Rolling Code RF Receiver HT68F30 Flash Type MCU with EEPROM Characteristics Integrated EEPROM -- allows storage of relevant application data such as calibration data, manufacturing parameters, etc. Fully integrated RC system oscillator -- reduced external components such as resistor, crystal, etc. Supports up to 6 remote controllers 4 LEDs indicate 4-key remote controller status Supports ICP HT68F30 Application Areas Motorcycle, Car, Wireless RF Receiver Applications Application Circuit Status Key Indicator 3V Power / RF Receiver Indicator LED 3V 3V 3V R1 560 R2 560 R3 560 R4 560 D1 D2 D3 D4 No1 No2 No3 ANT1 . No4 3V 5V BT1 C1 22uF CR2032 R5 2.2K D6 3V RX C4 0.1uF 3 2 PB4/XT2 VSS PA0/C0/TP0_0 PA1/TP1A....... PA2/TCK0/C0+ PA3/INT0/C0-.. PA4/INT1/TCK1 PA5/C1X/SDO.. PA6/SDI/SDA.. PB2/OSC2 PB0/RST PB3/XT1 PB5/SCS PA7/SCK/SCL. PB1/OSC1 1 16 15 14 13 12 11 5 8 4 9 10 6 D5 U2 L1 LX_Ctrl RF_Data_In 100uH S1 C5 104 C2 4.7uF 1N5817 MD1 HT7750 3 LX GND U1 VDD Vout 1 2 3 4 5 2 1 7 C3 22uF C6 104 RF_Module WakeUP HT68F30 16NSOP MCU : HT68F30 On / Off Switch RF Receiver Module Power Circuit -- 3V to 5V RF Receiver Module