COP8SAC7SLB8

Overview

The COP8SAC7SLB8 is an 8-bit microcontroller from the COP8™ 8SA series, manufactured by National Semiconductor. It features a COP8 core operating at a maximum clock frequency of 10MHz. The device includes 4KB (4K x 8) of One-Time Programmable (OTP) program memory and 128 bytes of RAM. It is housed in a 28-lead Thin Fine-pitch Quad Flat No-Lead (TFQFN) or Chip Scale Package (CSP) with dimensions of 5.5x4.5mm. The unit supports a supply voltage range of 2.7V to 5.5V and operates within a temperature range of -40°C to 85°C.

Feature Summary

• Integrates a high-performance 8-bit COP8 core for efficient instruction execution.
• Provides non-volatile 4KB OTP program storage suitable for fixed-function applications.
• Includes essential peripherals such as PWM, Watchdog Timer, and Power-On Reset.

Applications

• Consumer electronics requiring low-cost 8-bit control
• Industrial appliance logic controllers
• Simple interface modules using Microwire/SPI communication

Procurement Notes

Verify component authenticity due to obsolete status. Confirm package variant matches TFQFN/CSP specifications. Check RoHS compliance as some sources indicate non-compliance. Ensure design-in compatibility with existing firmware architecture before procurement.

Selection Notes

Select this part for cost-sensitive designs requiring 4KB code space. Compare against COP8SAA7SLB8 if only 1KB memory is sufficient. Verify thermal requirements against the 85°C junction limit. Consider pinout compatibility for direct replacements in legacy boards.

Part Context

Part of the COP8 family, widely used in embedded systems. Manufactured originally by National Semiconductor, now under Microchip Technology. Represents a mature technology node for simple control tasks.

Replacement Considerations

Public confirmed substitute: COP8SAA7SLB8 (1KB OTP variant). Verify pin compatibility and memory size sufficiency before substitution.

FAQ

What is the maximum operating frequency?

The internal oscillator supports a maximum speed of 10MHz.

Does it support external crystal oscillators?

The datasheet specifies an internal oscillator type; external crystal support is not explicitly documented in standard summaries.