S87C751-4N24 8-bit microcontroller family

General Description

The Philips 83C751/87C751 offers the advantages of the 80C51 architecture in a small package and at low cost. The 8XC751 Microcontroller is fabricated with Philips high-density CMOS technology. Philips epitaxial substrate minimizes CMOS latch-up sensitivity.

The 8XC751 contains a 2k × 8 ROM (83C751) EPROM (87C751), a 64 × 8 RAM, 19 I/O lines, a 16-bit auto-reload counter/timer, a five-source, fixed-priority level interrupt structure, a bidirectional inter-integrated circuit (I 2 C) serial bus interface, and an on-chip oscillator.

The on-board inter-integrated circuit (PC) bus interface allows the 8XC751 to operate as a master or slave device on the PC small area network. This capability facilitates I/O and RAM expansion, access to EEPROM, processor-to-processor communication, and efficient interface to a wide variety of dedicated PC peripherals.

Features

• 80C51 based architecture
• Inter-Integrated Circuit (PC) serial bus interface
• Small package sizes
  • 24-pin DIP (300 mil “skinny DIP”)
  • 24-pin Shrink Small Outline Package
  • 28-pin PLCC
• 87C751 available in one-time programmable plastic packages
• Wide oscillator frequency range
• Low power consumption:
  • Normal operation: less than 11mA @ 5V, 12MHz
  • Idle mode
  • Power-down mode
• 2k × 8 ROM (83C751)
• 2k × 8 EPROM (87C751)
• 64 × 8 RAM
• 16-bit auto reloadable counter/timer
• Fixed-rate timer
• Boolean processor
• CMOS and TTL compatible
• Well suited for logic replacementconsumer and industrial applications
• LED drive outputs