The TMP87C409BM-4H57 is an 8-bit single-chip microcomputer manufactured by Toshiba Semiconductor and Storage. It's part of the TLCS-870 series and designed for embedded control applications that require a balance of processing power and efficient memory management. This microcontroller integrates a central processing unit (CPU), read-only memory (ROM), random-access memory (RAM), and a range of peripheral functions all onto a single chip, reducing the overall system cost and size. The device utilizes an instruction set designed for efficient code execution and has features that are tailored for real-time control applications. The '-4H57' suffix indicates a particular configuration or programming of the ROM within this microcomputer.

Applications

• Consumer Electronics: Found in VCRs, audio equipment, and home appliances, providing control and automation.
• Industrial Control Systems: Used in motor control, process monitoring, and automation systems.
• Automotive Electronics: Incorporated into dashboard controls, engine management systems, and security systems within vehicles.
• Office Automation: Integrated into printers, fax machines, and copiers for managing operations.

Features

• 8-bit CPU: Provides appropriate processing power for handling a variety of control applications.
• On-chip ROM: Stores the program code, which may eliminate the need for external memory components in some instances.
• On-chip RAM: Provides memory for working data and data manipulation during program execution.
• Timers/Counters: Enable accurate timing and counting, essential for real-time control tasks.
• Serial Communication Interface: Allows communication with external devices such as sensors, actuators, and other microcontrollers.
• Input/Output (I/O) Ports: Enable connectivity to external devices and sensors.
• Interrupt Controller: Enables fast response to external events.

Benefits

• Integration: Lowers system costs and physical dimensions by combining many functions onto a single chip.
• Flexibility: Can be readily programmed to manage various control tasks.
• Real-time Performance: Enables precise timing and control in real-time applications.
• Low Power Consumption: Suitable for use in portable, battery-powered devices.
• Reliability: Designed for stable performance in challenging environments.

Additional Details

The TMP87C409BM-4H57 operates within specified voltage and temperature ranges, as detailed in Toshiba’s documentation. The ROM size, RAM size, and number of I/O ports depend on the configuration. An external clock source is generally needed for proper operation. Specifics on the ROM contents and mask options related to the '-4H57' version can be found in its datasheet.