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Texas Instruments RM46L830CZWTT
- Part No.:
- RM46L830CZWTT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 337-LFBGA
- Datasheet:
-
RM46L830CZWTT.pdf
- Description:
- IC MCU 32BIT 1.25MB FLASH 337BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,261
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Product details
Overview
RM46L830CZWTT from Texas Instruments is a safety-certified 32-bit ARM Cortex-R4F microcontroller for ASIL-D and SIL-3 applications, featuring dual lockstep CPUs, 1.25MB ECC flash, 192KB ECC RAM, 3× CAN 2.0B controllers, and dual N2HET timing coprocessors with 44 total I/O terminals - deployed in industrial PLCs, medical ventilators, and turbine control systems.
For engineers reviewing the RM46L830CZWTT datasheet, RM46L830CZWTT pinout, RM46L830CZWTT application, or RM46L830CZWTT equivalent, key selection criteria include functional safety architecture (BIST, ECC, error signaling), real-time peripheral count (7 ePWM, 6 eCAP, 2 eQEP, 2×12-bit MibADC), USB 2.0 host/device support, and 337-ball NFBGA (ZWT) package compatibility with industrial thermal and EMI requirements.
Technical Context
The RM46L830CZWTT implements a dual-CPU lockstep execution model with hardware BIST, ECC on all program/data memory, and parity protection across peripheral RAMs and HTU/DMA buffers - enabling ISO 26262 ASIL-D and IEC 61508 SIL-3 compliance without external safety monitors. Its FMPLL + non-modulating PLL provides independent clock domains for safety-critical and non-safety subsystems.
Real-time control is enabled by two N2HET modules (N2HET1: 32 channels; N2HET2: 18 channels), each with dedicated HTU for DMA-like transfers and integrated angle generation, plus seven ePWM modules supporting deadband, trip-zone, and MibADC synchronization - all accessible via a unified 32-bit memory-mapped peripheral bus with MPU-enforced access isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-R4F @ 200 MHz (332 DMIPS), FPU with single/double precision, 12-region MPU |
| Memory | 1.25MB flash with ECC, 192KB RAM with ECC, 64KB emulated EEPROM with ECC |
| Safety Features | Dual lockstep CPUs, CPU/RAM BIST, ECC on flash/RAM, parity on peripheral RAMs, nERROR fault pin |
| Analog Peripherals | Two 12-bit MibADCs (24 total inputs, 64-word parity-protected buffers each) |
| Timing Peripherals | 2× N2HET (44 I/O terminals), 7× ePWM, 6× eCAP, 2× eQEP, RTI timer, 128-channel VIM |
| Communication | 3× DCAN (CAN 2.0A/B, up to 1 Mbps), 3× MibSPI, 2× SPI, 2× SCI (1 with LIN 2.1), 1× I2C, USB 2.0 OHCI host + device |
| Package & Power | 337-ball NFBGA (ZWT), 16.0 mm × 16.0 mm, VCC = 1.14–1.32 V, VCCIO = 3.0–3.6 V, –40°C to 105°C |
Pinout & Package
RM46L830CZWTT uses a 337-ball NFBGA (ZWT) package with 16.0 mm × 16.0 mm body size, designed for high-density industrial PCB layouts and thermal dissipation in convection-cooled enclosures. Ball pitch is 0.8 mm; power/ground balls are distributed across multiple rows for low-impedance supply routing and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| nERROR | Error signaling output | Active-low open-drain fault indicator tied to external safety controller or watchdog supervisor |
| nPORRST | Power-on reset input | Asynchronous reset asserted during power ramp; initiates internal voltage monitoring and BIST sequence |
| VCC / VSS | Core power / ground | 1.14–1.32 V core supply with dedicated Kelvin sense (VSSAD/VCCAD for analog domain isolation) |
| VCCIO / VSS | I/O power / ground | 3.0–3.6 V I/O domain with separate VSS planes for digital/analog I/O to minimize coupling noise |
| N2HET1[31:0] | N2HET1 programmable I/O | 32-channel high-precision timing interface supporting PWM, capture, GPIO, and encoder signal conditioning |
| DCAN1_RX / DCAN1_TX | CAN 2.0B differential interface | Direct connection to isolated CAN transceiver; supports bit rates up to 1 Mbps in harsh EMI environments |
