SPNS180B September   2012  – June 2015 RM42L432

PRODUCTION DATA.  

  1. 1Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagram
  2. 2Revision History
  3. 3Device Comparison
  4. 4Terminal Configuration and Functions
    1. 4.1 PZ QFP Package Pinout (100-Pin)
    2. 4.2 Terminal Functions
      1. 4.2.1  High-End Timer (N2HET)
      2. 4.2.2  Enhanced Quadrature Encoder Pulse Modules (eQEP)
      3. 4.2.3  General-Purpose Input/Output (GPIO)
      4. 4.2.4  Controller Area Network Interface Modules (DCAN1, DCAN2)
      5. 4.2.5  Multibuffered Serial Peripheral Interface (MibSPI1)
      6. 4.2.6  Standard Serial Peripheral Interface (SPI2)
      7. 4.2.7  Local Interconnect Network Controller (LIN)
      8. 4.2.8  Multibuffered Analog-to-Digital Converter (MibADC)
      9. 4.2.9  System Module
      10. 4.2.10 Error Signaling Module (ESM)
      11. 4.2.11 Main Oscillator
      12. 4.2.12 Test/Debug Interface
      13. 4.2.13 Flash
      14. 4.2.14 Core Supply
      15. 4.2.15 I/O Supply
      16. 4.2.16 Core and I/O Supply Ground Reference
    3. 4.3 Output Multiplexing and Control
      1. 4.3.1 Notes on Output Multiplexing
      2. 4.3.2 General Rules for Multiplexing Control Registers
    4. 4.4 Special Multiplexed Options
      1. 4.4.1 Filtering for eQEP Inputs
        1. 4.4.1.1 eQEPA Input
        2. 4.4.1.2 eQEPB Input
        3. 4.4.1.3 eQEPI Input
        4. 4.4.1.4 eQEPS Input
      2. 4.4.2 N2HET PIN_nDISABLE Input Port
  5. 5Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Power-On Hours (POH)
    4. 5.4  Recommended Operating Conditions
    5. 5.5  Switching Characteristics Over Recommended Operating Conditions for Clock Domains
    6. 5.6  Wait States Required
    7. 5.7  Power Consumption
    8. 5.8  Thermal Resistance Characteristics for PZ
    9. 5.9  Input/Output Electrical Characteristics
    10. 5.10 Output Buffer Drive Strengths
    11. 5.11 Input Timings
    12. 5.12 Output Timings
  6. 6System Information and Electrical Specifications
    1. 6.1  Voltage Monitor Characteristics
      1. 6.1.1 Important Considerations
      2. 6.1.2 Voltage Monitor Operation
      3. 6.1.3 Supply Filtering
    2. 6.2  Power Sequencing and Power-On Reset
      1. 6.2.1 Power-Up Sequence
      2. 6.2.2 Power-Down Sequence
      3. 6.2.3 Power-On Reset: nPORRST
        1. 6.2.3.1 nPORRST Electrical and Timing Requirements
    3. 6.3  Warm Reset (nRST)
      1. 6.3.1 Causes of Warm Reset
      2. 6.3.2 nRST Timing Requirements
    4. 6.4  ARM Cortex-R4 CPU Information
      1. 6.4.1 Summary of ARM Cortex-R4 CPU Features
      2. 6.4.2 ARM Cortex-R4 CPU Features Enabled by Software
      3. 6.4.3 Dual Core Implementation
      4. 6.4.4 Duplicate clock tree after GCLK
      5. 6.4.5 ARM Cortex-R4 CPU Compare Module (CCM) for Safety
      6. 6.4.6 CPU Self-Test
        1. 6.4.6.1 Application Sequence for CPU Self-Test
        2. 6.4.6.2 CPU Self-Test Clock Configuration
        3. 6.4.6.3 CPU Self-Test Coverage
    5. 6.5  Clocks
      1. 6.5.1 Clock Sources
        1. 6.5.1.1 Main Oscillator
          1. 6.5.1.1.1 Timing Requirements for Main Oscillator
        2. 6.5.1.2 Low-Power Oscillator
          1. 6.5.1.2.1 Features
          2. 6.5.1.2.2 LPO Electrical and Timing Specifications
        3. 6.5.1.3 Phase Locked Loop (PLL) Clock Modules
          1. 6.5.1.3.1 Block Diagram
          2. 6.5.1.3.2 PLL Timing Specifications
      2. 6.5.2 Clock Domains
        1. 6.5.2.1 Clock Domain Descriptions
        2. 6.5.2.2 Mapping of Clock Domains to Device Modules
      3. 6.5.3 Clock Test Mode
    6. 6.6  Clock Monitoring
      1. 6.6.1 Clock Monitor Timings
      2. 6.6.2 External Clock (ECLK) Output Functionality
      3. 6.6.3 Dual Clock Comparator
        1. 6.6.3.1 Features
        2. 6.6.3.2 Mapping of DCC Clock Source Inputs
    7. 6.7  Glitch Filters
    8. 6.8  Device Memory Map
      1. 6.8.1 Memory Map Diagram
      2. 6.8.2 Memory Map Table
      3. 6.8.3 Master/Slave Access Privileges
