heat Cost Allocator with wM-Bus at 868 MHz Reference Design
TIDA-00838
Overview
The TIDA-00838 reference design implements a heat cost allocator system following the EN834 standard with the “two-sensor measurement method". The solution achieves better than 0.5 degrees Celsius accuracy across a range of +20 to +85°C. Two analog temperature sensors are available as matched pairs to eliminate the need for calibration during manufacturing and lowering OEM system cost. Wireless MCU offers wM-Bus support for S-, T- and C-modes (Meter device) at 868MHz and controls the two temperature sensors.
Features
- Highly accurate temperature sensing across environment conditions: better than 0.5 degrees from +20 to +85°C.
- CC1310 SimpleLink(TM) Wireless MCU provides single-chip solution for heat measurement and RF communications
- Sensor Controller interfaces seamlessly to two matched LMT70A, which eliminate the need for calibration during manufacturing and lower OEM system cost
- Example source code for wM-Bus @868 MHz transmission for S, T and C-modes (“Meter” device) under TI RTOS
- Cost-optimized 2-layer PCB in HCA form factor and a 96-segments 4-MUX LCD
- Cap Touch button on the PCB for LCD on/off
Industrial
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUB48.PDF (1785 K)
Reference design overview and verified performance test data
TIDRJQ9.PDF (476 K)
Detailed schematic diagram for design layout and components
TIDRJR0.PDF (98 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRJR1.PDF (224 K)
Detailed overview of design layout for component placement
TIDRJR4.ZIP (983 K)
Files used for 3D models or 2D drawings of IC components
TIDCBN8.ZIP (587 K)
Design file that contains information on physical board layer of design PCB
TIDRJR2.PDF (1670 K)
PCB layer plot file used for generating PCB design layout
TIDRJR3.PDF (2218 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 sheet: PDF | HTMLStart development
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Heat Cost Allocator With wM-Bus at 868 MHz Design Guide | Jan. 21, 2016 | |
| Application note | Wearable Temp-Sensing Layout Considerations Optimized for Thermal Response (Rev. B) | Oct. 23, 2018 | ||
| White paper | RTOS Power Management Emerges as a Key for MCU-based IoT Nodes (Rev. A) | May 11, 2017 | ||
| Technical article | Sub-1 GHz + Bluetooth® low energy and low-power MCUs help make meter reading autom | PDF | HTML | Sep. 23, 2016 |
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