Key Features
| Feature | Design Value |
|---|---|
| Dual lockstep Cortex-R4F CPUs | Hardware-level redundancy with continuous comparison; detects transient faults and triggers safe state transition |
| ECC-protected memory subsystem | Single-bit correction and double-bit detection on 1.25MB flash and 192KB RAM prevents silent data corruption |
| Two N2HET timing coprocessors | 44 total programmable I/O terminals with HTU-assisted DMA transfers enable deterministic motor control loop timing |
| Integrated safety monitoring | Error Signaling Module (ESM) aggregates faults from clocks, voltage, memory, and peripherals to drive nERROR pin |
| USB 2.0 dual-role capability | OHCI-compliant 2-port host controller + full-speed device port supports field firmware updates and HMI connectivity |
| MibADC with shared channel mapping | 24-input dual 12-bit ADC with 64-word parity buffers and software-configurable group sequencing for sensor fusion |
Applications
| Industrial Safety PLC | Medical Ventilator Control |
|---|---|
Use Scenario: Real-time logic execution and I/O monitoring in certified safety PLCs for factory automation. IC Role / Device Role / Timing Role: Primary safety controller executing SIL-3 logic with lockstep verification and periodic BIST. Use Value: Eliminates need for external safety monitor IC; reduces BOM cost and board area while meeting IEC 61508 Part 2 requirements. |
Use Scenario: Closed-loop pressure and flow control in Class II/III ventilators requiring ASIL-D compliance. IC Role / Device Role / Timing Role: Central safety MCU managing motor drivers, sensors, alarms, and USB-based diagnostics. Use Value: Integrated ePWM + eQEP + MibADC enables precise breath delivery timing and redundant position sensing per ISO 80601-2-12. |
| Turbine Governor System | Radiation Therapy Beam Control |
Use Scenario: Speed regulation and emergency shutdown in wind turbine pitch and yaw control systems. IC Role / Device Role / Timing Role: High-integrity motion controller interfacing with resolver feedback and hydraulic actuators via N2HET. Use Value: Dual N2HET modules provide sub-microsecond jitter-free PWM for servo valves and synchronized capture of encoder signals. |
Use Scenario: Beam collimator positioning and radiation dose monitoring in linear accelerators. IC Role / Device Role / Timing Role: Safety-critical motion controller coordinating stepper motors, limit switches, and ion chamber interfaces. Use Value: Hardware-enforced memory protection (MPU) and ECC prevent unauthorized code execution or corrupted calibration data affecting beam accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar safety microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RM46L430CZWTT | 1MB flash, 128KB RAM, same ZWT package and peripheral set but reduced memory capacity | Suitable for less complex safety functions where full 1.25MB code space is unnecessary | Select when BOM cost sensitivity outweighs future firmware scalability needs |
| RM48L952ZWT | 220 MHz CPU, 3MB flash, 256KB RAM, EMAC, ETM trace, superset feature set | Required for Ethernet-connected safety gateways or systems needing debug trace visibility | Choose when adding 10/100 Ethernet or advanced development trace capability is mandatory |
Compared with RM46L430CZWTT, the RM46L830CZWTT delivers 25% more flash and 50% more RAM for larger safety firmware stacks and runtime data logging; versus RM48L952ZWT, it trades EMAC and trace for lower power and cost while retaining identical safety architecture and real-time peripheral count.
Availability
RM46L830CZWTT is available at Aetrix Electronics and suitable for industrial safety PLCs, medical ventilator control systems, and turbine governor applications requiring stable component supply across extended product lifecycles.
Supply support for RM46L830CZWTT 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 over 50 years of automotive and industrial design-in experience.
