The JHM3802 is a programmable SOC integrated circuit with 32-bit embedded processor and signal conditioning of sensor. The preamplifier, 24-bit ADC and high linear temperature sensor are all integrated in the JHM3802, and together with the USB1.1/UART ports, the 24-bit digital sound processor. It is a high cost-efficient MCU integrated circuit.
The working voltage is 2V ~ 5.5V, and the 8COMx32SEG stroke segment liquid crystal driver circuit is also integrated in the JHM3802. The two internal LDOs (3.3V and 1.8V) could be the supply voltage for others in the system.
The 64kByte MTP, 256Byte EEPROM and 16Kbyte SRAM are all integrated in the system. And the JHM3802 supports SWD, Keil, etc. with high security. The ID number is based on the fuse so it can’t be erased or changed. When the fuse is damaged the SWD communication is stopped and there is no access to the SRAM.
JHM3802 Block Diagram