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Infineon Technologies MB91F526KWBPMC-GS-F4K5E1
- Part No.:
- MB91F526KWBPMC-GS-F4K5E1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
MB91F526KWBPMC-GS-F4K5E1.pdf
- Description:
- IC MCU 32B 1.0625MB FLSH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,539
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Product details
Overview
MB91F526KWBPMC-GS-F4K5E1 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S microcontroller for automotive powertrain and body control units, featuring 1024+64 KB program flash, 128 KB main RAM + 8 KB backup RAM, 80 MHz max CPU frequency, IEEE 754-compliant FPU, and triple CAN 2.0B controllers supporting up to 1 Mbps.
For engineers reviewing the MB91F526KWBPMC-GS-F4K5E1 datasheet, MB91F526KWBPMC-GS-F4K5E1 pinout, MB91F526KWBPMC-GS-F4K5E1 application, or MB91F526KWBPMC-GS-F4K5E1 equivalent, this page delivers verified technical context, validated pin functions, automotive-grade peripheral integration, and real-world timing and memory configuration details essential for ECU design and ASIL-B system qualification.
Technical Context
The MB91F526KWBPMC-GS-F4K5E1 implements the FR81S 32-bit RISC core with 5-stage pipeline, Harvard architecture, and MPU-enforced privilege separation between user and supervisor modes. It integrates dual 12-bit ADCs (48 total channels), 2×8-bit DACs, and 48-channel PPG for precise PWM-driven actuator control in engine management systems.
Its clock system combines main (4–16 MHz), sub (32 kHz), and internal 100 kHz CR oscillators with SSCG-based PLL (1×–20× multiplication), enabling deterministic real-time operation across -40°C to +125°C. The device supports LIN 2.1, I²C (8 channels), UART/CSIO (12 serial channels), and hardware CRC for firmware integrity verification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | FR81S 32-bit RISC, 5-stage pipeline, 1 instruction/cycle at 80 MHz (12.5 ns min execution time) |
| Memory | 1024+64 KB program flash + 64 KB WorkFlash; 128 KB main RAM + 8 KB backup RAM with ECC |
| Analog Peripherals | 12-bit ADC × 48 ch (1.4 μs conversion); 8-bit DAC × 2 ch; RTC with subclock calibration |
| Communication | CAN 2.0B × 3 ch (128/64 msg buffers); LIN 2.1 × 12 ch; I²C × 8 ch; UART/CSIO × 12 ch |
| Timers & PWM | PPG × 48 ch (16-bit); free-run timer × 3 ch (16/32-bit); reload timer × 8 ch; waveform generator × 6 ch |
| Power & Safety | 5 V supply with internal 1.2 V regulator; LVD reset (2.8 V ±8%); hardware watchdog; TPU and OCD debug support |
| Package & Environment | LQFP-176 (24×24 mm, 0.5 mm pitch); AEC-Q100 Grade 1 qualified (-40°C to +125°C) |
Pinout & Package
LQFP-176 package with 0.5 mm pitch, 24 mm × 24 mm body, and exposed thermal pad. Pin count and I/O mapping align with CY91F526K series specification for full peripheral access including CANH/CANL, LIN, ADC inputs, PPG outputs, and external bus interface signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / Ground | Dedicated 5 V supply pins with decoupling requirements per datasheet Section 11.2; multiple VSS pins ensure low-noise analog/digital grounding |
| CLKIN, CLKOUT | Main oscillator input/output | Accepts 4–16 MHz crystal; CLKOUT provides buffered reference for external circuit synchronization |
| XTAL32, EXTAL32 | Sub-oscillator input/output | Connects 32.768 kHz crystal for RTC and low-power mode timing; supports clock supervisor fault detection |
| CAN0TX, CAN0RX | CAN channel 0 differential interface | Direct connection to external CAN transceiver; supports 1 Mbps bit rate with integrated protocol controller |
| LIN0TX, LIN0RX | LIN 2.1 channel 0 interface | Single-wire UART-compatible interface with synch break generation/detection for automotive body networks |
| AD00–AD47 | Analog input channels | 48 dedicated ADC input pins mapped to two 12-bit successive-approximation converters with simultaneous sampling capability |
| PPG00–PPG47 | Pulse pattern generator outputs | 48 GPIO-capable pins supporting LED drive, motor phase control, and high-resolution PWM with dead-time insertion |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE 754-compliant 32-bit FPU with 16×32-bit registers enables real-time math for PID control and sensor fusion without software emulation |
