Overview
This thermostat reference design is an example of how a thermostat can be built taking advantage of the features of the NXP® MC9S08LL MCU, which has a very flexible LCD module that allows driving an 8x24 LCD and power saving modes while keeping track of the time and the LCD information and a 12-bit analog to digital converter.
Features
- Low-power battery (2 AA) operation
- Small Glass (2-4 uA)
- Large Glass (7-9 uA)
- Support for two LCD displays
- 8x24 mode for greater flexibility
- 2x26 mode optimized for lowest power
- Standard HVAC connectivity
- Temperature sensors
- Programmable heat/cool temp
Block Diagram

Board

Design Resources