The OB38R08T1W24SP is a Other Processors and Microcontrollers (MCUs) SOP24(300mil) RoHS manufactured by On-Bright. It is a monolithic 8-bit microcontroller core, compatible with the MCS®51 instruction set and pin-out. The device has 8K bytes of in-system Flash program memory with ISP (In-System Programming) capability, accompanied by 256 bytes of RAM, three 16-bit timers/counters, a 32-bit hardware multiplier, a serial I/O port, and four 8-bit I/O ports with three interrupt sources. It utilizes a 12-MHz Crystal Oscillator and 10MHzOSC, giving this microcontroller a total execution time of 12 clock cycles. Other features of the OB38R08T1W24SP include an on-chip power-on reset, 38 I/O pins, programmable clock output, an 8-level Deep Power-Down Mode, and an Extended Watchdog Timer. The device also integrates the ISP of Flash with readback capability and a Run-time Software Selectable Boot-Loader, as well as an Enhanced Security Protection feature.