RM46L840
- High-Performance Microcontroller for Safety-Critical Applications
- Dual CPUs Running in Lockstep
- ECC on Flash and RAM Interfaces
- Built-In Self-Test (BIST) for CPU and On-chip RAMs
- Error Signaling Module With Error Pin
- Voltage and Clock Monitoring
- ARM Cortex-R4F 32-Bit RISC CPU
- 1.66 DMIPS/MHz With 8-Stage Pipeline
- FPU With Single- and Double-Precision
- 12-Region Memory Protection Unit (MPU)
- Open Architecture With Third-Party Support
- Operating Conditions
- Up to 200-MHz System Clock
- Core Supply Voltage (VCC): 1.14 to 1.32 V
- I/O Supply Voltage (VCCIO): 3.0 to 3.6 V
- Integrated Memory
- 1.25MB of Program Flash With ECC (RM46L840)
- 1MB of Program Flash With ECC (RM46L440)
- 192KB of RAM With ECC (RM46L840)
- 128KB of RAM With ECC (RM46L440)
- 64KB of Flash for Emulated EEPROM With ECC
- 16-Bit External Memory Interface (EMIF)
- Common Platform Architecture
- Consistent Memory Map Across Family
- Real-Time Interrupt (RTI) Timer (OS Timer)
- 128-Channel Vectored Interrupt Module (VIM)
- 2-Channel Cyclic Redundancy Checker (CRC)
- Direct Memory Access (DMA) Controller
- 16 Channels and 32 Peripheral Requests
- Parity Protection for Control Packet RAM
- DMA Accesses Protected by Dedicated MPU
- Frequency-Modulated Phase-Locked Loop (FMPLL) With Built-In Slip Detector
- Separate Nonmodulating PLL
- IEEE 1149.1 JTAG, Boundary Scan and ARM CoreSight Components
- Advanced JTAG Security Module (AJSM)
- Calibration Capabilities
- Parameter Overlay Module (POM)
- 16 General-Purpose Input/Output (GPIO) Pins Capable of Generating Interrupts
- Enhanced Timing Peripherals for Motor Control
- 7 Enhanced Pulse Width Modulator (ePWM) Modules
- 6 Enhanced Capture (eCAP) Modules
- 2 Enhanced Quadrature Encoder Pulse (eQEP) Modules
- Two Next Generation High-End Timer (N2HET) Modules
- N2HET1: 32 Programmable Channels
- N2HET2: 18 Programmable Channels
- 160-Word Instruction RAM Each With Parity Protection
- Each N2HET Includes Hardware Angle Generator
- Dedicated High-End Timer Transfer Unit (HTU) for Each N2HET
- Two 12-Bit Multibuffered Analog-to-Digital Converter (MibADC) Modules
- ADC1: 24 Channels
- ADC2: 16 Channels Shared With ADC1
- 64 Result Buffers Each With Parity Protection
- Multiple Communication Interfaces
- 10/100 Mbps Ethernet MAC (EMAC)
- IEEE 802.3 Compliant (3.3-V I/O Only)
- Supports MII, RMII, and MDIO
- Three CAN Controllers (DCANs)
- 64 Mailboxes Each With Parity Protection
- Compliant to CAN Protocol Version 2.0A and 2.0B
- Inter-Integrated Circuit (I2C)
- Three Multibuffered Serial Peripheral Interface (MibSPI) Modules
- 128 Words Each With Parity Protection
- 8 Transfer Groups
- Up to Two Standard Serial Peripheral Interface (SPI) Modules
- Two UART (SCI) Interfaces, One With Local Interconnect Network (LIN 2.1) Interface Support
- 10/100 Mbps Ethernet MAC (EMAC)
- Packages
- 144-Pin Quad Flatpack (PGE) [Green]
- 337-Ball Grid Array (ZWT) [Green]
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The RM46Lx40 device is a high-performance microcontroller family for safety systems. The safety architecture includes dual CPUs in lockstep, CPU and memory BIST logic, ECC on both the flash and the data SRAM, parity on peripheral memories, and loopback capability on peripheral I/Os.
The RM46Lx40 device integrates the ARM Cortex-R4F floating-point CPU which offers an efficient 1.66 DMIPS/MHz, and can run up to 200 MHz providing up to 332 DMIPS. The device supports the little-endian [LE] format.
