Overview
The RM48L952DPGET is a high-performance microcontroller from Texas Instruments, designed specifically 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 high-reliability requirements.
The microcontroller features dual CPUs running in lockstep, ensuring redundant execution and enhanced fault tolerance. It also includes built-in self-test (BIST) logic for the CPU and on-chip RAMs, error correction code (ECC) on both flash and RAM, and parity protection on peripheral memories.
The RM48L952DPGET is powered by an ARM Cortex-R4F 32-bit RISC CPU, which offers efficient performance with up to 365 DMIPS at 220 MHz. The device supports a wide range of communication interfaces, including Ethernet, USB, CAN, SPI, I2C, and LIN, making it versatile for various industrial and automotive applications.
Key Specifications
| Specification | Details |
|---|---|
| Processor | ARM Cortex-R4F 32-bit RISC CPU |
| Performance | Up to 220 MHz, 1.66 DMIPS/MHz, up to 365 DMIPS |
| Memory | 3MB integrated flash, 256KB data RAM |
| Memory Protection | ECC on flash and RAM, parity on peripheral memories |
| Supply Voltages | Core: 1.2 V, I/O: 3.3 V, ADC: 3.0 to 5.25 V |
| Communication Interfaces | 10/100 Mbps Ethernet MAC, USB, CAN, SPI, I2C, LIN |
| Timers | Two Next Generation High-End Timer (N2HET) modules |
| Analog-to-Digital Converters | Two 12-bit ADCs with up to 24 channels |
| Package Options | 144-Pin LQFP (PGE), 337-Ball NFBGA (ZWT) |
Key Features
- Dual CPUs running in lockstep for enhanced safety and redundancy
- Built-in self-test (BIST) for CPU and on-chip RAMs
- Error correction code (ECC) on flash and RAM, parity on peripheral memories
- Error signaling module with error pin for fault indication
- Voltage and clock monitoring for robust operation
- Two Next Generation High-End Timer (N2HET) modules for sophisticated timing functions
- Two 12-bit multibuffered ADC modules with up to 24 channels
- Multiple communication interfaces including Ethernet, USB, CAN, SPI, I2C, and LIN
- Frequency-Modulated Phase-Locked Loop (FMPLL) and External Clock Prescaler (ECP) for clock management
- DMA controller with 16 channels and 32 peripheral requests, protected by an MPU
- External Memory Interface (EMIF) for off-chip expansion
- Advanced debugging features including ETM, RTP, DMM, and POM
Applications
The RM48L952DPGET is designed for high-performance real-time control applications with safety-critical requirements. It is particularly suited for:
- Automotive safety systems, such as airbag control and anti-lock braking systems (ABS)
- Industrial control systems, including motor control and robotics
- Medical devices requiring high reliability and safety features
- Aerospace and defense applications where robustness and fault tolerance are critical
- Other safety-critical systems that demand advanced timing, communication, and control capabilities
Q & A
- What is the primary CPU used in the RM48L952DPGET?
The RM48L952DPGET uses an ARM Cortex-R4F 32-bit RISC CPU.
- What are the key safety features of the RM48L952DPGET?
The device features dual CPUs in lockstep, BIST for CPU and RAM, ECC on flash and RAM, and parity protection on peripheral memories.
- What is the maximum system clock frequency of the RM48L952DPGET?
The system clock can operate up to 220 MHz.
- What types of communication interfaces are supported by the RM48L952DPGET?
The device supports Ethernet, USB, CAN, SPI, I2C, and LIN interfaces.
- How many ADC channels does the RM48L952DPGET have?
The device has two 12-bit ADCs with up to 24 channels.
- What is the purpose of the N2HET timers in the RM48L952DPGET?
The N2HET timers provide sophisticated timing functions for real-time applications, including pulse-width-modulated outputs, capture or compare inputs, and GPIO.
- Does the RM48L952DPGET support external memory expansion?
Yes, the device has an External Memory Interface (EMIF) for off-chip expansion.
- What debugging features are available on the RM48L952DPGET?
The device includes ETM, RTP, DMM, and POM for advanced debugging capabilities.
- What are the package options for the RM48L952DPGET?
The device is available in 144-Pin LQFP (PGE) and 337-Ball NFBGA (ZWT) packages.
- What are some typical applications for the RM48L952DPGET?
The device is suited for automotive safety systems, industrial control systems, medical devices, aerospace, and other safety-critical applications.
