D80C49C 8-Bit Microcontroller DIP 40-pin

D80C49C 8-Bit Microcontroller

The D80C49C is a high-speed, single-chip CMOS microcomputer that integrates a complete 8-bit computing system onto one piece of silicon. Its core comprises an 8-bit CPU, which efficiently executes a set of 98 instructions. The architecture includes an Arithmetic Logic Unit (ALU) capable of arithmetic, logic, and decimal adjust functions, an accumulator for data manipulation, and two sets of working registers for efficient context switching. This integrated design provides a self-contained processing unit for embedded control tasks.

This microcontroller features 2K bytes of on-chip mask-programmable ROM for program storage and 256 bytes of RAM for data handling. It includes sophisticated control circuitry for managing operations, including an internal timer/event counter for generating precise delays or counting external pulses. The system supports an 8-level stack for subroutine handling and features interrupt capability for responsive event-driven programming. It can also single-step through instructions, which is a valuable feature for system debugging and development.

Fabricated using CMOS technology, the D80C49C is designed for low power consumption. It employs advanced standby functions, including HALT and STOP modes, to minimize power drain significantly during inactive periods. The device operates from a single power supply ranging from +2.5V to +6.0V. For system expansion, it offers expandable memory and I/O ports, utilizing a bidirectional data bus and dedicated control signals like ALE, RD, and WR to interface with external components.

Features:

• 98 Instructions.
• 1.25 μs Instruction Cycle Time at 12 MHz.
• Addition, Logic, and Decimal Adjust Functions.
• 2K x 8-Bit ROM.
• 256 x 8-Bit RAM.
• Standby Function (HALT and STOP modes).
• 8-Level Stack.
• Two Sets of Working Registers.
• Interrupt Capability.
• Two Test Inputs (T0, T1).
• Internal Timer/Event Counter.
• Input/Output Ports (8 bits x 2).
• Expandable Memory and I/O Ports.
• Single-Step Function.
• Internal Clock Generator.
• CMOS Technology.
• Single Power Supply (+2.5 to +6.0 V).
• Intel 8049H Pin Compatible.

Specifications:

Pinout Diagram:

Applications:

• Embedded Control Systems.
• Industrial Automation.
• Consumer Electronics.
• Automotive Control Units.
• Instrumentation and Measurement.
• Low-Power Battery-Operated Devices.

Package Contents:

• 1x D80C49C 8-Bit Microcontroller DIP 40-pin

Datasheet