    9. 6.9  Flash Memory
      1. 6.9.1 Flash Memory Configuration
      2. 6.9.2 Main Features of Flash Module
      3. 6.9.3 ECC Protection for Flash Accesses
      4. 6.9.4 Flash Access Speeds
    10. 6.10 Flash Program and Erase Timings for Program Flash
    11. 6.11 Flash Program and Erase Timings for Data Flash
    12. 6.12 Tightly Coupled RAM Interface Module
      1. 6.12.1 Features
      2. 6.12.2 TCRAMW ECC Support
    13. 6.13 Parity Protection for Accesses to peripheral RAMs
    14. 6.14 On-Chip SRAM Initialization and Testing
      1. 6.14.1 On-Chip SRAM Self-Test Using PBIST
        1. 6.14.1.1 Features
        2. 6.14.1.2 PBIST RAM Groups
      2. 6.14.2 On-Chip SRAM Auto Initialization
    15. 6.15 Vectored Interrupt Manager
      1. 6.15.1 VIM Features
      2. 6.15.2 Interrupt Request Assignments
    16. 6.16 Real-Time Interrupt Module
      1. 6.16.1 Features
      2. 6.16.2 Block Diagrams
      3. 6.16.3 Clock Source Options
    17. 6.17 Error Signaling Module
      1. 6.17.1 Features
      2. 6.17.2 ESM Channel Assignments
    18. 6.18 Reset / Abort / Error Sources
    19. 6.19 Digital Windowed Watchdog
    20. 6.20 Debug Subsystem
      1. 6.20.1 Block Diagram
      2. 6.20.2 Debug Components Memory Map
      3. 6.20.3 JTAG Identification Code
      4. 6.20.4 Debug ROM
      5. 6.20.5 JTAG Scan Interface Timings
      6. 6.20.6 Advanced JTAG Security Module
      7. 6.20.7 Boundary Scan Chain
  7. 7Peripheral Information and Electrical Specifications
    1. 7.1 Peripheral Legend
    2. 7.2 Multibuffered 12-Bit Analog-to-Digital Converter
      1. 7.2.1 Features
      2. 7.2.2 Event Trigger Options
        1. 7.2.2.1 MIBADC Event Trigger Hookup
      3. 7.2.3 ADC Electrical and Timing Specifications
      4. 7.2.4 Performance (Accuracy) Specifications
        1. 7.2.4.1 MibADC Nonlinearity Errors
        2. 7.2.4.2 MibADC Total Error
    3. 7.3 General-Purpose Input/Output
      1. 7.3.1 Features
    4. 7.4 Enhanced High-End Timer (N2HET)
      1. 7.4.1 Features
      2. 7.4.2 N2HET RAM Organization
      3. 7.4.3 Input Timing Specifications
      4. 7.4.4 N2HET Checking
        1. 7.4.4.1 Output Monitoring using Dual Clock Comparator (DCC)
      5. 7.4.5 Disabling N2HET Outputs
      6. 7.4.6 High-End Timer Transfer Unit (N2HET)
        1. 7.4.6.1 Features
        2. 7.4.6.2 Trigger Connections
    5. 7.5 Controller Area Network (DCAN)
      1. 7.5.1 Features
      2. 7.5.2 Electrical and Timing Specifications
    6. 7.6 Local Interconnect Network Interface (LIN)
      1. 7.6.1 LIN Features
    7. 7.7 Multibuffered / Standard Serial Peripheral Interface
      1. 7.7.1 Features
      2. 7.7.2 MibSPI Transmit and Receive RAM Organization
      3. 7.7.3 MibSPI Transmit Trigger Events
        1. 7.7.3.1 MIBSPI1 Event Trigger Hookup
      4. 7.7.4 MibSPI/SPI Master Mode I/O Timing Specifications
      5. 7.7.5 SPI Slave Mode I/O Timings
    8. 7.8 Enhanced Quadrature Encoder (eQEP)
      1. 7.8.1 Clock Enable Control for eQEPx Modules
      2. 7.8.2 Using eQEPx Phase Error
      3. 7.8.3 Input Connections to eQEPx Modules
      4. 7.8.4 Enhanced Quadrature Encoder Pulse (eQEPx) Timing
  8. 8Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 Getting Started
      2. 8.1.2 Device Nomenclature
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation from Texas Instruments
    3. 8.3 Community Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
    7. 8.7 Device Identification Code Register
    8. 8.8 Die Identification Registers
    9. 8.9 Module Certifications
      1. 8.9.1 DCAN Certification
      2. 8.9.2 LIN Certifications
        1. 8.9.2.1 LIN Master Mode
        2. 8.9.2.2 LIN Slave Mode - Fixed Baud Rate
        3. 8.9.2.3 LIN Slave Mode - Adaptive Baud Rate
  9. 9Mechanical Packaging and Orderable Addendum
    1. 9.1 Packaging Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • PZ|100
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Device Overview

