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Infineon Technologies CY91F526BSBPMC1-GSE1
- Part No.:
- CY91F526BSBPMC1-GSE1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY91F526BSBPMC1-GSE1.pdf
- Description:
- IC MCU 32B 1.0625MB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,380
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Product details
Overview
CY91F526BSBPMC1-GSE1 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, 80 MHz max CPU frequency, IEEE 754-compliant FPU, and integrated CAN 2.0B controllers (3 channels, up to 1 Mbps). It targets engine control units and body domain controllers requiring ASIL-B capable timing, memory protection, and real-time I/O.
For engineers reviewing the CY91F526BSBPMC1-GSE1 datasheet, CY91F526BSBPMC1-GSE1 pinout, CY91F526BSBPMC1-GSE1 application, or CY91F526BSBPMC1-GSE1 equivalent, key selection criteria include its 176-pin LQFP package, dual-clock supervision with CR fallback, 48-channel 12-bit ADC (1.4 μs conversion), LIN 2.1 support, and hardware watchdog with configurable clearing window.
Technical Context
The CY91F526BSBPMC1-GSE1 implements the FR81S 32-bit RISC core with 5-stage pipeline, Harvard architecture, and MPU-enforced privilege/user mode separation across eight configurable memory regions. It integrates three independent CAN controllers-two with 64-message buffers and one with 128-message buffers-each supporting bit rates up to 1 Mbps and error confinement.
Its peripheral set includes twelve multi-function serial interfaces (UART/CSIO/LIN/I²C), a 48-channel PPG for LED and motor control, RTC with subclock calibration, and dual 16-bit base timers usable in cascade for 32-bit operation. Power management supports Sleep, Stop, Watch, and Sub RUN modes with LVD reset at 2.8 V ±8% on the external supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | FR81S 32-bit RISC with 5-stage pipeline, 16 general-purpose registers, and IEEE 754 FPU for deterministic floating-point math in control loops. |
| Max Clock Speed | 80 MHz (12.5 ns instruction cycle), achieved via PLL multiplication of 4–16 MHz main oscillator by factor 1–20. |
| Memory | 1024+64 KB program flash with ECC, 64 KB WorkFlash, 128 KB main RAM + 8 KB battery-backed RAM, all protected by MPU. |
| Analog Peripherals | 48-channel 12-bit SAR ADC (1.4 μs conversion), 2× 8-bit R-2R DAC, and real-time clock with subclock ratio correction. |
| Communication | 3× CAN 2.0B controllers (1×128 msg, 2×64 msg), 12× multi-protocol serial interfaces (LIN 2.1, UART, CSIO, I²C), and 16× I²C-open-drain ports. |
| Package & Environment | 176-pin LQFP (24×24 mm, 0.5 mm pitch), rated for -40°C to +125°C ambient, powered by 2.7–5.5 V with internal 1.2 V regulator. |
Pinout & Package
Package: 176-pin LQFP (24 mm × 24 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 5 V supply domains with dedicated analog/digital grounds; internal voltage regulator generates 1.2 V core rail. |
| XIN, XOUT | Main crystal oscillator input/output | Supports 4–16 MHz quartz; drives PLL for system clock generation and clock supervision circuitry. |
| EXCLK | External clock input | Accepts external clock source (e.g., from another MCU or oscillator) for synchronous operation or fallback timing. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; asserted during power-on, LVD, or watchdog timeout events. |
| CAN0_TX, CAN0_RX | CAN channel 0 differential signal pair | Direct connection to external CAN transceiver; supports 1 Mbps bit rate with built-in bus-off recovery logic. |
| AD0–AD47 | Analog input channels | 48 dedicated pins mapped to 12-bit SAR ADC; configurable as GPIO when not used for analog acquisition. |
| DA0, DA1 | Digital-to-analog outputs | Two 8-bit R-2R DAC outputs with internal reference; used for sensor biasing or analog actuator control. |
| RTC_CLK | Real-time clock input | Accepts 32.768 kHz sub-oscillator signal; enables calendar timekeeping and wake-from-Stop mode via alarm interrupt. |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | Eight programmable regions with privilege/user access control, enabling secure partitioning of firmware, bootloader, and application code. |
| Multi-Protocol Serial Interface | Twelve independent channels supporting UART, SPI, LIN 2.1, and I²C-each with 64-deep TX/RX FIFOs and DMA transfer capability. |
| Peripheral Pin Relocation | Runtime reassignment of peripheral functions (e.g., UART, CAN, ADC) to alternate GPIO pins without hardware change or PCB redesign. |
| Clock Supervision with Fallback | Dual monitoring of main (4–16 MHz) and sub (32 kHz) oscillators; automatic switch to 100 kHz CR oscillator upon failure detection. |
