Electronic scheme development - Intelligent rope skipping scheme

　　 Intelligent rope skipping mainly consists of the main handle 、 The auxiliary handle and rope are composed of three parts , The main handle is equipped with LED display , It can display rope skipping mode in real time 、 Rope skipping time and number of times . Intelligent rope skipping is charging rope skipping ,USB The jack is on the main handle . Short charging time , Long endurance . Charge 1.5 Hours , Can continue to work 60 God , Environmental protection and power saving . Intelligent rope skipping has 5 Two rope skipping modes are available . Including free jumping 、 Countdown jump 、 Countdown jump 、 Family mode and competitive mode . The first three modes , Don't connect your phone APP You can use , The three modes can be switched randomly . The latter two modes need to be connected with the mobile phone through Bluetooth APP Sink motion connection , You can enter sports mode .

　　 Intelligent rope skipping is mainly composed of two parts , It mainly includes handle and rope , The handle includes ： Control module 、 Sensor module 、 Display module 、 Wireless transmission module 、 Enclosure and power supply module .

　　SIC8P3538 It's a 8 position CMOS Single chip MCU, built-in 8K×16bits One time programmable OTP ROM（ It can only be divided into 4K and 4K Twice use ）, built-in 256×8bits Data storage SRAM, With a 1 Full differential analog signal input 24 position ADC, Low noise amplifier and 4×16 Of LCD drive , built-in UART Serial communication module , Built in low voltage burning control circuit , The minimum 2.5V You can burn it yourself .

　　 Its characteristics are as follows ：

　　8 Bit MCU MCU,39 A single word instruction ,8 Level storage stack

　　 Ultra-low power consumption ： Normal mode 500μA（500KHz,3.3V）, In sleep mode, the current is less than 2μA

　　8K×16bits OTP ROM（ Can be divided into 4K and 4K Twice use ）

　　256×8bits SRAM

　　UART Serial port communication

　　 built-in 16MHz oscillator

　　 external 32768Hz Crystal oscillator （RTC）、4MHz~16MHz Crystal oscillator

　　1 Full differential analog input 24 position ADC, Internally integrated programmable gain amplifier ,ADC The output rate of

　　30Hz~3.9KHz

　　 Built in charge pump 、 Built in voltage regulator for sensor and modulator 、 Built in temperature sensor

　　8 Bit programmable prescaled 8 Bit timing counter

　　 Watchdog timer WDT

　　14 Bit bidirectional I/O mouth ,1 Circuit buzzer output , Can choose PT27 or PT23 Output , Default PT27 output

　　4×16 Of LCD drive

　　 Power on reset 、 Low voltage reset , Low voltage detection

　　2 External interrupts

　　 Built in low voltage burning control circuit , The minimum 2.5V You can burn it yourself

　　 Provide bare chips

　　 Package form ： Soft seal