The RM46L840 device has 1.25MB of integrated flash and 192KB of data RAM with single-bit error correction and double-bit error detection. The RM46L440 device has 1MB of integrated flash and 128KB of data RAM with single-bit error correction and double-bit error detection. The flash memory on this device is a nonvolatile, electrically erasable and programmable memory, implemented with a 64-bit-wide data bus interface. The flash operates on a 3.3-V supply input (same level as I/O supply) for all read, program, and erase operations. When in pipeline mode, the flash operates with a system clock frequency of up to 200 MHz. The SRAM supports single-cycle read and write accesses in byte, halfword, word, and double-word modes throughout the supported frequency range.
The RM46Lx40 device features peripherals for real-time control-based applications, including two Next Generation High-End Timer (N2HET) timing coprocessors with up to 44 I/O terminals, seven Enhanced Pulse Width Modulator (ePWM) modules with up to 14 outputs, six Enhanced Capture (eCAP) modules, two Enhanced Quadrature Encoder Pulse (eQEP) modules, and two 12-bit Analog-to-Digital Converters (ADCs) supporting up to 24 inputs.
The N2HET is an advanced intelligent timer that provides sophisticated timing functions for real-time applications. The timer is software-controlled, using a reduced instruction set, with a specialized timer micromachine and an attached I/O port. The N2HET can be used for pulse-width-modulated outputs, capture or compare inputs, or general-purpose I/O (GIO). The N2HET is especially well suited for applications requiring multiple sensor information and drive actuators with complex and accurate time pulses. A High-End Timer Transfer Unit (HTU) can perform DMA-type transactions to transfer N2HET data to or from main memory. A Memory Protection Unit (MPU) is built into the HTU.
The ePWM module can generate complex pulse width waveforms with minimal CPU overhead or intervention. The ePWM is easy to use and it supports both high-side and low-side PWM and deadband generation. With integrated trip zone protection and synchronization with the on-chip MibADC, the ePWM module is ideal for digital motor control applications.
The eCAP module is essential in systems where the accurately timed capture of external events is important. The eCAP can also be used to monitor the ePWM outputs or for simple PWM generation when the eCAP is not needed for capture applications.
The eQEP module is used for direct interface with a linear or rotary incremental encoder to get position, direction, and speed information from a rotating machine as used in high-performance motion and position-control systems.
The device has two 12-bit-resolution MibADCs with 24 total inputs and 64 words of parity-protected buffer RAM each. The MibADC channels can be converted individually or can be grouped by software for sequential conversion sequences. Sixteen inputs are shared between the two MibADCs. Each MibADC supports three separate groupings of channels. Each group can be converted once when triggered or configured for continuous conversion mode. The MibADC has a 10-bit mode for use when compatibility with older devices or faster conversion time is desired. MibADC1 also supports the use of external analog multiplexers.
The device has multiple communication interfaces: three MibSPIs, two SPIs, one LIN, one SCI, three DCANs, one I2C, and one Ethernet. The SPI provides a convenient method of serial high-speed communications between similar shift-register type devices. The LIN supports the Local Interconnect standard 2.0 and can be used as a UART in full-duplex mode using the standard Non-Return-to-Zero (NRZ) format. The DCAN supports the CAN 2.0 (A and B) protocol standard and uses a serial, multimaster communication protocol that efficiently supports distributed real-time control with robust communication rates of up to 1 Mbps. The DCAN is ideal for systems operating in noisy and harsh environments (for example, automotive and industrial fields) that require reliable serial communication or multiplexed wiring. The Ethernet module supports MII, RMII, and MDIO interfaces.
The I2C module is a multimaster communication module providing an interface between the microcontroller and an I2C-compatible device through the I2C serial bus. The I2C supports speeds of 100 and 400 Kbps.
A Frequency-Modulated Phase-Locked Loop (FMPLL) clock module is used to multiply the external frequency reference to a higher frequency for internal use. The Global Clock Module (GCM) manages the mapping between the available clock sources and the device clock domains.
