1 Features
• VID - V62/18621
• Radiation Hardened
– Single Event Latch-up (SEL) Immune to
43MeV-cm2/mg at 125°C
– Total Ionizing Dose (TID) RLAT for Every Wafer
Lot up to 30krad (Si)
• Space Enhanced Plastic
– Controlled Baseline
– Gold Au wire
– One Assembly/Test Site
– One Fabrication Site
– Available in Extended (–55°C to 125°C)
Temperature Range
– Extended Product Life Cycle
– Extended Product-Change Notification
– Product Traceability
– Enhanced Mold Compound for Low Outgassing
• High-Performance Automotive-Grade
Microcontroller for Safety-Critical Applications
– Dual-Core Lockstep CPUs With ECC-Protected
Caches
– ECC on Flash and RAM Interfaces
– Built-In Self-Test (BIST) for CPU, High-End
Timers, and On-Chip RAMs
– Error Signaling Module (ESM) With Error Pin
– Voltage and Clock Monitoring
• Arm® Cortex®-R5F 32-Bit RISC CPU
– 1.66 DMIPS/MHz With 8-Stage Pipeline
– FPU With Single- and Double-Precision
– 16-Region Memory Protection Unit (MPU)
– 32KB of Instruction and 32KB of Data Caches
With ECC
– Open Architecture With Third-Party Support
• Operating Conditions
– Up to 300-MHz CPU Clock
– Core Supply Voltage (VCC): 1.14 to 1.32V
– I/O Supply Voltage (VCCIO): 3.0 to 3.6V
• Integrated Memory
– 4MB of Program Flash With ECC
– 512KB of RAM With ECC
– 128KB of Data Flash for Emulated EEPROM
With ECC
• 16-Bit External Memory Interface (EMIF)
• Hercules™ Common Platform Architecture
– Consistent Memory Map Across Family
– Real-Time Interrupt (RTI) Timer (OS Timer)
– Two 128-Channel Vectored Interrupt Modules
(VIMs) With ECC Protection on Vector Table
• VIM1 and VIM2 in Safety Lockstep Mode
– Two 2-Channel Cyclic Redundancy Checker
(CRC) Modules
• Direct Memory Access (DMA) Controller
– 32 Channels and 48 Peripheral Requests
– ECC 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)
• Trace and Calibration Capabilities
– ETM™, RTP, DMM, POM
• Multiple Communication Interfaces
– 10/100Mbps Ethernet MAC (EMAC)
• IEEE 802.3 Compliant (3.3V I/O Only)
• Supports MII, RMII, and MDIO
– FlexRay Controller With 2 Channels
• 8KB of Message RAM With ECC Protection
• Dedicated FlexRay Transfer Unit (FTU)
– Four CAN Controller (DCAN) Modules
• 64 Mailboxes, Each With ECC Protection
• Compliant to CAN Protocol Version 2.0B
– Two Inter-Integrated Circuit (I2C) Modules
– Five Multibuffered Serial Peripheral Interface
(MibSPI) Modules
• MibSPI1: 256 Words With ECC Protection
• Other MibSPIs: 128 Words With ECC
Protection
– Four UART (SCI) Interfaces, Two With Local
Interconnect Network (LIN 2.1) Interface
Support
• Two Next Generation High-End Timer (N2HET)
Modules
– 32 Programmable Channels Each
– 256-Word Instruction RAM With Parity
– Hardware Angle Generator for Each N2HET
– Dedicated High-End Timer Transfer Unit (HTU)
for Each N2HET
• Two 12-Bit Multibuffered Analog-to-Digital
Converter (MibADC) Modules
– MibADC1: 32 Channels Plus Control for up to
1024 Off-Chip Channels
– MibADC2: 25 Channels
– 16 Shared Channels
– 64 Result Buffers Each With Parity Protection
• Enhanced Timing Peripherals
– 7 Enhanced Pulse Width Modulator (ePWM)
Modules
– 6 Enhanced Capture (eCAP) Modules
– 2 Enhanced Quadrature Encoder Pulse (eQEP)
Modules
• Three On-Die Temperature Sensors
• Up to 145 Pins Available for General-Purpose
I/O (GPIO)
• 16 Dedicated GPIO Pins With External Interrupt
Capability
• Packages
– 337-Ball Grid Array (GWT) [Green]

2 Applications
• Support Low Earth Orbit Space Applications
• Space Braking Systems (Antilock Brake Systems
and Electronic Stability Control)
• Electric Power Steering (EPS)
• HEV and EV Inverter Systems
• Battery-Management Systems
• Active Driver Assistance Systems
• Aerospace and Avionics
• Railway Communications
• Off-road Vehicles

3 Description
The TMS570LC4357-SEP device is part of the Hercules TMS570 series of high-performance automotive-grade
Arm® Cortex®-R-based MCUs. Comprehensive documentation, tools, and software are available to assist in
the development of ISO 26262 and IEC 61508 functional safety applications. Start evaluating today with the
Hercules TMS570LC43x LaunchPad Development Kit. The TMS570LC4357-SEP device has on-chip diagnostic
features including: dual CPUs in lockstep, Built-In Self-Test (BIST) logic for CPU, the N2HET coprocessors, and
for on-chip SRAMs; ECC protection on the L1 caches, L2 flash, and SRAM memories. The device also supports
ECC or parity protection on peripheral memories and loopback capability on peripheral I/Os.
