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Texas Instruments RM48L950DPGET
- Part No.:
- RM48L950DPGET
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
RM48L950DPGET.pdf
- Description:
- IC MCU 16/32BIT 3MB FLSH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,216
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Product details
Overview
RM48L950DPGET from Texas Instruments is a safety-certified 32-bit ARM Cortex-R4F microcontroller with dual lockstep CPUs, 3MB flash (ECC-protected), 256KB RAM (ECC-protected), and integrated safety features including BIST, error signaling, and voltage/clock monitoring - deployed in industrial PLCs, medical ventilators, and radiation therapy systems.
For engineers reviewing the RM48L950DPGET datasheet, RM48L950DPGET pinout, RM48L950DPGET application, or RM48L950DPGET equivalent, this page delivers verified technical context, pin-level design meaning, real-world safety-critical use cases, and validated alternative options for functional substitution in IEC 61508/ISO 26262-compliant designs.
Technical Context
The RM48L950DPGET implements a dual-CPU lockstep architecture with hardware BIST, ECC on flash and SRAM, parity on peripheral memories, and loopback-capable I/O - all required for ASIL-D and SIL-3 system certification. Its FMPLL and non-modulating PLL provide independent clock domains for safety partitioning.
It integrates two N2HET timing coprocessors (32 + 18 channels), two 12-bit MibADCs (24 + 16 shared channels), three DCAN controllers (CAN 2.0B), 10/100 Ethernet MAC (MII/RMII/MDIO), and dual-port USB 2.0 host + full-speed device - enabling deterministic real-time control with fault containment across communication, timing, and conversion subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-R4F, 200 MHz max, 332 DMIPS, FPU with single/double precision |
| Memory | 3MB program flash with ECC; 256KB data RAM with ECC; 64KB emulated EEPROM flash |
| Safety Architecture | Dual lockstep CPUs, CPU/RAM BIST, ECC on flash/RAM, parity on peripheral RAM, ERROR pin signaling |
| Analog Peripherals | Two 12-bit MibADCs: ADC1 with 24 channels, ADC2 with 16 shared channels, 64-word parity-protected buffers each |
| Timing Peripherals | N2HET1 (32 channels), N2HET2 (18 channels), each with HTU DMA and MPU protection |
| Communication Interfaces | Three DCAN (1 Mbps), one LIN, one SCI, three MibSPI, two SPI, one I²C, 10/100 EMAC, dual-port USB 2.0 host + device |
| Package & Pin Count | LQFP-144 (PGE), 20.0 mm × 20.0 mm, green RoHS-compliant package |
Pinout & Package
LQFP-144 (PGE) package with 144 leads, 0.5 mm pitch, 20.0 mm × 20.0 mm body size, green RoHS-compliant finish. Designed for surface-mount assembly and thermal management in industrial control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| nPORRST | Power-on reset input | Active-low asynchronous reset asserted at power-up; initiates internal BIST and memory initialization sequence |
| nRST | Warm reset input | Active-low synchronous reset that preserves safety state registers and enables controlled recovery without full reinitialization |
| nERROR | Fault signaling output | Open-drain active-low signal driven by ESM to indicate detected fault (e.g., ECC double-bit error, clock failure) |
| VCC / VSS | Core power / ground | 1.2 V nominal core supply (1.14–1.32 V range); dedicated Kelvin ground for low-noise analog reference |
| VCCIO / VSS | I/O power / ground | 3.3 V nominal I/O supply (3.0–3.6 V range); supports IEEE 802.3-compliant 3.3-V EMAC interface |
| VCCAD / VSSAD | ADC power / analog ground | 3.0–5.25 V ADC supply with separate analog ground plane; enables high-precision 12-bit conversion under noisy conditions |
| OSCIN / OSCOUT | Crystal oscillator interface | Supports external crystal (1–25 MHz) or external clock source for FMPLL reference; critical for clock domain integrity |
| ECLK | External clock monitor output | User-programmable low-frequency output derived from VCLK; used for external watchdog or clock health verification |
Key Features
| Feature | Design Value |
|---|---|
| Dual lockstep Cortex-R4F CPUs | Hardware-enforced instruction-by-instruction comparison with automatic fault detection and ERROR pin assertion |
| ECC-protected memory subsystem | Single-bit correction and double-bit detection on 3MB flash and 256KB RAM - prevents silent data corruption in safety-critical execution |
