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.
●The 8XC51/31 contains a 4k × 8 ROM, a 128 × 8 RAM, 32 I/O lines, three 16-bit counter/timers, a six-source, four-priority level nested interrupt structure, a serial I/O port for either multi-processor communications, I/O expansion or full duplex UART, and on-chip oscillator and clock circuits.
●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)
