COP8SAB728N8

Overview

The COP8SAB728N8 is an 8-bit CMOS microcontroller from the COP8SA family, featuring 2k bytes of One-Time Programmable (OTP) memory and 128 bytes of RAM. It utilizes a modified Harvard architecture with a 1 µs instruction cycle time at 10 MHz CKI. The device operates on a single supply voltage ranging from 2.7V to 5.5V and supports temperature ranges of -40°C to +85°C or -40°C to +125°C. It includes a 16-bit timer/counter with PWM output, MICROWIRE/PLUS serial interface, Multi-Input Wakeup logic, and up to 12 high-current outputs in a 28-pin DIP/SOIC package.

Feature Summary

• Low electromagnetic interference design utilizing patented EMI reduction technology for quiet operation.
• Integrated power management features including user-selectable Power-On Reset, WATCHDOG, and Clock Monitor Logic.
• Versatile I/O configuration allowing software selection between TRI-STATE, Push-Pull, Weak Pull-Up, and High Impedance modes.
• Code-efficient instruction set optimized for compact program memory utilization and fast execution.

Applications

• Low-cost embedded control systems requiring low radiated emissions
• Battery-powered devices utilizing HALT and IDLE power-saving modes
• Industrial controllers needing robust interrupt servicing and watchdog protection

Procurement Notes

Verify the specific temperature grade suffix (e.g., N8 for -40°C to +85°C) against system requirements. Confirm OTP programming capabilities and development tool compatibility, such as MetaLink systems, prior to integration. Ensure pinout alignment with existing designs, as this device is a superset of the COP800 family but requires validation for form-fit-function replacement.

Selection Notes

Select this component when a balance of low cost, small packaging, and advanced features like low EMI is required. Consider the COP8SAB7 series for applications needing 2k OTP memory. Evaluate the available packages, including 28-pin CSP and DIP variants, to match board space constraints. Verify that the 10 MHz clock speed and peripheral sets meet the processing demands of the target application.

Part Context

The COP8SAB728N8 belongs to the COP8SA family of 8-bit CMOS microcontrollers. This family serves as a direct replacement for older COP800 devices in new designs, offering enhanced features while maintaining pin compatibility. The COP8SA series emphasizes low EMI and code efficiency, making it suitable for modern embedded applications where size and noise are critical factors.

Replacement Considerations

COP8SAB728N9 is the commercial temperature variant (0°C to +70°C). COP8SAB728M8/M9 are SOIC package alternatives. COP8SAB7SLB8 is the CSP package option. These parts share identical functionality and pinouts, differing only in temperature rating and physical package type.

FAQ

Is the COP8SAB728N8 compatible with the COP800 family?

Yes, COP8SAx devices are instruction set and pin-compatible supersets of the COP800 Family devices, serving as replacements in new designs.

What oscillator options are supported by this microcontroller?

The device supports Crystal/Resonator options (with or without on-chip bias resistor), External oscillator, and Internal R/C oscillator configurations.

How does the device handle low power consumption?

It offers two power-saving modes: HALT and IDLE. In HALT mode with WATCHDOG disabled, current drain is typically less than 4 µA at 5.5V.