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Infineon Technologies MB91F526BSBPMC1-GSE2
- Part No.:
- MB91F526BSBPMC1-GSE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MB91F526BSBPMC1-GSE2.pdf
- Description:
- IC MCU 32B 1.0625MB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,699
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Product details
Overview
MB91F526BSBPMC1-GSE2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S RISC microcontroller designed for automotive powertrain and body control units. It features an 80 MHz CPU, 1024 + 64 KB program flash, 128 KB main RAM + 8 KB backup RAM, IEEE 754-compliant FPU, and triple CAN 2.0B controllers supporting up to 1 Mbps - deployed in engine control modules requiring deterministic real-time response and functional safety support.
For engineers reviewing the MB91F526BSBPMC1-GSE2 datasheet, MB91F526BSBPMC1-GSE2 pinout, MB91F526BSBPMC1-GSE2 application, or MB91F526BSBPMC1-GSE2 equivalent, key selection criteria include its 176-pin LQFP package, -40°C to +125°C operation, integrated memory protection unit (MPU), dual-clock supervisor with CR fallback, and LIN 2.1 + I²C + CSIO peripheral concurrency for multi-protocol vehicle networking.
Technical Context
The MB91F526BSBPMC1-GSE2 implements the FR81S core - a 5-stage pipelined 32-bit RISC architecture with 16×32-bit general-purpose registers, 16-bit fixed-length instructions, and hardware multiplier (signed 32-bit in 5 cycles). It supports privilege/user modes and includes an on-chip MPU with eight configurable protection areas.
Peripheral integration centers on deterministic timing: three independent CAN controllers (128/64 message buffers), 12-channel multi-function serial interface (UART/CSIO/LIN/I²C), 48-channel PPG for LED and PWM control, 12-bit ADC (48 channels, 1.4 µs conversion), and RTC with subclock calibration - all synchronized via a programmable SSCG clock generator and dual oscillation sources (4–16 MHz main + 32 kHz sub).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | FR81S 32-bit RISC, 5-stage pipeline, 80 MHz max (12.5 ns instruction cycle) |
| Memory | 1024 + 64 KB program flash + 64 KB WorkFlash; 128 KB main RAM + 8 KB backup RAM |
| FPU | IEEE 754-compliant single-precision floating-point unit with 16×32-bit registers |
| CAN Interfaces | 3 × CAN 2.0B controllers: ch.0 supports 128 msg buffers; ch.1/ch.2 support 64 each; up to 1 Mbps |
| ADC | 12-bit successive approximation ADC, 48 channels total (32 + 16), 1.4 µs conversion time |
| Package & Temp | 176-pin LQFP (24×24 mm), AEC-Q100 Grade 1 qualified (-40°C to +125°C ambient) |
| Power Supply | Single 5 V supply; internal 1.2 V core generated via on-chip voltage step-down circuit |
Pinout & Package
MB91F526BSBPMC1-GSE2 is housed in a 176-pin LQFP (24 mm × 24 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are organized across dedicated power/ground banks, 76 GPIOs (with sub-oscillator option reducing to 74), 3 CAN differential pairs, 12 serial interface channels, and dedicated debug (OCD) pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dedicated analog/digital power banks with decoupling requirements per datasheet Section 11 |
| CLKIN, CLKOUT | Main system clock input/output | Accepts 4–16 MHz crystal or external clock; drives PLL for 80 MHz core clock |
| XTAL32K, EXTAL32K | Sub-oscillator input/output | Connects 32.768 kHz crystal for RTC and low-power mode timing |
| CAN0_TX, CAN0_RX | CAN channel 0 differential interface | Direct connection to ISO 11898-compliant transceiver; supports dominant/recessive level detection |
| TXD0–TXD11, RXD0–RXD11 | Multi-function serial data I/O | Shared pins for UART/CSIO/LIN/I²C; function selected via peripheral enable registers |
| OCD_TCK, OCD_TDI, OCD_TDO, OCD_TMS | On-chip debug interface | JTAG-compatible 4-wire interface for flash programming and real-time debugging |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | Eight configurable regions enforcing privilege/user access control for both code and data space |
| Dual Clock Supervisor | Monitors main (4 MHz) and sub (32 kHz) oscillators; auto-fails over to 100 kHz CR oscillator on fault |
| LIN 2.1 Hardware Assist | Dedicated logic for synch break generation/detection, delimiter handling, and error recovery without CPU overhead |
| ECC Protection | End-to-end error correction for flash (program + WorkFlash) and RAM, enabling ASIL-B compliance |
| Low-Power Modes | Sleep/Stop/Watch/Sub RUN modes with selective peripheral retention and wake-up via CAN, RTC, or GPIO |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time fuel injection timing, spark advance calculation, and OBD-II diagnostics in gasoline direct injection systems. IC Role / Device Role / Timing Role: Primary controller executing closed-loop combustion algorithms with sub-millisecond interrupt latency and CAN-based sensor feedback. Use Value: 80 MHz deterministic execution, triple CAN for actuator/sensor/network partitioning, and ECC-protected flash ensure ASIL-B runtime integrity. | Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC in premium passenger vehicles. IC Role / Device Role / Timing Role: Hub MCU coordinating LIN slave nodes (mirror controls, seat motors) and CAN gateway functions to powertrain domain. Use Value: Integrated LIN 2.1 hardware assist reduces CPU load by >40% vs software-only stacks; 76 GPIOs support direct drive of relays and LEDs. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Interface |
