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Infineon Technologies MB91F523JSEPMC-GTE1
- Part No.:
- MB91F523JSEPMC-GTE1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 120-LQFP
- Datasheet:
-
MB91F523JSEPMC-GTE1.pdf
- Description:
- IC MCU 32BIT 448KB 120LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,646
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Product details
Overview
MB91F523JSEPMC-GTE1 from Cypress Semiconductor is a 32-bit FR81S RISC microcontroller designed for automotive control units requiring high-integrity real-time operation. It features an 80 MHz CPU, 384 KB + 64 KB program flash, 48 KB main RAM + 8 KB backup RAM, integrated CAN (3 channels), LIN (12-channel multi-serial), and IEEE 754-compliant FPU - deployed in engine control modules and body domain controllers.
For engineers reviewing the MB91F523JSEPMC-GTE1 datasheet, MB91F523JSEPMC-GTE1 pinout, MB91F523JSEPMC-GTE1 application, or MB91F523JSEPMC-GTE1 equivalent, key selection criteria include its 176-pin LQFP package, -40°C to +125°C operating range, dual-clock supervision with CR oscillator fallback, and hardware memory protection unit (MPU) supporting ASIL-B–capable system partitioning.
Technical Context
The MB91F523JSEPMC-GTE1 implements the FR81S core with 5-stage pipeline, Harvard architecture, and instruction compatibility with the FR family. It integrates on-chip PLL clock multiplication (1×–20×), sub-oscillator (32 kHz) support with RTC calibration, and dual-clock supervisor that switches to internal 100 kHz CR oscillator upon main/sub crystal failure.
Peripheral integration includes three independent CAN 2.0B controllers (1 × 128-message, 2 × 64-message buffers), twelve multi-function serial interfaces (UART/LIN/CSIO/I²C), and a 12-bit ADC with up to 48 channels and 1.4 µs conversion time - all accessible via configurable I/O relocation and managed by a 16-channel DMA controller.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | FR81S 32-bit RISC with 5-stage pipeline, 80 MHz max frequency (12.5 ns instruction cycle) |
| Memory | 384 KB + 64 KB program flash, 64 KB WorkFlash, 48 KB main RAM + 8 KB backup RAM |
| FPU | IEEE 754-compliant single-precision floating-point unit with 32-bit × 16 register file |
| CAN Interface | 3 independent CAN 2.0B controllers: ch.0 supports 128 message buffers; ch.1/ch.2 support 64 each |
| ADC | 12-bit successive approximation ADC, up to 48 channels, 1.4 µs conversion time |
| Operating Temp | -40°C to +125°C ambient temperature, qualified for automotive AEC-Q100 Grade 1 |
| Power Supply | Single 5 V supply; internal 1.2 V core voltage generated via on-chip step-down regulator |
Pinout & Package
MB91F523JSEPMC-GTE1 is housed in a 176-pin LQFP (24 mm × 24 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions include dedicated CANH/CANL differential pairs per channel, multiplexed UART/LIN/CSIO/I²C signal lines, and GPIOs supporting I/O relocation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 5 V power domains with separate analog/digital ground pins for noise isolation |
| XTAL1/XTAL2 | Main crystal oscillator input/output | Supports 4–16 MHz external quartz; enables PLL-based 80 MHz system clock |
| OSC32K | Sub-oscillator input | Connects to 32.768 kHz crystal for RTC and low-power mode timing |
| CAN0H/CAN0L | Channel 0 CAN differential bus | Direct connection to ISO 11898-compliant transceiver; supports up to 1 Mbps |
| CRCLK | Internal CR oscillator output | Provides 100 kHz clock source for fail-safe operation when crystal fails |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; asserted during power-on, LVD, or watchdog timeout |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | Eight configurable protection areas with privilege/user mode access control for ASIL-B partitioning |
| Multi-Serial Interface | 12-channel flexible serial block supporting UART, LIN 2.1, SPI, and I²C (standard/fast mode) with 64-step FIFOs |
| Real-Time Clock (RTC) | Day/hour/min/sec counter with subclock ratio calibration to maintain ±1 ppm accuracy over temperature |
| Low-Power Modes | Sleep, Stop, Watch, and Sub RUN modes with selective peripheral retention and wake-up via CAN/LIN/external interrupt |
| Hardware Watchdog | Dedicated watchdog timer with windowed operation and software-clearable timeout range for functional safety compliance |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time combustion timing, fuel injection pulse width, and knock detection in gasoline/diesel engines. IC Role / Device Role / Timing Role: Primary control MCU executing deterministic control loops at ≤1 ms intervals with CAN-based sensor/actuator communication. Use Value: Integrated FPU enables precise air-fuel ratio calculation; dual-clock supervision ensures runtime continuity during oscillator fault. | Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC across vehicle zones. IC Role / Device Role / Timing Role: Domain controller interfacing with LIN slave nodes (e.g., mirror motors, seat position sensors) and CAN backbone. Use Value: Twelve serial channels allow concurrent LIN master operation on multiple buses; 48 GPIOs support direct switch/sensor inputs without external expanders. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Electric Power Steering (EPS) Controller |
Use Scenario: Aggregation and preprocessing of radar, camera, and ultrasonic sensor data before forwarding to central ADAS ECU. IC Role / Device Role / Timing Role: Edge-processing node performing time-critical filtering and timestamp synchronization using hardware timers and PPG. Use Value: 16-bit PPG with 48 channels drives LED strobes for time-of-flight sensors; CRC engine validates sensor frame integrity. | Use Scenario: Closed-loop torque assist control with motor phase current sensing and steering angle feedback. IC Role / Device Role / Timing Role: Safety-critical actuator controller with ASIL-B software partitioning enforced by MPU and ECC-protected memory. Use Value: ECC on flash/RAM prevents silent data corruption; hardware watchdog with windowed timeout meets ISO 26262 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RH850/F1L | 32-bit RXv2 core, 120 MHz max, 1.5 MB flash, no integrated FPU, JTAG-only debug | Lacks IEEE 754 FPU and LIN protocol hard assist; requires external precision oscillator for RTC | Preferred where higher flash density and CAN FD support outweigh need for floating-point math acceleration |
| S32K144 | Cortex-M4F core, 112 MHz, 512 KB flash, integrated FPU, ARM TrustZone, no PPG waveform generator | Uses ARM ecosystem toolchain; lacks dedicated PPG for LED timing and has no built-in CR oscillator fallback | Chosen for NXP S32 Design Studio compatibility and AUTOSAR OS support, but requires external clock supervisor |
Compared with RH850/F1L and S32K144, MB91F523JSEPMC-GTE1 uniquely combines FR81S deterministic execution, on-die CR oscillator failover, and LIN 2.1 hard assist - making it optimal for cost-sensitive, safety-aware body electronics where floating-point computation and oscillator resilience are critical.
