32M-BIT MASK-PROGRAMMABLE ROM 4M-WORD BY 8-BIT (BYTE MODE) / 2M-WORD BY 16-BIT (WORD MODE) PAGE ACCESS MODE32M - BIT掩膜可编程ROM 4M - WORD ×8位(字节模式) / 2M -字×16位(字模式)的页面访问MODE