Use Scenario: Gear shift scheduling, clutch pressure modulation, and torque converter lock-up control in 8-speed automatic transmissions. IC Role / Device Role / Timing Role: Safety-critical controller interfacing with hydraulic solenoids, position sensors, and vehicle speed CAN bus. Use Value: MPU-enforced memory isolation prevents firmware corruption during transient EMI events; 12-bit ADC with 48 channels enables simultaneous sampling of multiple pressure/temperature inputs. | Use Scenario: Pre-processing raw data from radar or camera sensors before forwarding to domain controller via CAN FD or Ethernet. IC Role / Device Role / Timing Role: Edge preprocessing node performing timestamp alignment, CRC validation, and protocol translation (e.g., LVDS to CAN). Use Value: Hardware CRC generator offloads checksum computation; 12-channel serial interface supports concurrent SPI (radar), I²C (EEPROM), and UART (debug) traffic. |
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/F1L | 40 MHz max CPU speed; no on-chip FPU; 1.5 MB flash; 256 KB RAM | Lacks LIN hardware assist and subclock calibration; targets cost-sensitive body electronics only | Select when lower performance and absence of floating-point math are acceptable |
| S32K144 | Cortex-M4F core; 112 MHz; 512 KB flash; 128 KB RAM; no external bus interface | ARM ecosystem tooling advantage; lacks FR81S instruction compatibility and 176-pin LQFP footprint | Select when migrating legacy ARM-based designs or requiring AUTOSAR OS certification path |
Compared with RH850/F1L and S32K144, MB91F526BSBPMC1-GSE2 delivers higher deterministic throughput at 80 MHz, native LIN 2.1 hardware acceleration, and pin-compatible scalability within the CY91520 family - making it optimal for reusing existing FR-family firmware and meeting tight timing budgets in powertrain control.
Availability
MB91F526BSBPMC1-GSE2 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body control systems requiring stable component supply across extended automotive lifecycles (15+ years).
Supply support for MB91F526BSBPMC1-GSE2 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 German semiconductor leader specializing in power management, automotive MCUs, and security solutions, with global manufacturing and automotive qualification expertise.
The CY91520 series - now part of Infineon's automotive microcontroller portfolio - was originally developed by Cypress to deliver high-integrity, real-time control for powertrain and chassis systems using the FR81S architecture and AEC-Q100-compliant silicon.
FAQ
What is the maximum operating frequency and how is it achieved?
The MB91F526BSBPMC1-GSE2 achieves a maximum operating frequency of 80 MHz using its on-chip PLL with a 4.0 MHz crystal input multiplied by 20. This configuration requires proper PCB layout for the main oscillator circuit and adherence to power supply decoupling guidelines specified in Section 11 of the datasheet to maintain signal integrity and jitter performance.
Does this MCU support functional safety standards like ISO 26262?
Yes - the MB91F526BSBPMC1-GSE2 includes hardware features required for ASIL-B compliance: ECC-protected flash and RAM, memory protection unit (MPU), clock supervisor with failover, and lockstep-capable peripherals. While the device itself is not certified, Infineon provides safety manuals and FMEDA reports to support customer-level ISO 26262 development.
Can the 176-pin LQFP package be used with standard reflow profiles?
Yes - the MB91F526BSBPMC1-GSE2 uses JEDEC-standard LQFP packaging compatible with IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) and peak reflow temperatures up to 260°C. Pre-bake is required if exposed to ambient >30°C/60% RH for more than 168 hours; full profile details are in Infineon's package reliability report PN 002-04662 Rev. *I, Section 17.
How many CAN message buffers are allocated per channel?
Channel 0 provides 128 combined transmit/receive message buffers, while channels 1 and 2 each provide 64 buffers. Buffer allocation is managed via the CAN Message Object RAM (MORAM) and configured through the CAN control registers - enabling flexible prioritization and filtering without CPU intervention during high-throughput CAN traffic.
MB91F526BSBPMC1-GSE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-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, I2C, LINbus, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 44
- 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 26x12b; D/A 1x8b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MB91F526BSBPMC1-GSE2 FAQ
1.How can I place an order for MB91F526BSBPMC1-GSE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MB91F526BSBPMC1-GSE2 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 MB91F526BSBPMC1-GSE2 reliable?
The price and inventory of MB91F526BSBPMC1-GSE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MB91F526BSBPMC1-GSE2 is usually 5 days.
3.What payment methods are accepted for MB91F526BSBPMC1-GSE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MB91F526BSBPMC1-GSE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MB91F526BSBPMC1-GSE2?
MB91F526BSBPMC1-GSE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MB91F526BSBPMC1-GSE2 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 MB91F526BSBPMC1-GSE2?
For technical support, including MB91F526BSBPMC1-GSE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MB91F526BSBPMC1-GSE2 requirements.
6.How does Aetrix verify that MB91F526BSBPMC1-GSE2 is sourced from the original manufacturer or authorized distributors?
All MB91F526BSBPMC1-GSE2 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 MB91F526BSBPMC1-GSE2 meets industry standards.
7.What is the process for return or replacement of MB91F526BSBPMC1-GSE2?
All MB91F526BSBPMC1-GSE2 units undergo pre-shipment inspection (PSI). If there is an issue with MB91F526BSBPMC1-GSE2, 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 MB91F526BSBPMC1-GSE2 part is unused and in its original packaging.
Return procedure for MB91F526BSBPMC1-GSE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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