The remote control for a Midea heat pump doesn't seem to be working (IR LED doesn't seem to be transmitting), so I took it apart. On the PCB it's got a couple dozen passives, a 24C08, and a SH77P1652U QFP48. I hadn't heard of that MCU before. It's made by Sino Wealth, and it is a 1T 8051 OTP MCU.