Stock code：688130
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Operating Voltage
2.4~3.6V
Operating Current
1.1mA
ADC ENOB
19.5bits@8sps
Gain = 100
Gain = 100
Peripherals
RTC、UART
Package
SSOP24
SD8302 is a SoC product with 20 bits ADC and 16k Bytes OTP memory. The built-in OTP has low programming voltage at 2.4~3.6V. It can be used in place of external EEPROM. Only 5 capacitors are needed in the periphery for body weight and other domestic weight scale applications.
The IC was designed with ultra low power technology. It operates at 2MHz clock rate that originates from an 4MHz internal RC oscillator. At 3V operating voltage, the typical operating current is only 1.1mA (excluding sensor power consumption), which is ideal for battery-powered applications.
Three working modes are provided so users can select the optimum choice between speed and power. They are normal mode, standby mode, and sleep mode.
High precision ADC, ENOB=18.5bits@8sps, 1differential or 3 single-ended inputs
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 600uA typically at 3V and 2MHz operating clock rate, 1.8uA at standby and 32kHz clock, and less than 1uA at sleep
16k Bytes OTP program memory storage, 256 Bytes SRAM data storage
Low OTP programming voltage at 2.4~3.6V, can replace external EEPROM
Built-in high frequency 4MHz and low frequency 32kHz RC oscillation, no external clock needed
Built-in RTC module, together with external 32.768kHz crystal to show seconds, minutes and hours
8-bit interrupt timer, support PFD output
Built-in temperature sensor, supports single point calibration
Built-in 1 channel UART communication port
10SEG X 4COM LCD drive, programmable boost module to maintain luminance at low supply voltage
Selectable voltage source for external, transducer excitation: 2.4V/2.6V/2.9V/3.3V
Flexible battery voltage detection: 2.4~3.0V
All logic inputs are Schmitt triggered with optional pull up resistor
Watch Dog Timer
Low voltage detection and power on reset circuit
Operating voltage range: 2.4~3.6V
Operating temperature range: -40~85?C
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Tel:15325714186
Email:sales-2@www.8sua4x.cn
Address:5/F, Bldg4, Topsun Technology Park 351 Changhe Road, Binjiang District Hangzhou, Zhejiang, China
Postal Code:310052