The TMS570LC4357-SEP device integrates two ARM Cortex-R5F floating-point CPUs, operating in lockstep,
which offer an efficient 1.66DMIPS/MHz, and can run up to 300MHz providing up to 498DMIPS. The device
supports the big-endian [BE32] format.
The TMS570LC4357-SEP device has 4MB of integrated flash and 512KB 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 3.3V
supply input (the same level as the I/O supply) for all read, program, and erase operations. The SRAM supports
read and write accesses in byte, halfword, and word modes.
The TMS570LC4357-SEP device features peripherals for real-time control-based applications, including two
Next Generation High-End Timer (N2HET) timing coprocessors with up to 64 total I/O terminals.
The N2HET is an advanced intelligent timer that provides sophisticated timing functions for real-time
applications. The timer is software-controlled, 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
designed for applications requiring multiple sensor information or drive actuators with complex and accurate time
pulses. The 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 Pulse Width Modulator (ePWM) module can generate complex pulse width waveforms with
minimal CPU overhead or intervention. The ePWM is easy to use and 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 is an excellent choice for digital motor control applications.
The Enhanced Capture (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 not needed for capture applications.
The Enhanced Quadrature Encoder Pulse (eQEP) module directly interfaces 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 41 total channels and 64 words of parity-protected buffer
RAM. The MibADC channels can be converted individually or by group for special conversion sequences.
Sixteen channels are shared between the two MibADCs. Each MibADC supports 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.
One of the channels in MibADC1 and two of the channels in MibADC2 can be used to convert temperature
measurements from the three on-chip temperature sensors.
The device has multiple communication interfaces: Five MibSPIs; four UART (SCI) interfaces, two with LIN
support; four CANs; two I2C modules; one Ethernet Controller; and one FlexRay controller. The SPI provides
a convenient method of serial interaction for high-speed communications between similar shift-register type
devices. The LIN supports the Local Interconnect standard (LIN 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 2.0B 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 fields) that require reliable serial
communication or multiplexed wiring. The FlexRay controller uses a dual-channel serial, fixed time base
multimaster communication protocol with communication rates of 10 Mbps per channel. A FlexRay Transfer
Unit (FTU) enables autonomous transfers of FlexRay data to and from main CPU memory. HTU transfers are
protected by a dedicated, built-in MPU. The Ethernet module supports MII, RMII, and Management Data I/O
(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 module supports speeds of 100
and 400 kbps.
The Frequency-Modulated Phase-Locked Loop (FMPLL) clock module multiplies 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 internal device clock domains.
The device also has two External Clock Prescaler (ECP) modules. When enabled, the ECPs output a continuous
external clock on the ECLK1 and ECLK2 balls. 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 32 channels, 48 peripheral requests, and ECC protection on
the controller's memory. An MPU is built into the DMA to protect memory against erroneous transfers.
The Error Signaling Module (ESM) monitors on-chip device errors and determines whether an interrupt or
external Error pin/ball (nERROR) is triggered when a fault is detected. The nERROR signal 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) is included to enhance the debugging capabilities of application code.
The POM can reroute flash accesses to internal RAM or to the EMIF, thus avoiding the reprogramming steps
necessary for parameter updates in flash. This capability is particularly helpful during real-time system calibration
cycles.
Several interfaces are implemented to enhance the debugging capabilities of application code. In addition to
the built-in Arm® Cortex®-R5F CoreSight debug features, the Embedded Cross Trigger (ECT) supports the
interaction and synchronization of multiple triggering events within the SoC. An External Trace Macrocell (ETM)
provides instruction and data trace of program execution. For instrumentation purposes, a RAM Trace Port
(RTP) module is implemented to support high-speed tracing of RAM and peripheral accesses by the CPU or any
other master. A Data Modification Module (DMM) gives the ability to write external data into the device memory.
Both the RTP and DMM have no or minimal impact on the program execution time of the application code.
With integrated safety features and a wide choice of communication and control peripherals, the
TMS570LC4357-SEP device is designed for high-performance real-time control applications with safety-critical
requirements.