MC68334GCEH16

Microcontrollers Overview

The MC68334GCEH16 is a 32-bit microcontroller from the M683xx series, manufactured by NXP Semiconductors (formerly Freescale). It features a CPU32 core with no internal program memory (ROMless) and 1K x 8 bytes of data RAM. The device operates at a maximum clock frequency of 16 MHz within a voltage range of 3V to 5.5V. It is housed in a 132-pin PQFP package and supports interfaces including EBI/EMI and UART/USART. The component includes an 8-channel 8/10-bit ADC and is rated for industrial temperatures between -40°C and 85°C.

Microcontrollers Feature Summary

• CPU32 architecture with virtual memory implementation and table lookup instructions
• System Integration Module with programmable chip-select outputs and watchdog timer
• Queued Serial Module for enhanced serial communication capabilities
• External Bus Interface supporting memory expansion

Microcontrollers Applications

• Industrial control systems requiring modular peripheral integration
• Automotive applications utilizing AEC-Q100 qualified components
• Embedded systems needing external memory interfacing via EBI
• Communication devices using Queued Serial Module protocols

Microcontrollers Procurement Notes

Verify manufacturing source as NXP Semiconductors, noting the historical Freescale lineage. Confirm RoHS compliance status and REACH registration details prior to procurement. Check for moisture sensitivity level requirements during storage and handling. Ensure the specific suffix matches the required temperature grade and package variant. Validate end-of-life or obsolescence status through official distributor channels before finalizing orders.

Microcontrollers Selection Notes

Select this component when a ROMless 32-bit MCU with external bus support is required. Compare against MC68332 variants if internal RAM size or TPU channel count differs from project needs. Verify that the 16 MHz speed meets timing constraints for the target application. Ensure the 132-PQFP package fits the PCB layout constraints. Consider the absence of internal flash when designing bootloaders or external memory controllers.

Microcontrollers Part Context

This part belongs to the M683xx family of 32-bit modular microcontrollers. These devices are built from standard modules interfacing through a common intermodule bus. The family emphasizes high-performance data manipulation and powerful peripheral subsystems. The MC68334 variant specifically focuses on external memory expansion and serial communication flexibility without onboard program storage.

Microcontrollers Replacement Considerations

MC68334GCFC16: Similar 16MHz PQFP variant with different operating temperature range. MC68334GFC16: Commercial grade version with narrower temperature specifications.