MC68336ACFT20

Microcontrollers Overview

The MC68336ACFT20 is a 32-bit microcontroller from the Motorola ColdFire/68K family, manufactured by NXP USA Inc. It operates at a frequency of 20.97 MHz and is housed in a 160-pin plastic surface mount QFP package (Case 864A-03). The device supports an operating temperature range of -40 to +85 °C. Key hardware features include on-chip breakpoint hardware, opcode tracking, and a Multichannel Pulse Width Modulation (MCPWM) module. It provides multiple I/O ports including Port F with configurable data direction and pin assignment registers.

Microcontrollers Feature Summary

• Supports multimaster operation for complex system interconnects
• Includes on-chip breakpoint hardware and opcode tracking for debugging
• Features a Multichannel Pulse Width Modulation (MCPWM) module
• Provides configurable I/O ports with specific data latches and direction control

Microcontrollers Applications

• Embedded systems requiring 32-bit processing capabilities
• Industrial control applications utilizing PWM functions
• Automotive electronics within specified temperature ranges
• Network equipment involving serial communication protocols

Microcontrollers Procurement Notes

Verify the specific ordering suffix against official documentation to confirm temperature grade and package type. Ensure compatibility with existing board layouts regarding the 160-pin QFP dimensions. Confirm that the revision level matches design requirements, particularly regarding pin assignments for pins 1 and 160 which vary between revisions C and D/L. Cross-reference part numbers with current manufacturer lists as legacy components may have superseded variants.

Microcontrollers Selection Notes

Select this component when a 32-bit architecture with 20.97 MHz performance is required in a 160-pin form factor. Consider the MC68376 if onboard ROM is necessary instead of external memory interfaces. Evaluate thermal management needs for the -40 to +85 °C commercial grade. Verify peripheral requirements such as TPU channels and serial interfaces against the specific pinout availability for the ACFT variant.

Microcontrollers Part Context

This microcontroller belongs to the MC68336/376 series, designed for high-performance embedded applications. It utilizes the 68K instruction set architecture extended with ColdFire optimizations. The device integrates various timers, serial controllers, and general-purpose I/O. It serves as a central processing unit in systems demanding reliable real-time control and data processing capabilities.

Microcontrollers Replacement Considerations

Check for MC68336GCFT20 or MC68336AMFT20 for different temperature grades. The MC68376 series offers similar functionality but includes onboard ROM. Verify pin compatibility carefully, especially for revisions prior to D where pin 1 and 160 assignments differ.

Microcontrollers FAQ

How do pin assignments differ between MC68336 revisions?

In Revision C devices, Pin 1 is VSS and Pin 160 is VDD. In Revision D and later (F60K and Later Mask Sets), both pins are assigned as 'No Connect' to allow pin compatibility with the MC68376.

What is the function of the PORTF register?

PORTF is an internal data latch accessible at two locations. It can be read or written anytime. When configured as output, it drives the pin; reading returns the latched value.