Datasheet Summary
( DataSheet : .. )
PRELIMINARY
8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER mercial/Express s Real-time and Programmed Wait State Bus Operation s Binary-code patible with MCS® 51 s Pin patible 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 User-selectable Configurations:
- External Wait States (0-3 wait states)
- Address Range & Memory Mapping
- Page Mode s 32 Programmable I/O Lines s Seven Maskable Interrupt Sources with Four Programmable Priority Levels s Three Flexible 16-bit Timer/counters s Hardware...