说明：  AMT630A Emulator and Firmware AMT630A firmware for mini TFT screens The AMT640A is a relative common video controller chip found in cheap mini TFT screens with composite input. Those screens are often sold as "car rear view monitor" (or by similar names), although they are essentially fully-fledged portable TVs (minus tuner/speaker, and without advanced inputs like S-video or RGB). The chip contains a 8031/8051 microprocessor, with firmware stored on an external SPI-bus FLASH memory chip