| Integrated Error Signaling Module (ESM) | Centralized fault aggregator that prioritizes and routes errors to interrupt or nERROR pin based on configurable severity levels |
| Two N2HET timing coprocessors | Offloads complex PWM, capture, and GPIO timing from main CPU; each includes HTU for DMA transfers and MPU for memory access isolation |
| Multibuffered 12-bit ADC with shared channels | Two independent ADC modules with 64-word parity-protected buffers per module; 16 channels shared between them for flexible sensor routing |
| EMAC with MII/RMII/MDIO support | IEEE 802.3-compliant 10/100 Ethernet interface with hardware checksum offload and descriptor-based DMA for deterministic network stack operation |
Applications
| Industrial Safety PLC | Medical Ventilator Control |
|---|---|
Use Scenario: Real-time motion control and emergency shutdown logic in certified programmable logic controllers for hazardous area automation. IC Role / Device Role / Timing Role: Primary safety controller executing SIL-3 logic with lockstep CPU validation, ECC memory, and DCAN fieldbus communication. Use Value: Enables compliance with IEC 61508 via built-in BIST, error signaling, and dual-channel ADC sampling for redundant pressure/flow sensing. |
Use Scenario: Closed-loop respiratory gas delivery with precise pressure, flow, and O₂ concentration monitoring in life-support ventilators. IC Role / Device Role / Timing Role: Central safety MCU managing N2HET-driven valve timing, dual ADC acquisition, and CAN-based alarm distribution. Use Value: Supports ISO 13485/IEC 62304 compliance through ECC RAM/flash, lockstep execution, and ESM-triggered fail-safe transitions. |
| Power Generation Monitoring | Robotic Surgery Interface |
Use Scenario: Grid synchronization and fault detection in wind turbine pitch control and solar inverter supervision systems. IC Role / Device Role / Timing Role: High-integrity data acquisition node interfacing with current/voltage sensors via MibADC and communicating over DCAN/Ethernet. Use Value: Delivers SIL-2 capability via FMPLL clock monitoring, voltage supervision, and parity-protected peripheral RAM for sensor data buffering. |
Use Scenario: Real-time actuator coordination and force feedback processing in minimally invasive surgical robots requiring sub-millisecond latency. IC Role / Device Role / Timing Role: Deterministic timing controller using N2HET for motor commutation and EMAC for surgeon console telemetry. Use Value: Achieves ASIL-B alignment via lockstep CPU, HTU-secured DMA transfers, and CRC-protected communication stacks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar safety microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RM48L952ZWT | Same ARM Cortex-R4F core, 3MB flash, 256KB RAM, but in 337-ball NFBGA (ZWT) package; adds ETM trace data bus (32-bit) | Targeted for space-constrained, high-density PCBs requiring full instruction trace; lacks LQFP thermal dissipation margin | Select when board layout allows BGA and full CoreSight trace is required for certification evidence |
| RM46L852ZWT | ARM Cortex-R5F core, 220 MHz, 1280KB flash, 192KB RAM, 4x CAN, but no EMAC or USB; different safety IP block implementation | Optimized for CAN-heavy automotive chassis control; not suitable for Ethernet/USB-dependent medical or industrial gateways | Choose only for CAN-centric ASIL-B systems where Ethernet connectivity is unnecessary |
Compared with RM48L950DPGET, RM48L952ZWT offers identical safety peripherals and higher trace bandwidth in a smaller footprint, while RM46L852ZWT trades Ethernet/USB for extra CAN and R5F performance - making RM48L950DPGET uniquely balanced for mixed-protocol, thermally managed safety gateways.
Availability
RM48L950DPGET is available at Aetrix Electronics and suitable for industrial PLCs, medical ventilators, and power generation monitoring systems requiring stable component supply, long-term lifecycle assurance, and certified safety-grade sourcing.
Supply support for RM48L950DPGET includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with decades of automotive and industrial safety IC experience.
The RM48Lx50 product line was designed specifically for IEC 61508 and ISO 26262 functional safety applications - integrating lockstep CPUs, memory ECC, BIST, and fault-signaling hardware into a single-chip solution for safety-critical real-time control.
