87C749

Features:

*Available in erasable quartz lid or One-Time Programmable plasti 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


Pinout




Specifications

PARAMETER	RATING	UNIT
Storage temperature range	65 to +150
Voltage from VCC to VSS	0.5 to +6.5	V
Voltage from any pin to VSS (except VPP )	0.5 to V CC + 0.5	V
Power dissipation	1.0	W
Voltage from VPP pin to VSS	0.5 to + 13.0	V

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.
The EPROM version of this device, the 87C749, is available in plastic one-time programmable (OTP) packages. Once the array has been programmed, it is functionally equivalent to the masked ROM 83C749. Thus, unless explicitly stated otherwise, all references made to the 83C749 apply equally to the 87C749.
The 83C749 supports two power reduction modes of operation referred to as the idle mode and the power-down mode.