RM46L850ZWTT

Microcontrollers Overview

The RM46L850ZWTT is a 32-bit RISC microcontroller from the Hercules RM4 family, utilizing dual ARM Cortex-R4F CPUs operating in lockstep for functional safety. It features 1.25MB of Flash with ECC and 192KB of RAM with ECC. The device supports a system clock up to 200MHz and includes two N2HET modules, seven ePWM modules, six eCAP modules, two eQEP modules, and two MibADC modules. Communication interfaces include EMAC, USB, three DCANs, three MibSPIs, two SPIs, one LIN, two SCIs, and one I2C. It is housed in a 337-ball NFBGA package.

Microcontrollers Feature Summary

• Dual-core CPU architecture running in lockstep with built-in self-test logic and error signaling module
• Integrated memory protection including ECC on flash and RAM, parity protection for peripheral memories, and DMA MPU
• Advanced timing peripherals including N2HET coprocessors, ePWM, eCAP, and eQEP modules for motor control
• Comprehensive communication suite featuring Ethernet MAC, USB host/device controllers, and multiple CAN/SPI/SCI interfaces

Microcontrollers Applications

• Industrial Safety Applications such as Safe Programmable Logic Controllers (PLCs) and Power Generation
• Medical Applications including Ventilators, Defibrillators, Infusion Pumps, and Robotic Surgery
• Motion Control Systems requiring high-performance real-time processing and precise encoder feedback

Microcontrollers Procurement Notes

Verify the specific ordering suffix ZWT corresponds to the 337-ball NFBGA package configuration required for your design. Confirm that the component meets the necessary functional safety certifications for your target application domain. Ensure compatibility with existing development tools and software libraries provided by Texas Instruments for the Hercules RM4 series.

Microcontrollers Selection Notes

Select this model when dual-core lockstep operation is mandatory for safety-critical systems. Choose this variant over the RM46L450 if 1.25MB of Flash and 192KB of RAM are required. Consider the 337-ball NFBGA package constraints regarding PCB layout and thermal management compared to the 144-pin QFP option.

Microcontrollers Part Context

This component belongs to the Hercules RM46Lx50 family of microcontrollers designed for safety applications. It shares architectural similarities with other devices in the family but offers specific memory sizes and pin counts. The ZWT suffix denotes the specific physical package type used in this part number.

Microcontrollers Replacement Considerations

Direct substitutes within the same package include the RM46L850PGET, which utilizes a 144-pin LQFP package instead of the 337-ball BGA. Verify pinout compatibility and mechanical fit before substitution.