NUVOTONE IC WITH FULL DEVELOPMENT BOARD
w78E052D IC + Full Development Board + Max 232 IC +USB-
Nuvotone IC w78E052D is direct replacement to 89S52 IC.
Added advantage is that it has factory loaded Boot Loader & you can program it through UART.
KEIL uVision can be used to develop HEX code , same way as for 89S52.