Freescale MC9S08LL16自动调温器参考设计
Freescale 公司的自动调温器参考设计采用带LCD驱动器的MC9S08LL16超低功耗MCU. 自动调温器调节系统,房间或建筑物的温度,保持在所需的温故而知新范围.为了控制温度,数字自动调温器连接到加热器,通风和空调(HVAC)单元,为HVAC系统提供指示. MC9S08LL16的超低功耗和8位HCS08 CPU很适合用在低功耗的LCD应用.本文介绍了MC9S08LL16主要特性,方框图以及自动调温器参考设计方框图,各部分电路图和完整的电路图与温度传感器的各点温度系数.
A thermostat regulates the temperature of a system, room, or building, keeping the temperature at a desired level. There are different ways to get the temperature measurement in an electronic system, for example the use of a thermistor, thermocouples, and in some cases integrated circuits. To control the temperature a digital thermostat is typically connected to an HVAC unit. The thermostat provides voltage to the heater, venting, and air conditioning (HVAC) terminals indicating to the HVAC system, what should be turned on based on the current system temperature.
The thermostat reference design is an example of how a thermostat can be built taking advantage of the MC9S08LL16 features. The main features of this microcontroller that makes it ideal for low-power LCD applications are:
Thermostat Reference Design Using the MC9S08LL16 Ultra-Low-Power MCU with LCD Driver
MC9S08LL16 系列主要特性:
..