The device also has an External Clock Prescaler (ECP) module that when enabled, outputs a continuous external clock on the ECLK terminal. The ECLK frequency is a user-programmable ratio of the peripheral interface clock (VCLK) frequency. This low-frequency output can be monitored externally as an indicator of the device operating frequency.
The Direct Memory Access (DMA) controller has 16 channels, 32 peripheral requests, and parity protection on its memory. An MPU is built into the DMA to protect memory against erroneous transfers.
The Error Signaling Module (ESM) monitors all device errors and determines whether an interrupt or external error pin (ball) is triggered when a fault is detected. The nERROR terminal can be monitored externally as an indicator of a fault condition in the microcontroller.
The External Memory Interface (EMIF) provides a memory extension to asynchronous and synchronous memories or other slave devices.
A Parameter Overlay Module (POM) enhances the calibration capabilities of application code. The POM can reroute flash accesses to internal memory or to the EMIF, thus avoiding the reprogramming steps necessary for parameter updates in flash.
With integrated safety features and a wide choice of communication and control peripherals, the RM46Lx40 device is an ideal solution for high-performance real-time control applications with safety-critical
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Hercules RM46L840 is certified by TÜV SÜD to be capable of achieving IEC 61508 SIL 3 helping to make it easier to develop functional safety applications. Download certificate now.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
TMDSEMU200-U — XDS200 USB Debug Probe
The XDS200 is a debug probe (emulator) used for debugging TI embedded devices. The XDS200 features a balance of low cost with good performance as compared to the low cost XDS110 and the high performance XDS560v2. It supports a wide variety of standards (IEEE1149.1, IEEE1149.7, SWD) in a (...)
TMDSEMU560V2STM-U — XDS560™ software v2 system trace USB debug probe
The XDS560v2 is the highest performance of the XDS560™ family of debug probes and supports both the traditional JTAG standard (IEEE1149.1) and cJTAG (IEEE1149.7). Note that it does not support serial wire debug (SWD).
All XDS debug probes support Core and System Trace in all ARM and DSP processors (...)
TMDSEMU560V2STM-UE — XDS560v2 System Trace USB & Ethernet Debug Probe
The XDS560v2 is the highest performance of the XDS560™ family of debug probes and supports both the traditional JTAG standard (IEEE1149.1) and cJTAG (IEEE1149.7). Note that it does not support serial wire debug (SWD).
All XDS debug probes support Core and System Trace in all ARM and DSP processors (...)
LAUNCHXL2-RM46 — Hercules RM46x LaunchPad Development Kit
The Hercules™ RM46x LaunchPad™ Development Kit is an inexpensive evaluation platform designed to help you get started quickly in evaluating and developing with the Hercules microcontroller platform. The LaunchPad Development Kit is based on the IEC 61508 SIL 3 certified RM46L852, which is a (...)
TMDXRM46HDK — Hercules RM46x Development Kit
The Hercules™ RM46x Development Kit is based on the IEC 61508 SIL 3 certified RM46L852 and is ideal for getting started on development with the RM46 series of the Hercules RM family of microcontrollers. The development board features RJ45 10/100 Ethernet, USB-A Host, and USB-B Device Interfaces (...)
SAFETI_DIAG_LIB — Hercules SafeTI Diagnostic Library (v2.4.0)
The Hercules SafeTI™ Diagnostic Library is a collection of software functions and response handlers for various safety features of the Hercules Safety MCUs. The Hercules SafeTI Diagnostic Library runs in the context of the caller's protection environment and all responses are handled in the (...)
Supported products & hardware
Products
Arm Cortex-R MCUs
Software
IDE, configuration, compiler or debugger
CCSTUDIO — Code Composer Studio™ integrated development environment (IDE)
Code Composer Studio is an integrated development environment (IDE) for TI's microcontrollers and processors. It comprises a suite of tools used to develop and debug embedded applications. Code Composer Studio is available for download across Windows®, Linux® and macOS® desktops. It can also (...)
Supported products & hardware
This design resource supports most products in these categories.
Check the product details page to verify support.