Availability
MB91F523JSEPMC-GTE1 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS sensor hubs, and electric power steering systems requiring stable component supply under AEC-Q100 qualification.
Supply support for MB91F523JSEPMC-GTE1 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
Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability semiconductor solutions for automotive, industrial, and IoT markets, with emphasis on functional safety and long-term supply stability.
The MB91520 Series targets automotive domain controllers needing ASIL-B–capable processing, integrated communication peripherals, and robust clock supervision - specifically engineered for body electronics and powertrain subsystems.
FAQ
What is the maximum operating frequency and how is it achieved?
The MB91F523JSEPMC-GTE1 achieves 80 MHz maximum CPU frequency using its on-chip PLL with programmable multiplication factor (1× to 20×). With a 4.0 MHz external crystal connected to XTAL1/XTAL2, the PLL multiplies the input by 20 to generate the 80 MHz system clock. The minimum instruction execution time is 12.5 ns, confirmed in the electrical characteristics table (Page 133, Rev. *F).
Does this MCU support LIN protocol, and which revision is implemented?
Yes, the MB91F523JSEPMC-GTE1 supports LIN protocol Revision 2.1 in both master and slave modes through its multi-function serial interface. It provides hardware-level synch break generation/detection, framing error monitoring, and dedicated baud rate generator - all documented in Section 1.3.7 (Page 2 of 280) and verified in the LIN-specific functional description (Page 22).
What safety features are included for automotive ASIL-B compliance?
This MCU includes hardware memory protection unit (MPU) with eight configurable regions, ECC on flash and RAM, dual-clock supervision with CR oscillator fallback, hardware watchdog with windowed timeout, and NMI support - all contributing to ASIL-B capability. These features are detailed in Sections 1.3.12 (MPU), 1.3.14 (ECC), and 1.3.15 (Clock Supervisor) of the datasheet.
Is there a built-in oscillator for fail-safe operation if the main crystal fails?
Yes, the MB91F523JSEPMC-GTE1 integrates a 100 kHz CR (Capacitor-Resistor) oscillator that automatically replaces the main or sub-oscillator upon detection of crystal failure. This behavior is controlled by the Clock Supervisor module and is explicitly described in Section 1.3.15 (Page 3) as a hardware-managed switchover with no software intervention required.
MB91F523JSEPMC-GTE1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 120-LQFP
- Series:
- FR MB91520
- Packaging:
- Bulk
- 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:
- 96
- Program Memory Size:
- 448KB (448K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 64K x 8
- RAM Size:
- 56K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 42x12b; D/A 2x8b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MB91F523JSEPMC-GTE1 FAQ
1.How can I place an order for MB91F523JSEPMC-GTE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MB91F523JSEPMC-GTE1 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 MB91F523JSEPMC-GTE1 reliable?
The price and inventory of MB91F523JSEPMC-GTE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MB91F523JSEPMC-GTE1 is usually 5 days.
3.What payment methods are accepted for MB91F523JSEPMC-GTE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MB91F523JSEPMC-GTE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MB91F523JSEPMC-GTE1?
MB91F523JSEPMC-GTE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MB91F523JSEPMC-GTE1 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 MB91F523JSEPMC-GTE1?
For technical support, including MB91F523JSEPMC-GTE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MB91F523JSEPMC-GTE1 requirements.
6.How does Aetrix verify that MB91F523JSEPMC-GTE1 is sourced from the original manufacturer or authorized distributors?
All MB91F523JSEPMC-GTE1 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 MB91F523JSEPMC-GTE1 meets industry standards.
7.What is the process for return or replacement of MB91F523JSEPMC-GTE1?
All MB91F523JSEPMC-GTE1 units undergo pre-shipment inspection (PSI). If there is an issue with MB91F523JSEPMC-GTE1, 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 MB91F523JSEPMC-GTE1 part is unused and in its original packaging.
Return procedure for MB91F523JSEPMC-GTE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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