MC9S08QE4CLCR

Microcontrollers Overview

The MC9S08QE4CLCR is a microcontroller from the NXP MC9S08QE8 series, featuring an 8-bit HCS08 CPU with up to 20 MHz operation. It includes 4 KB of user Flash and 256 bytes of RAM. The device supports multiple clock sources, including an internal clock source module with FLL and a low-power external oscillator. Key peripherals include a 12-bit ADC, two analog comparators, TPM modules, SCI, SPI, IIC, and RTC. It offers comprehensive system protection via watchdog, LVD, and illegal opcode/address detection.

Microcontrollers Feature Summary

• Integrated 8-bit HCS08 Central Processor Unit supporting up to 20 MHz operation across the industrial temperature range.
• On-chip memory comprising Flash for read/program/erase operations and Random-access memory with security circuitry.
• Multiple power-saving modes including Stop2, Stop3, and Wait modes with peripheral clock gating capabilities.
• Extensive peripheral set including 12-bit ADC, analog comparators, timer/PWM modules, and serial communication interfaces.

Microcontrollers Applications

• Industrial control systems requiring robust interrupt handling and system protection features.
• Battery-powered devices utilizing low-power stop modes and efficient voltage regulation.
• Sensor interface applications leveraging the 12-bit ADC and analog comparator modules.
• Communication nodes using SCI, SPI, or IIC interfaces for data exchange.

Microcontrollers Procurement Notes

Verify the specific ordering suffix 'CLCR' against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure compatibility with existing board layouts regarding pin assignments and thermal requirements. Cross-reference the part number with the latest addendum documents for any package migration changes, such as wire material updates, to guarantee mechanical and electrical integrity during procurement.

Microcontrollers Selection Notes

Select this component when an 8-bit architecture with integrated analog peripherals is required. Consider the MC9S08QE4 variant over the QE8 if the application demands reduced memory capacity (4 KB Flash, 256 Bytes RAM) while maintaining identical peripheral sets. Evaluate the available package options, including QFN, to match space constraints. Confirm that the operating voltage range and temperature specifications align with the target environment before finalizing the selection.

Microcontrollers Part Context

This part belongs to the MC9S08QE8 series, which shares core functionality but differs in memory size. The MC9S08QE4 specifically provides 4 KB of Flash and 256 bytes of RAM, compared to the 8 KB and 512 bytes found in the QE8. The series is designed for cost-sensitive applications needing reliable performance within the automotive-grade qualification standards established by Freescale Semiconductor.

Microcontrollers Replacement Considerations

Direct substitutes within the same series include the MC9S08QE8CLCR, which offers double the memory resources. Verify pin-to-pin compatibility and software compatibility when migrating between QE4 and QE8 variants. Check for any updated package addendums that might affect mechanical fit or thermal characteristics during replacement.

Microcontrollers FAQ

What is the difference in memory between the MC9S08QE4 and MC9S08QE8?

The MC9S08QE4 contains 4 KB of user Flash and 256 bytes of RAM, whereas the MC9S08QE8 provides 8 KB of Flash and 512 bytes of RAM. All other peripherals and features remain identical.

Does the MC9S08QE4 support background debug mode?

Yes, the device includes a single-wire background debug interface and an on-chip in-circuit emulator debug module with breakpoint capability for development and testing.

Can the analog comparators operate in low-power stop modes?

Yes, the two analog comparators are fully functional in Stop3 mode, allowing for continuous monitoring even when the main CPU clock is halted.