National Semiconductor COP424C, COP425C, COP426C, COP324C, COP325C, COP326C and COP444C, COP445C, COP344C, COP345C Single-Chip 1k and 2k CMOS Microcontrollers
Summary
Discover reliable, low-power single-chip CMOS microcontrollers designed for sophisticated control environments. Featuring fully static operation and integrated memory modules, these MCUs provide high performance while minimizing power dissipation (50 mW typical). This manual offers comprehensive technical specifications, including detailed electrical characteristics and operating limits. Perfect for system integrators and manufacturers requiring dependable performance in medium to large-volume production applications.
Manual Details
| Brand | National |
|---|---|
| Pages | 24 |
| File Size | 340.74 KB |
| Published | June 06, 2026 |
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Frequently Asked Questions
What are the power dissipation characteristics of these microcontrollers?
They offer low power dissipation (50 mW typical) and include an IDLE state and HALT mode for power saving.
Can these chips operate using a single supply voltage?
Yes, the COP424C and COP444C are 28-pin single supply operation devices that accept voltages from 2.4V to 5.5V.
How does the chip feature handle external I/O requirements?
They support a variety of output configurations, including general purpose and TRI-STATE outputs, making them ideal for demanding control environments.
What is the core memory capacity difference between models?
The COP444C/COP445C models feature 2k x 8 ROM and 128 x 4 RAM, while the COP424C/COP425C/COP426C have 1k x 8 ROM and 64 x 4 RAM.