Overview
The Texas Instruments RM48L952DZWTT is a high-performance microcontroller designed for safety-critical applications. This device is part of the RM48L952 family, which integrates advanced safety features and robust peripherals to support real-time control and communication. The RM48L952DZWTT features dual CPUs running in lockstep, ensuring high reliability and fault tolerance. It is powered by the ARM Cortex-R4F 32-bit RISC CPU, which offers efficient processing with up to 365 DMIPS at 220 MHz. The device supports various communication interfaces and includes extensive memory and peripheral capabilities, making it an ideal solution for applications requiring high performance and safety.
Key Specifications
| Parameter | Specification |
|---|---|
| Processor | ARM Cortex-R4F 32-bit RISC CPU |
| System Clock | Up to 220 MHz |
| Core Supply Voltage (VCC) | 1.2 V Nominal |
| I/O Supply Voltage (VCCIO) | 3.3 V Nominal |
| ADC Supply Voltage (VCCAD) | 3.0 to 5.25 V |
| Program Flash | 3MB with ECC |
| RAM | 256KB with ECC |
| Emulated EEPROM | 64KB of Flash with ECC |
| External Memory Interface | 16-bit |
| Communication Interfaces | 10/100 Mbps Ethernet MAC, USB, CAN, SPI, I2C, LIN, SCI |
| Timers | Two Next Generation High-End Timer (N2HET) Modules |
| Analog-to-Digital Converters (ADCs) | Two 12-bit Multibuffered ADC Modules |
| Package Options | 144-Pin Quad Flatpack (PGE), 337-Ball Grid Array (ZWT) |
Key Features
- Dual CPUs running in lockstep for enhanced safety and reliability
- Error Correction Code (ECC) on flash and RAM interfaces
- Built-In Self-Test (BIST) for CPU and on-chip RAMs
- Error Signaling Module with error pin and voltage and clock monitoring
- ARM Cortex-R4F 32-bit RISC CPU with FPU for single- and double-precision operations
- 12-Region Memory Protection Unit (MPU)
- Integrated memory: 3MB of program flash, 256KB of RAM, and 64KB of flash for emulated EEPROM
- Multiple communication interfaces: Ethernet, USB, CAN, SPI, I2C, LIN, SCI
- Two Next Generation High-End Timer (N2HET) modules and two 12-bit ADC modules
- Frequency-Modulated Phase-Locked Loop (FMPLL) with built-in slip detector and separate nonmodulating PLL
- Trace and calibration capabilities: Embedded Trace Macrocell (ETM-R4), Data Modification Module (DMM), RAM Trace Port (RTP), Parameter Overlay Module (POM)
Applications
The RM48L952DZWTT is designed for safety-critical applications, including:
- Automotive systems: Engine control, transmission control, and advanced driver-assistance systems (ADAS)
- Industrial control systems: Real-time control, motor control, and safety-critical industrial automation
- Aerospace and defense: Safety-critical avionics and defense systems
- Medical devices: Safety-critical medical equipment and diagnostic devices
- Railway and transportation systems: Safety-critical control systems for trains and other transportation vehicles
Q & A
- What is the primary processor used in the RM48L952DZWTT?
The RM48L952DZWTT uses the ARM Cortex-R4F 32-bit RISC CPU.
- What is the maximum system clock frequency of the RM48L952DZWTT?
The maximum system clock frequency is up to 220 MHz.
- What safety features does the RM48L952DZWTT include?
The device includes dual CPUs running in lockstep, ECC on flash and RAM, BIST for CPU and RAM, and error signaling modules.
- How much integrated flash and RAM does the RM48L952DZWTT have?
The device has 3MB of integrated flash and 256KB of RAM, both with ECC.
- What communication interfaces are supported by the RM48L952DZWTT?
The device supports Ethernet, USB, CAN, SPI, I2C, LIN, and SCI interfaces.
- What are the N2HET modules used for in the RM48L952DZWTT?
The N2HET modules are advanced intelligent timers used for pulse-width-modulated outputs, capture or compare inputs, or GPIO, and are especially suited for applications requiring multiple sensor information and complex time pulses.
- How many ADC channels does the RM48L952DZWTT have?
The device has two 12-bit ADC modules with up to 24 channels.
- What package options are available for the RM48L952DZWTT?
The device is available in 144-Pin Quad Flatpack (PGE) and 337-Ball Grid Array (ZWT) packages.
- What are some typical applications of the RM48L952DZWTT?
The device is used in automotive systems, industrial control systems, aerospace and defense, medical devices, and railway and transportation systems.
- Does the RM48L952DZWTT support any specific safety standards?
The device is designed to meet safety standards such as IEC 61508 and ISO 26262.
