Overview
The RM46L852CPGET from Texas Instruments is a high-performance microcontroller designed for safety-critical applications. It features a dual-CPU architecture in lockstep, ensuring high reliability and redundancy. The device is based on the ARM Cortex-R4F 32-bit RISC CPU, which provides an efficient 1.66 DMIPS/MHz and can operate up to 220 MHz, delivering up to 365 DMIPS. The microcontroller supports the little-endian format and includes integrated safety features such as CPU and memory Built-In Self-Test (BIST) logic, Error Correction Code (ECC) on flash and SRAM, and parity on peripheral memories. It is particularly suited for industrial safety applications, medical devices, and other real-time control systems requiring high performance and reliability.
Key Specifications
| Parameter | Specification |
|---|---|
| Core Architecture | ARM Cortex-R4F 32-bit RISC CPU |
| Operating Frequency | Up to 220 MHz |
| Integrated Flash | 1.25 MB with ECC |
| Integrated RAM | 192 KB with ECC |
| ADCs | Two 12-bit Multibuffered ADCs (up to 24 inputs) |
| Timer Modules | Two Next Generation High-End Timer (N2HET) modules |
| ePWM Modules | Seven Enhanced Pulse Width Modulator (ePWM) modules |
| eCAP Modules | Six Enhanced Capture (eCAP) modules |
| eQEP Modules | Two Enhanced Quadrature Encoder Pulse (eQEP) modules |
| Communication Interfaces | 10/100 Mbps Ethernet MAC, USB, CAN, I2C, SPI |
| Package | LQFP (144 pins), NFBGA (337 balls) |
| Supply Voltage | Core: 1.14 to 1.32 V, I/O: 3.0 to 3.6 V |
Key Features
- Dual CPUs in lockstep for enhanced safety and reliability
- CPU and memory BIST logic for self-testing
- ECC on flash and SRAM, parity on peripheral memories
- Two Next Generation High-End Timer (N2HET) modules with up to 44 I/O terminals
- Seven Enhanced Pulse Width Modulator (ePWM) modules with up to 14 outputs
- Six Enhanced Capture (eCAP) modules and two Enhanced Quadrature Encoder Pulse (eQEP) modules
- Two 12-bit Multibuffered Analog-to-Digital Converters (ADCs) supporting up to 24 inputs
- 10/100 Mbps Ethernet MAC, USB host and device controllers, CAN, I2C, and SPI interfaces
- Direct Memory Access (DMA) controller with 16 channels and 32 peripheral requests
- Error Signaling Module (ESM) for monitoring device errors
- Parameter Overlay Module (POM) for enhanced calibration capabilities
Applications
- Industrial safety applications (e.g., safe programmable logic controllers, power generation and distribution)
- Medical applications (e.g., ventilators, defibrillators, infusion and insulin pumps, robotic surgery)
- Industrial automation and control systems
- Turbines and windmills
- Elevators and escalators
- Radiation therapy equipment
Q & A
- What is the core architecture of the RM46L852CPGET?
The RM46L852CPGET is based on the ARM Cortex-R4F 32-bit RISC CPU.
- What is the maximum operating frequency of the RM46L852CPGET?
The device can operate up to 220 MHz.
- How much integrated flash and RAM does the RM46L852CPGET have?
The device has 1.25 MB of integrated flash and 192 KB of data RAM.
- What safety features are integrated into the RM46L852CPGET?
The device includes dual CPUs in lockstep, CPU and memory BIST logic, ECC on flash and SRAM, and parity on peripheral memories.
- What types of timer modules are available on the RM46L852CPGET?
The device features two Next Generation High-End Timer (N2HET) modules.
- What communication interfaces does the RM46L852CPGET support?
The device supports 10/100 Mbps Ethernet MAC, USB, CAN, I2C, and SPI interfaces.
- What is the purpose of the Error Signaling Module (ESM) in the RM46L852CPGET?
The ESM monitors all device errors and determines whether an interrupt or external error pin is triggered when a fault is detected.
- What is the role of the Parameter Overlay Module (POM) in the RM46L852CPGET?
The POM enhances calibration capabilities by rerouting flash accesses to internal memory or the EMIF, avoiding reprogramming steps for parameter updates in flash.
- What are some common applications of the RM46L852CPGET?
The device is used in industrial safety applications, medical devices, industrial automation, and other real-time control systems requiring high performance and reliability.
- What are the package options for the RM46L852CPGET?
The device is available in LQFP (144 pins) and NFBGA (337 balls) packages.
