COP8SAB728M8

Overview

The COP8SAB728M8 is an 8-bit CMOS microcontroller from the COP8SA family, featuring 2k bytes of One-Time Programmable (OTP) EPROM and 128 bytes of RAM. It utilizes a modified Harvard architecture with a single-cycle instruction cycle time. The device supports a supply voltage range of 2.7V to 5.5V and operates within temperature ranges of -40°C to +85°C or -40°C to +125°C depending on specific suffixes. It includes a 16-bit timer/counter, MICROWIRE/PLUS serial interface, and Multi-Input Wakeup logic.

Feature Summary

• Low electromagnetic interference design utilizing gradual turn-on output drivers and internal current smoothing filters.
• Versatile instruction set optimized for code efficiency with single-byte, single-cycle execution capabilities.
• Flexible I/O configuration allowing software-selectable TRI-STATE, push-pull, and weak pull-up modes.
• Integrated power management features including HALT and IDLE modes with multi-sourced wakeup interrupts.

Applications

• Battery-powered consumer electronics requiring low EMI and extended battery life
• Industrial control systems needing robust interrupt handling and high current outputs
• Embedded applications utilizing MICROWIRE/PLUS serial communication interfaces

Procurement Notes

Verify the exact operating temperature range and package type against the full part number suffix before procurement. Confirm OTP programming requirements and development tool compatibility, as windowed versions are necessary for hardware debugging. Ensure that the selected variant matches the specific voltage and timing specifications required by the target application circuit.

Selection Notes

Select this component when a cost-effective 8-bit solution with low radiated emissions is required. Consider the COP8SAB7 series for designs needing 2k program memory. Evaluate the available packages, such as 28-pin DIP or SOIC, based on board space constraints. Ensure the system clock requirements align with the supported crystal, resonator, or internal R/C oscillator options.

Part Context

This device belongs to the COP8SA family, which serves as a pin-compatible superset of the older COP800 family. It replaces legacy devices in new designs while offering enhanced features like reduced EMI and flexible packaging options. The family integrates the core COP8 CPU with various memory sizes and peripheral configurations to support diverse embedded control applications.

Replacement Considerations

COP8SAB728N9

FAQ

What is the maximum instruction cycle time for the COP8SAB728M8?

The instruction cycle time is 1 µs when using a crystal/resonator or external clock at 4.5V ≤ VCC ≤ 5.5V.

Does the COP8SAB728M8 support direct access to data tables in program memory?

Yes, the modified Harvard architecture allows data tables to be accessed directly from program memory without being lost during power down.

How many high current output pins are available on this device?

The device provides up to 12 high current output pins suitable for driving LEDs, motors, or speakers.