87C453 - NXP

87C453 80C51 8-bit microcontroller family 8K/256 OTP/ROM/ expanded I/O

The Philips 8XC453 is an I/O expanded single-chip microcontroller fabricated with Philips high-density CMOS technology. Philips epitaxial substrate minimizes latch-up sensitivity. The 8XC453 is a functional extension of the 87C51 microcontroller with three additional I/O ports and four I/O control lines. The 8XC453 is available in 68-pin LCC packages. Four c.

Features

• 80C51 based architecture
• Seven 8-bit I/O ports
• Port 6 features:
  – Eight data pins
  – Four control pins
  – Direct MPU bus interface
  – ISA Bus Interface
  – Parallel printer interface
  – IBF and OBF interrupts
  – A flag latch on host write
• On the microcontroller:
  – 8k × 8 EPROM Quick pulse programming algorithm Two-level program security system
  – 256 × 8 RAM
  – Two 16-bit counter/timers
  – Two external interrupts
• External memory addressing capability
  – 64k ROM and 64k RAM
• Low power consumption:
  – Normal operation: less than 24mA at 5V, 16MHz
  – Idle mode
  – Power-down mode
• Reduced EMI
•.