Texas Instruments RM46L440CPGET

Overview

RM46L440CPGET from Texas Instruments is a safety-certified 32-bit ARM Cortex-R4F microcontroller for industrial and medical safety-critical systems. It delivers 332 DMIPS at 200 MHz, integrates 1 MB flash with ECC, 128 KB RAM with ECC, dual-lockstep CPUs, and supports IEEE 802.3 Ethernet, three CAN 2.0B controllers, and dual 12-bit MibADCs with 24 total channels - deployed in ventilators, safe PLCs, and radiation therapy systems.

For engineers reviewing the RM46L440CPGET datasheet, RM46L440CPGET pinout, RM46L440CPGET application, or RM46L440CPGET equivalent, key selection considerations include functional safety architecture (dual-CPU lockstep + BIST + ECC), real-time peripheral timing precision (N2HET1/N2HET2 with 44 I/O terminals), deterministic motor control capability (7 ePWM, 6 eCAP, 2 eQEP), and 144-pin LQFP package compatibility with industrial PCB layouts.

Technical Context

The RM46L440CPGET implements a dual-core lockstep safety architecture where both ARM Cortex-R4F CPUs execute identical instructions and compare results in real time, triggering error signaling via the Error Signaling Module (ESM) and nERROR pin upon mismatch. Memory integrity is enforced by single-bit error correction and double-bit error detection (SECDED) on flash and SRAM, plus parity protection on peripheral memories including MibADC buffers and HTU transfer RAM.

Its real-time control subsystem centers on two Next Generation High-End Timers (N2HET1: 32 channels; N2HET2: 18 channels), each with dedicated hardware angle generator and High-End Timer Transfer Unit (HTU) for DMA-like transfers to main memory under MPU-protected access. Peripheral synchronization is enabled via ePWM-to-MibADC trigger coupling and RTI timer-based OS scheduling.

Key Specifications

Pinout & Package

RM46L440CPGET is housed in a 144-pin LQFP (PGE) package with exposed thermal pad. Pin functions are multiplexed across GPIO, analog, timer, communication, and power domains; default configurations follow TI's Hercules™ safety MCU pin mapping. All I/O pins support programmable pullup/pulldown and GPIO interrupt generation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar safety microcontroller applications.

Compared with RM46L440CPGET, RM46L840PGE offers expanded memory for deeper diagnostic logging without changing pinout or safety certification effort, while RM48L952ZWT provides higher compute bandwidth and USB but requires BGA rework and lacks EMIF - making RM46L440CPGET optimal for cost-sensitive, LQFP-based industrial safety nodes.

Availability

RM46L440CPGET is available at Aetrix Electronics and suitable for industrial automation, medical device manufacturing, and power generation systems requiring stable component supply with long-term lifecycle assurance and traceable sourcing.

Supply support for RM46L440CPGET includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with decades of automotive and industrial safety IC experience.

The RM46L440CPGET belongs to TI's Hercules™ ARM-based safety microcontroller family, designed specifically for IEC 61508 SIL-3 and ISO 26262 ASIL-D applications requiring certified fault detection, lockstep execution, and memory protection.

FAQ

What safety certifications does the RM46L440CPGET support?

The RM46L440CPGET is architected to support IEC 61508 SIL-3 and ISO 26262 ASIL-D compliance. Its dual-lockstep Cortex-R4F CPUs, on-chip BIST, ECC-protected flash and RAM, parity-protected peripheral memories, and ESM-driven error signaling provide the foundational hardware mechanisms required for certified safety applications. Full certification requires integration into a validated system-level safety case.

Does the RM46L440CPGET include built-in Ethernet MAC functionality?

Yes, the RM46L440CPGET integrates a 10/100 Mbps Ethernet Media Access Controller (EMAC) compliant with IEEE 802.3. It supports MII, RMII, and MDIO interfaces, enabling direct connection to PHY devices without external glue logic - essential for time-sensitive industrial networking and medical telemetry applications.

How many analog input channels does the RM46L440CPGET support?

The RM46L440CPGET features two 12-bit Multibuffered Analog-to-Digital Converters (MibADC1 and MibADC2), providing up to 24 total analog input channels. Sixteen channels are shared between the two ADCs, with MibADC1 offering 24-channel capability and MibADC2 supporting 16 channels - all buffered in 64-word parity-protected RAM per module.

What is the maximum operating frequency of the RM46L440CPGET?

The RM46L440CPGET operates at up to 200 MHz system clock frequency, delivering 332 DMIPS of computational performance. This frequency is sustained across its full industrial temperature range (–40°C to +105°C) with core supply (VCC) regulated between 1.14 V and 1.32 V and I/O supply (VCCIO) between 3.0 V and 3.6 V.

Is the RM46L440CPGET pin-compatible with other devices in the RM46Lx40 family?

Yes, the RM46L440CPGET in the 144-pin LQFP (PGE) package shares identical pinout and signal mapping with RM46L840PGE and RM44L520PGE. This allows direct hardware reuse across memory variants while preserving PCB layout, debug infrastructure, and peripheral interconnect design.