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Infineon Technologies CY91F526FSCPMC-GSE2
- Part No.:
- CY91F526FSCPMC-GSE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY91F526FSCPMC-GSE2.pdf
- Description:
- IC MCU 32B 1.0625MB FLSH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,585
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Product details
Overview
CY91F526FSCPMC-GSE2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S automotive microcontroller with 1024 + 64 KB program flash, 128 KB main RAM + 8 KB backup RAM, and integrated CAN 2.0B controllers (3 channels, up to 1 Mbps). It features IEEE 754-compliant FPU, memory protection unit (MPU), and operates from -40 °C to +125 °C for engine control and body electronics applications.
For engineers reviewing the CY91F526FSCPMC-GSE2 datasheet, CY91F526FSCPMC-GSE2 pinout, CY91F526FSCPMC-GSE2 application, or CY91F526FSCPMC-GSE2 equivalent, this page delivers verified technical context, validated pin functions, real-world automotive use cases, and confirmed alternative MCUs with documented functional alignment and package compatibility.
Technical Context
The CY91F526FSCPMC-GSE2 implements the FR81S 32-bit RISC core with 5-stage pipeline, 80 MHz max operation (via PLL ×20 from 4 MHz crystal), and Harvard architecture enabling concurrent instruction fetch and data access. It supports 16 priority-level interrupts with 6-cycle latency and includes built-in MPU with eight configurable protection areas.
Peripheral integration includes three independent CAN controllers (128/64-message buffers per channel), 12-channel multi-function serial interface supporting UART/LIN/CSIO/I²C, 48-channel PPG, 12-bit A/D converter (48 ch total), and dual 8-bit D/A converters - all operating under 2.7–5.5 V supply with internal 1.2 V regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | FR81S 32-bit RISC, 5-stage pipeline, 80 MHz max (12.5 ns min instruction cycle) |
| Flash Memory | 1024 + 64 KB program flash + 64 KB WorkFlash - enables secure firmware updates and parameter storage |
| RAM | 128 KB main RAM + 8 KB battery-backed RAM - supports real-time task stacks and RTC-critical data retention |
| CAN Interfaces | 3× CAN 2.0B controllers: ch.0 supports 128 msg buffers; ch.1/ch.2 support 64 msg buffers each - meets ASAM MCD-2 MC requirements for multi-node diagnostics |
| A/D Converter | 12-bit successive approximation, 48 channels total (32 + 16), 1.4 μs conversion time - suitable for high-speed sensor sampling in powertrain feedback loops |
| Operating Temp | -40 °C to +125 °C ambient - qualified for under-hood automotive deployment per AEC-Q100 Grade 1 |
| Power Supply | 2.7–5.5 V single supply; internal 1.2 V core rail generated on-chip - eliminates need for external LDO in 5 V systems |
Pinout & Package
Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dedicated 5 V supply pins with decoupling requirement - ensures stable core voltage under transient load |
| XTAL1, XTAL2 | Main oscillator input/output | 4–16 MHz crystal connection for primary clock source - enables precise timing for CAN bit rate generation |
| CLKOUT | Clock output | Configurable output of internal PLL or sub-clock - used for synchronizing external peripherals or debug clocks |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up - initiates full system initialization including flash ECC check and MPU reload |
| CAN0_TX, CAN0_RX | CAN channel 0 differential signal pair | Direct connection to external CAN transceiver - supports ISO 11898-2 compliant physical layer at up to 1 Mbps |
| AD00–AD47 | Analog input channels | 48 dedicated A/D input pins with programmable gain and sample-and-hold - enables simultaneous sampling across multiple engine sensors |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE 754-compliant 32-bit FPU with 16 registers - accelerates motor control algorithms and sensor fusion without software emulation overhead |
| Memory Protection Unit (MPU) | Eight configurable protection regions with privilege/user mode access control - enforces ASIL-B software partitioning for safety-critical tasks |
| Real-time clock (RTC) | Sub-clock (32 kHz) or main-clock driven RTC with calibration register - maintains accurate timekeeping during stop mode with <1 μA current draw |
| Low-power modes | Sleep, Stop, Watch, Sub RUN - Stop mode shuts down CPU and flash while retaining RAM and RTC, reducing current to 10 μA typical |
| ECC support | End-to-end ECC on flash (program/data) and RAM - detects and corrects single-bit errors, meeting ISO 26262 ASIL-B fault coverage requirements |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
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 controller executing closed-loop PID algorithms with sub-microsecond interrupt response and deterministic CAN message scheduling. Use Value: 80 MHz FR81S core + 48-channel A/D + 3× CAN enables synchronized acquisition of crank/cam position, O₂, MAP, and throttle signals within one control cycle. |
Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC in premium vehicle platforms. IC Role / Device Role / Timing Role: System coordinator interfacing with LIN slaves (door modules, seat controls) and CAN backbone (instrument cluster, gateway). Use Value: Integrated LIN 2.1 master + 12-channel serial interface + 76 GPIOs reduce external logic and simplify wiring harness topology. |
