TP87C251SQ PDF File ( Datasheet )

PRELIMINARY 8XC251SA, SB, SP, SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER Commercial, Express s Real-time and Programmed Wait State Bus Operation s Binary-code Compatible with MCS® 51 s Pin Compatible with 44-pin PLCC and 40pin PDIP MCS 51 Sockets s Register-based MCS® 251 Architecture 40-byte Register File Registers Accessible as Bytes, Words, or Double Words s Enriched MCS 51 Instruction Set 16-bit and 32-bit Arithmetic and Logic Instructions Compare and Conditional Jump Instructions Exp