FAQ
What safety certifications does the RM48L950DPGET support out of the box?
The RM48L950DPGET is architected to support IEC 61508 SIL-3 and ISO 26262 ASIL-D compliance through integrated hardware features: dual lockstep CPUs, ECC on flash and RAM, BIST for CPU and memory, parity on peripheral RAM, and an Error Signaling Module with dedicated nERROR pin. Certification requires proper system-level integration and software qualification - the RM48L950DPGET provides the foundational hardware safety mechanisms needed to achieve those targets.
Does the RM48L950DPGET include Ethernet and USB interfaces?
Yes, the RM48L950DPGET includes a full-featured 10/100 Ethernet MAC (EMAC) supporting MII, RMII, and MDIO interfaces, and a dual-port USB 2.0 subsystem comprising a 2-port OHCI-compatible host controller and a full-speed USB device controller. These interfaces are fully integrated into the safety architecture - EMAC uses dedicated DMA channels with MPU protection, and USB operates under ESM-monitored clock domains.
What is the difference between RM48L950DPGET and RM48L950ZWT?
The RM48L950DPGET and RM48L950ZWT share identical silicon functionality - same ARM Cortex-R4F core, 3MB flash, 256KB RAM, and peripheral set - but differ only in packaging: RM48L950DPGET uses a 144-pin LQFP (PGE) package, while RM48L950ZWT uses a 337-ball NFBGA (ZWT) package. The PGE variant offers easier prototyping, thermal management, and reworkability; the ZWT variant enables higher I/O density and smaller PCB footprint.
Can the RM48L950DPGET operate without external crystal?
Yes, the RM48L950DPGET supports both external crystal (via OSCIN/OSCOUT pins) and external clock input modes. It also includes an internal oscillator for initial boot, but for safety-critical operation, TI recommends using an external crystal or clock source with FMPLL clock monitoring enabled - the FMPLL's built-in slip detector validates reference stability and triggers ESM faults if deviation exceeds tolerance.
How many ADC channels does the RM48L950DPGET support, and are they safety-redundant?
The RM48L950DPGET integrates two independent 12-bit MibADC modules: ADC1 with 24 dedicated channels, and ADC2 with 16 channels - 16 of which are shared with ADC1. Each module has 64-word parity-protected result buffers. While not inherently redundant, their independence, parity protection, and ability to sample the same physical signal via shared channels enable architecting SIL-2/3 diagnostics - e.g., cross-checking results or time-interleaved sampling for fault detection.
RM48L950DPGET Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 144-LQFP
- Series:
- Hercules™ RM4 ARM® Cortex®-R4, Functional Safety (FuSa)
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-R4F
- Core Size:
- 16/32-Bit
- Speed:
- 200MHz
- Connectivity:
- CANbus, EBI/EMI, Ethernet, I2C, LINbus, MibSPI, SCI, SPI, UART/USART, USB
- Peripherals:
- DMA, POR, PWM, WDT
- Number of I/O:
- 64
- Program Memory Size:
- 3MB (3M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 64K x 8
- RAM Size:
- 256K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.14V ~ 1.32V
- Data Converters:
- A/D 24x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
RM48L950DPGET FAQ
1.How can I place an order for RM48L950DPGET through Aetrix?
Please submit a Request for Quotation (RFQ) for RM48L950DPGET on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for RM48L950DPGET reliable?
The price and inventory of RM48L950DPGET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RM48L950DPGET is usually 5 days.
3.What payment methods are accepted for RM48L950DPGET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RM48L950DPGET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RM48L950DPGET?
RM48L950DPGET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RM48L950DPGET order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for RM48L950DPGET?
For technical support, including RM48L950DPGET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RM48L950DPGET requirements.
6.How does Aetrix verify that RM48L950DPGET is sourced from the original manufacturer or authorized distributors?
All RM48L950DPGET products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that RM48L950DPGET meets industry standards.
7.What is the process for return or replacement of RM48L950DPGET?
All RM48L950DPGET units undergo pre-shipment inspection (PSI). If there is an issue with RM48L950DPGET, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The RM48L950DPGET part is unused and in its original packaging.
Return procedure for RM48L950DPGET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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