Non-contact Infrared Electronic Thermometer HT67F5640 Characteristics Operating Voltage : 3V or 9V battery ‒ external LDO required for 9V Standby current : < 10µA Measurement Range ◆ ◆ Body temperature : 32°C ~ 42.9°C Object temperature : 0°C ~ 100°C Accuracy : ±0.3°C HT67F5640 MCU Solution Display Resolution : 0.1°C Measurement Distance : 5 ~ 15cm Internal EEPROM : 648 – for measurement data storage Integrated 20 bit resolution Σ-∆ A/D converter Integrated LDO, CP2, 10-bit TM3, LCD driver (284) Flash Program Memory : 4K16; RAM Data Memory : 2568 Application Areas Small Household Electrical Appliances, Measuring Instruments, Industrial Control, Medical and Health Equipments, etc. Block Diagram Thermopile Sensor Button5 284 LCD 20 bit Σ-∆ A/D I/O 204 LCD HT67F5640 PWM BAT. Application Circuit LDO TM Buzzer LCD 20 SEGs 4 COMs Thermopile Sensor A/D Sampling Circuit