The TMS570LS0432/0332 device is a high-performance automotive-grade
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 TMS570LS0432/0332 device integrates the ARM Cortex-R4 CPU. The CPU
offers an efficient 1.66DMIPS/MHz, and has configurations that can run up to 80 MHz, providing up
to 132 DMIPS. The device supports the big-endian (BE32) format.
The TMS570LS0432/0332 device has 384KB and 256KB of integrated flash
(respectively) 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 80 MHz. The
SRAM supports single-cycle read and write accesses in byte, halfword, word, and double-word modes
throughout the supported frequency range.
The TMS570LS0432/0332 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
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
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 1Mbps. 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 TMS570LS0432/0332 device is an ideal
solution for real-time control applications with safety-critical requirements.
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