87C251SQ Description
16 Kbytes (SB/SQ), 8 Kbytes (SA/SP), or without ROM/OTPROM/EPROM s 16-bit Internal Code Fetch s 64-Kbyte Extended Stack Space s On-chip Data RAM Options: 1-Kbyte (SA/SB) or 512-Byte (SP/SQ) s 8-bit, 2-clock External Code Fetch in Page Mode s Fast MCS 251 Instruction Pipeline s User-selectable Configurations: External Wait States (0-3 wait states) Address Range & Memory Mapping Page Mode s 32 Programmable I/O Lines s...