DESCRIPTION
The Philips 83C749/87C749 offers many of the advantages of the 80C51 architecture in a small package and at low cost.
The 8XC749 Microcontroller is fabricated with Philips high-density CMOS technology. Philips epitaxial substrate minimizes CMOS latch-up sensitivity.
The 8XC749 contains a 2k × 8 ROM (83C749) EPROM (87C749), a 64 × 8 RAM, 21 I/O lines, a 16-bit auto-reload counter/timer, a fixed-priority level interrupt structure, an on-chip oscillator, a five channel multiplexed 8-bit A/D converter, and an 8-bit PWM output.

FEATURES
• Available in erasable quartz lid or One-Time Programmable plastic packages
• 80C51 based architecture
• Small package sizes
    – 28-pin DIP
    – 28-pin Shrink Small Outline Package (SSOP)
    – 28-pin PLCC
• Wide oscillator frequency range: 3.5MHz to 16MHz
• Low power consumption:
    – Normal operation: less than 11mA @ 5V, 12MHz
    – Idle mode
    – Power-down mode
• 2k × 8 ROM (83C749) EPROM (87C749)
• 64 × 8 RAM
• 16-bit auto reloadable counter/timer
• 5-channel 8-bit A/D converter
• 8-bit PWM output/timer
• 10-bit fixed-rate timer
• Boolean processor
• CMOS and TTL compatible
• Well suited for logic replacement, consumer and industrial applications