| Memory protection unit (MPU) | Eight configurable protection areas enforce privilege-level access control for code/data, supporting ASIL-B partitioning in ISO 26262-compliant ECUs |
| Hardware CRC accelerator | Dedicated CRC-32 engine offloads firmware image validation during boot and OTA updates, reducing CPU overhead by >95% vs. software CRC |
| Multi-source DMA controller | 16-channel DMA with dual transfer triggers (peripheral request + software) enables zero-CPU-cycle data movement between ADC, CAN, and RAM |
| Low-power mode sequencing | Sleep/Stop/Watch/Sub RUN modes with subclock retention and fast wake-up (<10 μs) support battery-sensitive automotive modules like door controllers |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
Use Scenario: Real-time combustion timing, fuel injection pulse width, and knock detection in gasoline direct injection engines. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop control algorithms with <12.5 ns instruction cycle and deterministic CAN/LIN messaging. Use Value: Integrated FPU and dual 12-bit ADCs enable sub-millisecond sensor processing; 128-message CAN buffer prevents frame loss during torque surge events. | Use Scenario: Gear selection logic, clutch pressure modulation, and shift quality optimization in 8-speed automatic transmissions. IC Role / Device Role / Timing Role: High-integrity controller managing hydraulic solenoid drivers via PPG outputs with synchronized PWM dead-time control. Use Value: 48-channel PPG supports independent valve timing; ECC RAM ensures data integrity during vibration-induced voltage transients. |
| Body Control Module (BCM) | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
Use Scenario: Centralized management of lighting, window lift, door locks, and HVAC in premium vehicle platforms. IC Role / Device Role / Timing Role: LIN master coordinating up to 12 slave nodes while maintaining real-time response to CAN-based gateway commands. Use Value: 12-channel LIN interface eliminates external transceivers; subclock RTC maintains calendar time during ignition-off battery conservation. | Use Scenario: Aggregation and preprocessing of radar, camera, and ultrasonic sensor data before forwarding to domain controller. IC Role / Device Role / Timing Role: Time-synchronized data acquisition node using hardware timestamping on ADC and CAN RX paths. Use Value: Dual 12-bit ADCs sample analog radar IF signals at 1.4 μs resolution; hardware CRC validates sensor firmware updates over CAN FD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 32-bit automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RH850/F1K | 32-bit G3K core, 200 MHz max, 2 MB flash, no integrated FPU; uses separate safety monitor chip | Targeted at higher ASIL-D systems requiring dual-core lockstep; lacks on-chip LIN and subclock RTC | Select when functional safety certification beyond ASIL-B is required and external safety monitoring is acceptable |
| S32K344 | ARM Cortex-M7, 240 MHz, 4 MB flash, FPU, 4x CAN FD; requires external 32 kHz crystal for RTC | Optimized for CAN FD gateways and OTA update security; no built-in WorkFlash or PPG waveform generator | Select for next-gen EV architectures needing CAN FD bandwidth and secure boot, not legacy LIN/PPG-based subsystems |
Compared with RH850/F1K and S32K344, the MB91F526KWBPMC-GS-F4K5E1 delivers superior integration for cost-sensitive ASIL-B body and powertrain modules-retaining LIN, subclock RTC, and 48-channel PPG without external components-while offering deterministic 80 MHz real-time performance and ECC-protected memory within AEC-Q100 Grade 1 limits.
Availability
MB91F526KWBPMC-GS-F4K5E1 is available at Aetrix Electronics and suitable for automotive engine control units, transmission control modules, and body control modules requiring stable component supply under extended temperature and long-lifecycle production programs.
Supply support for MB91F526KWBPMC-GS-F4K5E1 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
Infineon Technologies is a global semiconductor leader specializing in power management, automotive MCUs, and security solutions, with deep expertise in AEC-Q100-qualified embedded systems.
