DESCRIPTION
●The Philips 8XC51/31 is a high-performance static 80C51 design fabricated with Philips high-density CMOS technology with operation from 2.7V to 5.5V.
●FEATURES
●•8051 Central Processing Unit
●–4k ×8 ROM (80C51)
●–128 ×8 RAM
●–Three 16-bit counter/timers
●–Boolean processor
●–Full static operation
●–Low voltage (2.7V to 5.5V@ 16MHz) operation
●•Memory addressing capability
●–64k ROM and 64k RAM
●•Power control modes:
●–Clock can be stopped and resumed
●–Idle mode
●–Power-down mode
●•CMOS and TTL compatible
●•TWO speed ranges at VCC= 5V
●–0 to 16MHz
●–0 to 33MHz
●•Three package styles
●•Extended temperature ranges
●•Dual Data Pointers
●•Security bits:
●–ROM (2 bits)
●–OTP/EPROM (3 bits)
●•Encryption array—64 bytes
●•4 level priority interrupt
●•6 interrupt sources
●•Four 8-bit I/O ports
●•Full–duplex enhanced UART
●–Framing error detection
●–Automatic address recognition
●•Programmable clock out
●•Asynchronous port reset
●•Low EMI (inhibit ALE)
●•Wake-up from Power Down by an external interrupt (8XC51)
