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RM44L920 Datasheet(PDF) 4 Page - Texas Instruments |
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RM44L920 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 158 page  RM44L920, RM44L520 SPNS229B – OCTOBER 2014 – REVISED NOVEMBER 2015 www.ti.com The device has multiple communication interfaces: three MibSPIs; two SPIs; two SCIs, one of which can be used as LIN; up to three DCANs; and one I2C module. 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 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 2.0B 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 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. 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 FMPLL provides one of the six 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) circuit 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 device errors and determines whether an interrupt or external error signal (nERROR) is asserted when a fault is detected. The nERROR terminal can be monitored externally as an indicator of a fault condition in the microcontroller. With integrated functional safety features and a wide choice of communication and control peripherals, the RM44Lx20 device is an ideal solution for high-performance, real-time control applications with safety- critical requirements. Device Information(1) PART NUMBER PACKAGE BODY SIZE RM44L920PGE LQFP (144) 20.0 mm × 20.0 mm RM44L920PZ LQFP (100) 14.0 mm × 14.0 mm RM44L520PGE LQFP (144) 20.0 mm × 20.0 mm RM44L520PZ LQFP (100) 14.0 mm × 14.0 mm (1) For more information, see Section 10, Mechanical Packaging and Orderable Information. 4 Device Overview Copyright © 2014–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: RM44L920 RM44L520 |
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