The CY91520 series-now part of Infineon's automotive microcontroller portfolio-was designed specifically for cost-optimized, high-reliability engine, transmission, and body control applications requiring integrated analog peripherals, LIN/CAN networking, and ASIL-B compliance without external co-processors.
FAQ
What is the maximum operating frequency and associated instruction timing?
The MB91F526KWBPMC-GS-F4K5E1 achieves a maximum CPU frequency of 80 MHz using its on-chip PLL with 4 MHz crystal input and 20× multiplication. This yields a minimum instruction execution time of 12.5 ns per basic instruction, confirmed in the CY91520 Series datasheet Section 1. Product Lineup and electrical characteristics table on page 133.
Does this MCU support hardware floating-point arithmetic, and what standard does it comply with?
Yes, the MB91F526KWBPMC-GS-F4K5E1 includes a fully integrated IEEE 754-compliant single-precision floating-point unit (FPU) with 16×32-bit floating-point registers. It supports signed 32-bit multiplication in 5 cycles and is explicitly documented in the "Features" section of the datasheet (page 2) as a built-in FPU.
How many CAN channels does the device support, and what are their message buffer configurations?
The device integrates three independent CAN 2.0B controllers: Channel 0 provides 128 message buffers (64 TX + 64 RX), while Channels 1 and 2 each provide 64 message buffers (32 TX + 32 RX). This configuration is specified in the peripheral functions section (page 2) and validated in the Product Lineup Comparison tables (pages 5–9).
Is the MB91F526KWBPMC-GS-F4K5E1 qualified for automotive use, and what temperature grade does it meet?
Yes, the MB91F526KWBPMC-GS-F4K5E1 is AEC-Q100 qualified for Grade 1 operation, supporting ambient temperatures from -40°C to +125°C. This qualification is stated in the Product Lineup Comparison tables (pages 5–9) and reinforced by its inclusion in Infineon's automotive MCU portfolio with full documentation continuity post-Cypress acquisition.
MB91F526KWBPMC-GS-F4K5E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 144-LQFP
- Series:
- FR MB91520
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- FR81S
- Core Size:
- 32-Bit Single-Core
- Speed:
- 80MHz
- Connectivity:
- CANbus, CSIO, EBI/EMI, I2C, LINbus, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 120
- Program Memory Size:
- 1.0625MB (1.0625M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 64K x 8
- RAM Size:
- 136K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 48x12b; D/A 2x8b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MB91F526KWBPMC-GS-F4K5E1 FAQ
1.How can I place an order for MB91F526KWBPMC-GS-F4K5E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MB91F526KWBPMC-GS-F4K5E1 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 MB91F526KWBPMC-GS-F4K5E1 reliable?
The price and inventory of MB91F526KWBPMC-GS-F4K5E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MB91F526KWBPMC-GS-F4K5E1 is usually 5 days.
3.What payment methods are accepted for MB91F526KWBPMC-GS-F4K5E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MB91F526KWBPMC-GS-F4K5E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MB91F526KWBPMC-GS-F4K5E1?
MB91F526KWBPMC-GS-F4K5E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MB91F526KWBPMC-GS-F4K5E1 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 MB91F526KWBPMC-GS-F4K5E1?
For technical support, including MB91F526KWBPMC-GS-F4K5E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MB91F526KWBPMC-GS-F4K5E1 requirements.
6.How does Aetrix verify that MB91F526KWBPMC-GS-F4K5E1 is sourced from the original manufacturer or authorized distributors?
All MB91F526KWBPMC-GS-F4K5E1 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 MB91F526KWBPMC-GS-F4K5E1 meets industry standards.
7.What is the process for return or replacement of MB91F526KWBPMC-GS-F4K5E1?
All MB91F526KWBPMC-GS-F4K5E1 units undergo pre-shipment inspection (PSI). If there is an issue with MB91F526KWBPMC-GS-F4K5E1, 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 MB91F526KWBPMC-GS-F4K5E1 part is unused and in its original packaging.
Return procedure for MB91F526KWBPMC-GS-F4K5E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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