| 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 domain controller. IC Role / Device Role / Timing Role: Edge-processing node performing time-synchronized timestamping, filtering, and CAN FD packet assembly. Use Value: Hardware CRC generator + ECC RAM + 128-message CAN buffer ensures integrity and low-latency delivery of safety-critical sensor metadata. |
Use Scenario: Torque assist calculation and motor phase commutation in brushless DC steering motors. IC Role / Device Role / Timing Role: Real-time motion controller with PPG-driven PWM outputs, analog current sensing, and fault-safe shutdown via NMI. Use Value: 48-channel PPG + 12-bit A/D + FPU enables field-oriented control (FOC) execution at 10 kHz loop rate with <2 μs jitter. |
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 RXv2 core, 120 MHz, 1.5 MB flash, no integrated FPU - requires software floating-point library | Lacks hardware FPU and WorkFlash; higher flash density but fewer CAN channels (2× CAN FD) | Preferred when CAN FD and larger code footprint outweigh need for real-time floating-point math |
| S32K144 | ARM Cortex-M4F core, 112 MHz, 512 KB flash, integrated FPU, 2× CAN FD - different ISA and toolchain ecosystem | Supports CAN FD but lacks sub-clock RTC calibration and WorkFlash architecture | Chosen for AUTOSAR Classic compliance and broad middleware support over FR81S-specific RTOS porting effort |
Compared with RH850/F1K and S32K144, the CY91F526FSCPMC-GSE2 offers unique advantages in deterministic real-time performance (6-cycle interrupt latency), on-chip WorkFlash for runtime parameter storage, and sub-clock RTC calibration - critical for cost-sensitive engine control where CAN FD is not required.
Availability
CY91F526FSCPMC-GSE2 is available at Aetrix Electronics and suitable for engine control units, body control modules, and electric power steering systems requiring stable component supply across automotive production lifecycles.
Supply support for CY91F526FSCPMC-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 global semiconductor leader headquartered in Munich, Germany, specializing in power systems, automotive ICs, and security solutions.
This device belongs to the CY91520 series - Infineon's automotive-qualified 32-bit microcontroller family built on 90 nm CMOS, designed specifically for ASIL-B compliant powertrain and chassis control applications.
FAQ
What is the maximum operating frequency and how is it achieved?
The CY91F526FSCPMC-GSE2 achieves 80 MHz maximum operation using its on-chip PLL with multiplication factor up to ×20, driven by an external 4.0 MHz crystal. This configuration yields a 12.5 ns minimum instruction execution time and supports deterministic real-time behavior required for automotive control loops.
Does this MCU support AEC-Q100 qualification and what grade applies?
Yes, the CY91F526FSCPMC-GSE2 is AEC-Q100 qualified for Grade 1 (-40 °C to +125 °C), verified through stress testing including HTOL, TCT, and ESD. Its design includes ECC on flash and RAM, MPU, and watchdog timers - all aligned with ISO 26262 ASIL-B requirements for automotive safety applications.
How many CAN interfaces does it have and what are their message buffer configurations?
It integrates three independent CAN 2.0B controllers: Channel 0 provides 128 message buffers (transmit/receive), while Channels 1 and 2 each provide 64 message buffers. All support bit rates up to 1 Mbps and include dedicated message object RAM with acceptance filtering and FIFO modes.
Is there hardware support for floating-point arithmetic and what standard does it follow?
Yes, the device includes a fully integrated IEEE 754-compliant single-precision floating-point unit (FPU) with 16 × 32-bit registers. It executes 32-bit multiply-add operations in a single cycle and supports denormals, exceptions, and rounding modes - essential for motor control and sensor fusion without software library overhead.
CY91F526FSCPMC-GSE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-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:
- 76
- 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 37x12b; D/A 2x8b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY91F526FSCPMC-GSE2 FAQ
1.How can I place an order for CY91F526FSCPMC-GSE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526FSCPMC-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 CY91F526FSCPMC-GSE2 reliable?
The price and inventory of CY91F526FSCPMC-GSE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526FSCPMC-GSE2 is usually 5 days.
3.What payment methods are accepted for CY91F526FSCPMC-GSE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526FSCPMC-GSE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526FSCPMC-GSE2?
CY91F526FSCPMC-GSE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526FSCPMC-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 CY91F526FSCPMC-GSE2?
For technical support, including CY91F526FSCPMC-GSE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526FSCPMC-GSE2 requirements.
6.How does Aetrix verify that CY91F526FSCPMC-GSE2 is sourced from the original manufacturer or authorized distributors?
All CY91F526FSCPMC-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 CY91F526FSCPMC-GSE2 meets industry standards.
7.What is the process for return or replacement of CY91F526FSCPMC-GSE2?
All CY91F526FSCPMC-GSE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526FSCPMC-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 CY91F526FSCPMC-GSE2 part is unused and in its original packaging.
Return procedure for CY91F526FSCPMC-GSE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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