1.1 Features

  • High-Performance Microcontroller for Safety-Critical Applications
    • Dual CPUs Running in Lockstep
    • ECC on Flash and RAM Interfaces
    • Built-In Self-Test for CPU and On-Chip RAMs
    • Error Signaling Module With Error Pin
    • Voltage and Clock Monitoring
  • ARM®Cortex®-R4 32-Bit RISC CPU
    • Efficient 1.66 DMIPS/MHz With 8-Stage Pipeline
    • 8-Region Memory Protection Unit (MPU)
    • Open Architecture With Third-Party Support
  • Operating Conditions
    • 100-MHz System Clock
    • Core Supply Voltage (VCC): 1.2-V Nominal
    • I/O Supply Voltage (VCCIO): 3.3-V Nominal
    • ADC Supply Voltage (VCCAD): 3.3-V Nominal
  • Integrated Memory
    • 384KB of Program Flash With ECC
    • 32KB of RAM With ECC
    • 16KB of Flash for Emulated EEPROM With ECC
  • Hercules™ Common Platform Architecture
    • Consistent Memory Map Across Family
    • Real-Time Interrupt (RTI) Timer (OS Timer)
    • 96-Channel Vectored Interrupt Module (VIM)
    • 2-Channel Cyclic Redundancy Checker (CRC)
  • Frequency-Modulated Phase-Locked Loop (FMPLL) With Built-In Slip Detector
  • IEEE 1149.1 JTAG Boundary Scan and ARM CoreSight™ Components
  • Advanced JTAG Security Module (AJSM)
  • Multiple Communication Interfaces
    • Two CAN Controllers (DCANs)
      • DCAN1 - 32 Mailboxes With Parity Protection
      • DCAN2 - 16 Mailboxes With Parity Protection
      • Compliant to CAN Protocol Version 2.0B
    • Multibuffered Serial Peripheral Interface (MibSPI) Module
      • 128 Words With Parity Protection
    • Two Standard Serial Peripheral Interface (SPI) Modules
    • UART (SCI) Interface With Local Interconnect Network (LIN 2.1) Interface Support
  • Next Generation High-End Timer (N2HET) Module
    • Up to 19 Programmable Pins
    • 128-Word Instruction RAM With Parity Protection
    • Includes Hardware Angle Generator
    • Dedicated High-End Timer Transfer Unit (HTU) With MPU
  • Enhanced Quadrature Encoder Pulse (eQEP) Module
    • Motor Position Encoder Interface
  • 12-Bit Multibuffered Analog-to-Digital Converter (ADC) Module
    • 16 Channels
    • 64 Result Buffers With Parity Protection
  • Up to 45 General-Purpose Input/Output (GPIO) Pins
    • 8 Dedicated Interrupt-Capable GPIO Pins
  • Package
    • 100-Pin Quad Flatpack (PZ) [Green]

