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High precision ADC, 17.4bits ENOB at 8sps and 200x Gain, 1 differential or 3 single-ended inputs, with offset calibration capability

Low noise, high input impedance preamplifier with selectable gain: 1, 12.5, 50, 100, or 200

8 bits RISC ultra low power MCU, 49 instructions and 6 stack levels. The MCU current consumption is 600μA typically at 3V and 2MHz operating clock rate, 2μA at standby and 32kHz clock, and 1μA at sleep

16k Bytes OTP, 256 Bytes SRAM

Built-in OTP with low programming voltage at 2.4~3.6V, can replace external EEPROM

Internal RC oscillator. No external clock source needed

8 bits interrupt timer

Built-in temperature sensor, supports single point calibration

9 LED ports that can drive up to 72 LEDs, 72mA sink current, source current selectable at 4.5/6/7.5/9/10.5/12mA, LED duty cycle selectable

Selectable voltage source for external transducer excitation: 2.4V/2.6V/2.9V/3.3V

Flexible battery voltage detection: 2.0~3.3V

Schmitt trigger input, pull up resistor selectable

Watch Dog Timer

Low voltage detection and power on reset circuit

Operating voltage range: 2.4~3.6V

Operating temperature range: -40~85?C