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TMS5702125DZWTQQ1 Datasheet(PDF) 3 Page - Texas Instruments

Part # TMS5702125DZWTQQ1
Description  TMS570LS31x5/21x5 16- and 32-Bit RISC Flash Microcontroller
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TMS5702125DZWTQQ1 Datasheet(HTML) 3 Page - Texas Instruments

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TMS570LS3135, TMS570LS2135, TMS570LS2125
www.ti.com
SPNS164C – APRIL 2012 – REVISED APRIL 2015
1.3
Description
The TMS570LS31x5/21x5 device is a high-performance automotive-grade 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 TMS570LS31x5/21x5 device integrates the ARM Cortex-R4F Floating-Point CPU. The CPU offers an
efficient 1.66 DMIPS/MHz, and has configurations that can run up to 180 MHz, providing up to 298
DMIPS. The device supports the word-invariant big-endian [BE32] format.
The TMS570LS3135 device has 3MB of integrated flash and 256KB of data RAM. The TMS570LS2135
device has 2MB of integrated flash and 256KB of data RAM. The TMS570LS2125 device has 2MB of
integrated flash and 192KB 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 (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 180 MHz. The SRAM supports single-
cycle read and write accesses in byte, halfword, word, and double-word modes.
The TMS570LS31x5/21x5 device features peripherals for real-time control-based applications, including
two Next Generation High-End Timer (N2HET) timing coprocessors 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 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 device has two 12-bit-resolution MibADCs with 24 channels 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 channels are shared between the two MibADCs. 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: three MibSPIs, two SPIs, one LIN, one SCI, three
DCANs, one I2C module, and one FlexRay controller. The SPIs provide a convenient method of serial
high-speed communication 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 vehicle networking and industrial fieldbus) 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 the CPU main memory. Transfers are protected by a dedicated,
built-in MPU.
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.
Copyright © 2012–2015, Texas Instruments Incorporated
Device Overview
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