-
parametric-filter MSP430 microcontrollers -
parametric-filter C2000 real-time microcontrollers -
parametric-filter Arm-based microcontrollers -
parametric-filter Digital signal processors (DSPs) -
parametric-filter Arm-based processors -
parametric-filter Signal conditioners -
parametric-filter mmWave radar sensors -
parametric-filter Zigbee products -
parametric-filter Wi-Fi products -
parametric-filter Thread products -
parametric-filter Other wireless technologies -
parametric-filter Sub-1 GHz products -
parametric-filter Multi-protocol products -
parametric-filter Bluetooth products -
parametric-filter Digital power isolated controllers
HALCOGEN — HAL Code Generator Tool - TMS570 (v4.07.01)
HALCoGen allows users to generate hardware abstraction layer device drivers for Hercules™ microcontrollers. HALCoGen provides a graphical user interface that allows the user to configure peripherals, interrupts, clocks, and other Hercules microcontroller parameters. Once the Hercules device (...)
Supported products & hardware
Products
Arm Cortex-M4 MCUs
Arm Cortex-R MCUs
Software
IDE, configuration, compiler or debugger
HET_IDE — High End Timer (HET)
SAFETI-HALCOGEN-CSP — SafeTI Compliance Support Package for HALCoGen (Hardware Abstraction Layer Code Generator)
Prerequisites:
The below items are (...)
SAFETI-HERCULES-DIAG-LIB-CSP — SafeTI Compliance Support Package for Hercules Diagnostic Library
SAFETI_CQKIT — Safety compiler qualification kit
The Safety Compiler Qualification Kit:
- is free of charge for TI customers
- does (...)
UNIFLASH — UniFlash for most TI microcontrollers (MCUs) and mmWave sensors
UniFlash is a software tool for programming on-chip flash on TI microcontrollers and wireless connectivity devices and on-board flash for TI processors. UniFlash provides both graphical and command-line interfaces.
UniFlash can be run from the cloud on the TI Developer Zone or downloaded and used (...)
Supported products & hardware
Products
C2000 real-time microcontrollers
Arm-based processors
Industrial mmWave radar sensors
Automotive mmWave radar sensors
MSP430 microcontrollers
Wi-Fi products
Arm Cortex-M4 MCUs
Arm Cortex-M0+ MCUs
Arm Cortex-R MCUs
Low-power 2.4-GHz products
Automotive wireless connectivity products
Sub-1 GHz wireless MCUs
HERCULES-F021FLASHAPI — F021 Flash API - Software (v02.01.01)
The F021 Flash Application Programming Interface (API) provides a software library of functions to program, erase, and verify F021 on-chip Flash memory. These functions must be used when creating Flash bootloaders or other programming utilities for F021 Flash based microcontrollers. The Hercules (...)
Supported products & hardware
Products
Arm Cortex-R MCUs
Software
Software programming tool
IDE, configuration, compiler or debugger
HERCULES_SAFETY_MCU_DEMOS — Hercules Software Kit (v4.0.0)
Supported products & hardware
Products
Arm Cortex-M4 MCUs
Arm Cortex-R MCUs
NHET-ASSEMBLER — TMS570 NHET Assembler Software (v2.0.1)
TI's Enhanced High-End Timer (NHET) module provides sophisticated timing functions for real-time control applications.
The NHET Assembler translates programs written in the NHET assembly language into multiple output formats for use in code-generation tools such as TI's Code Composer Studio.
Supported products & hardware
Products
Arm Cortex-M4 MCUs
Arm Cortex-R MCUs
Software
IDE, configuration, compiler or debugger
NOWECC — TMS570 nowECC v2.22.00
Supported products & hardware
Products
Arm Cortex-M4 MCUs
Arm Cortex-R MCUs
WHIS-3P-OPENRTOS — WITTENSTEIN OPENRTOS commercial license for FreeRTOS
WHIS-3P-SAFERTOS — WITTENSTEIN SAFERTOS Pre-certified safety RTOS
FMZPLL_CALCULATOR — FMzPLL Configuration Tool
- OSCIN speed
- multiplier setting
- divider settings
- frequency modulation settings
- PLL/OSC fail options
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
LQFP (PGE) | 144 | Ultra Librarian |
NFBGA (ZWT) | 337 | Ultra Librarian |
Ordering & quality
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- REACH
- Device marking
- Lead finish/Ball material
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- Material content
- Qualification summary
- Ongoing reliability monitoring
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Support & training
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