2-2.51架构(1 Architecture) ◇8051内部ROM ROM: Read only memory(只读存储器) 般用于存放程序和表格等不常改变的数据 常见的ROM种类 ◇掩膜ROM( Masked rom EPROM (Electrically Programmable ROM) ◇ EEPROM(E2PROM) ◇ Flash rO o OTP ROM(One Time Programmable ROM 8051单片机的ROM是掩摸ROM: 容 量:4096byte(212) 地址范围:0000H~1FFFH SiChuan Engineering Technical College-1959 Copyright c Http: // mcu.scete. netSiChuan Engineering Technical College-1959 7 Copyright © Http:// mcu.scetc.net 2-2. 51架构(51 Architecture) 8051内部ROM ROM:Read Only Memory(只读存储器) 一般用于存放程序和表格等不常改变的数据 常见的ROM种类: 掩膜ROM (Masked ROM) EPROM (Electrically Programmable ROM) EEPROM (E2PROM) Flash ROM OTP ROM (One Time Programmable ROM) 8051单片机的ROM是掩摸ROM: 容 量:4096byte(212) 地址范围:0000H~1FFFH