1.2 Applications

  • Industrial Safety Applications
    • Industrial Automation
    • Safe Programmable Logic Controllers (PLCs)
    • Power Generation and Distribution
    • Turbines and Windmills
    • Elevators and Escalators
  • Medical Applications
    • Ventilators
    • Defibrillators
    • Infusion and Insulin Pumps
    • Radiation Therapy
    • Robotic Surgery

1.3 Description

The RM42L432 device is a high-performance microcontroller 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 RM42L432 device integrates the ARM Cortex-R4 CPU. The CPU offers an efficient 1.66 DMIPS/MHz, and has configurations that can run up to 100 MHz, providing up to 166 DMIPS. The device operates in little-endian (LE) mode.

The RM42L432 device has 384KB of integrated flash and 32KB of data RAM. Both the flash and RAM have 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 (the 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 100 MHz. The SRAM supports single-cycle read and write accesses in byte, halfword, word, and double-word modes throughout the supported frequency range.

The RM42L432 device features peripherals for real-time control-based applications, including a Next Generation High-End Timer (N2HET) timing coprocessor with up to 19 I/O terminals and a 12-bit Analog-to-Digital Converter (ADC) supporting 16 inputs in the 100-pin package.

The N2HET is an advanced intelligent timer that provides sophisticated timing functions for real-time applications. The timer is software-controlled, using a small 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 GPIO. 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 Enhanced Quadrature Encoder Pulse (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 a 12-bit-resolution MibADC with 16 channels and 64 words of parity-protected buffer RAM. The MibADC channels can be converted individually or can be grouped by software for sequential conversion sequences. There are three separate groupings. Each sequence 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.

The device has multiple communication interfaces: one MibSPI, two SPIs, one UART/LIN, and two DCANs. The SPI provides a convenient method of serial high-speed communications between similar shift-register type devices. The UART/LIN supports the Local Interconnect standard 2.1 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 applications operating in noisy and harsh environments (for example, automotive and industrial applications) that require reliable serial communication or multiplexed wiring.

The Frequency-Modulated Phase-Locked Loop (FMPLL) clock module is used to multiply the external frequency reference to a higher frequency for internal use. The FMPLL provides one of the five possible clock source inputs to the Global Clock Module (GCM). The 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 pin. 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 Error Signaling Module (ESM) monitors all device errors and determines whether an interrupt is generated or the external nERROR pin is toggled when a fault is detected. The nERROR pin can be monitored externally as an indicator of a fault condition in the microcontroller.

The I/O Multiplexing and Control Module (IOMM) allows the configuration of the input/output pins to support alternate functions. See Table 4-17 for a list of the pins that support multiple functions on this device.

With integrated safety features and a wide choice of communication and control peripherals, the RM42L432 device is an ideal solution for real-time control applications with safety-critical requirements.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE
RM42L432PZ LQFP (100) 14.00 mm × 14.00 mm
(1) For more information, see Section 9, Mechanical Packaging and Orderable Information.

1.4 Functional Block Diagram

Figure 1-1 shows a functional block diagram of the device.

RM42L432 fbd_f3_spns186.gifFigure 1-1 Functional Block Diagram