The RM46Lx30 product line was engineered specifically for functional safety-critical real-time control, integrating lockstep CPUs, ECC memory, and diagnostic peripherals to meet ISO 26262 ASIL-D and IEC 61508 SIL-3 certification requirements out-of-the-box.
FAQ
What safety certifications does the RM46L830CZWTT support?
The RM46L830CZWTT is architected to support ISO 26262 ASIL-D and IEC 61508 SIL-3 certification. Its dual lockstep Cortex-R4F CPUs, ECC-protected flash and RAM, built-in self-test (BIST), parity-protected peripheral memories, and dedicated nERROR fault signaling enable systematic fault coverage exceeding 99% for safety mechanisms - verified through TI's Functional Safety Documentation Package for RM46Lx30.
Does the RM46L830CZWTT support USB device and host modes simultaneously?
Yes, the RM46L830CZWTT integrates a dual-role USB 2.0 module with a 2-port OHCI-compliant host controller and a full-speed device controller. This allows concurrent operation - for example, connecting USB peripherals (keyboard, storage) via host ports while exposing a CDC ACM serial interface to a PC via the device port - all managed by the same RM46L830CZWTT silicon without external USB switches or hubs.
How many CAN interfaces does the RM46L830CZWTT include, and what protocol versions are supported?
The RM46L830CZWTT includes three independent DCAN controllers compliant with CAN Protocol Version 2.0A and 2.0B, supporting standard (11-bit) and extended (29-bit) identifiers with bit rates up to 1 Mbps. Each DCAN has 64 mailboxes with parity protection and supports loopback self-test mode - essential for validating communication integrity in safety-critical RM46L830CZWTT deployments.
What is the role of the N2HET modules in the RM46L830CZWTT, and how many I/O terminals do they provide?
The RM46L830CZWTT features two Next Generation High-End Timer (N2HET) modules: N2HET1 with 32 programmable channels and N2HET2 with 18 channels, totaling 44 I/O terminals. These offload precise timing tasks - including PWM generation, edge capture, quadrature decoding, and general-purpose I/O - from the main CPU, enabling deterministic real-time response in motor control and safety interlock applications using the RM46L830CZWTT.
Can the RM46L830CZWTT's analog-to-digital converters operate independently or share resources?
Yes, the RM46L830CZWTT integrates two 12-bit Multibuffered ADC (MibADC) modules: MibADC1 with 24 dedicated inputs and MibADC2 with 16 inputs, where 16 channels are shared between both modules. Each supports three configurable conversion groups, individual or sequential triggering, and 64-word parity-protected result buffers - allowing flexible sensor acquisition strategies in RM46L830CZWTT-based systems without resource contention.
RM46L830CZWTT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 337-LFBGA
- 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, I2C, LINbus, MibSPI, SCI, SPI, UART/USART, USB
- Peripherals:
- DMA, POR, PWM, WDT
- Number of I/O:
- 101
- Program Memory Size:
- 1.25MB (1.25M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 64K x 8
- RAM Size:
- 192K 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:
RM46L830CZWTT FAQ
1.How can I place an order for RM46L830CZWTT through Aetrix?
Please submit a Request for Quotation (RFQ) for RM46L830CZWTT 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 RM46L830CZWTT reliable?
The price and inventory of RM46L830CZWTT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RM46L830CZWTT is usually 5 days.
3.What payment methods are accepted for RM46L830CZWTT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RM46L830CZWTT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RM46L830CZWTT?
RM46L830CZWTT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RM46L830CZWTT 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 RM46L830CZWTT?
For technical support, including RM46L830CZWTT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RM46L830CZWTT requirements.
6.How does Aetrix verify that RM46L830CZWTT is sourced from the original manufacturer or authorized distributors?
All RM46L830CZWTT 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 RM46L830CZWTT meets industry standards.
7.What is the process for return or replacement of RM46L830CZWTT?
All RM46L830CZWTT units undergo pre-shipment inspection (PSI). If there is an issue with RM46L830CZWTT, 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 RM46L830CZWTT part is unused and in its original packaging.
Return procedure for RM46L830CZWTT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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