| Automotive-Grade Safety Support | Built-in ECC for flash and RAM, CRC generator, TPU (Timing Protection Unit), and NMI-capable watchdog with software-clear window. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time combustion timing, fuel injection pulse width calculation, and OBD-II diagnostics in gasoline/diesel powertrains. IC Role / Device Role / Timing Role: Primary controller executing closed-loop PID algorithms using FPU-accelerated math and sampling ADC inputs at ≤10 kHz. Use Value: 80 MHz deterministic execution, 48-channel ADC with 1.4 μs conversion, and CAN message buffering enable sub-millisecond control loop latency. | Use Scenario: Centralized management of lighting, door locks, window lifts, and HVAC in passenger vehicles. IC Role / Device Role / Timing Role: Domain controller interfacing with LIN slaves (door modules, seat controls) and CAN backbone via three independent CAN channels. Use Value: Integrated LIN 2.1 and CAN controllers eliminate external protocol translators; 128-message buffer on CAN0 supports high-priority diagnostic traffic without CPU intervention. |
| 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-synchronized sampling, FFT preprocessing, and CAN-based data streaming. Use Value: Hardware CRC and ECC ensure data integrity across noisy vehicle networks; 128 KB RAM accommodates real-time buffer storage for multi-sensor fusion. | Use Scenario: Torque assist computation, motor phase control, and fault response in brushless DC steering motors. IC Role / Device Role / Timing Role: Safety-critical controller implementing ASIL-B compliant torque path with redundant ADC sampling and watchdog supervision. Use Value: Dual 12-bit ADC units (32+16 ch) allow simultaneous current sensing and position feedback; MPU enforces isolation between safety and non-safety software partitions. |
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 | 400 MHz dual-core, 2 MB flash, no integrated FPU; uses G3KH core with lockstep option. | Targets higher ASIL-D systems; lacks native LIN 2.1 but adds CAN FD and Ethernet AVB. | Select for full ISO 26262 ASIL-D compliance where functional safety certification depth outweighs need for embedded FPU. |
| S32K144 | ARM Cortex-M4F core, 512 KB flash, 128 KB RAM, 1× CAN FD, 1× CAN 2.0, no PPG or waveform generator. | Optimized for entry-level body electronics; supports SAE J2602 but lacks subclock calibration and CR oscillator fallback. | Select for cost-sensitive BCM designs requiring AUTOSAR compatibility and toolchain maturity over specialized timer peripherals. |
Compared with RH850/F1K and S32K144, the CY91F526BSBPMC1-GSE1 delivers unique integration of FR81S deterministic execution, LIN 2.1 + CAN 2.0B coexistence, subclock calibration, and 48-channel PPG-making it optimal for mid-tier automotive controllers where mixed-signal precision and protocol flexibility are prioritized over raw compute throughput or CAN FD bandwidth.
Availability
CY91F526BSBPMC1-GSE1 is available at Aetrix Electronics and suitable for engine control units, body control modules, electric power steering systems, and ADAS sensor hubs requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CY91F526BSBPMC1-GSE1 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 manufacturer specializing in power management, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure.
The CY91520 series belongs to Infineon's legacy automotive MCU portfolio inherited from Cypress, designed specifically for ASIL-B compliant body, chassis, and powertrain applications demanding high analog integration, real-time determinism, and robust clock supervision.
FAQ
What is the maximum operating temperature range for CY91F526BSBPMC1-GSE1?
The CY91F526BSBPMC1-GSE1 is qualified for operation from -40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements. This rating applies to the full functional specification including flash programming, ADC accuracy, and CAN communication timing, validated under continuous thermal stress conditions per Infineon's automotive qualification protocol.
Does CY91F526BSBPMC1-GSE1 support CAN FD?
No, CY91F526BSBPMC1-GSE1 supports only CAN 2.0B protocol with bit rates up to 1 Mbps. It implements three independent CAN controllers compliant with ISO 11898-1:2015, each featuring message objects with acceptance filtering, transmit/receive buffering, and error confinement-but no CAN FD frame format or variable data length support.
How is the 100 kHz CR oscillator used in system fail-safe operation?
The integrated 100 kHz CR oscillator serves as a guaranteed clock source during main or sub-oscillator failure. When clock supervision detects abnormality (e.g., quartz damage or frequency drift), the device automatically switches to the CR oscillator, maintains basic functionality-including watchdog operation and RTC tick generation-and asserts an interrupt to initiate safe state transition or diagnostic logging.
Can the CY91F526BSBPMC1-GSE1 execute code directly from RAM?
Yes, the FR81S core supports XIP (execute-in-place) from RAM via its Harvard architecture. Code loaded into main RAM (up to 128 KB) can be executed with full pipeline efficiency and interrupt latency matching flash execution, enabling dynamic firmware updates, secure boot verification routines, and real-time algorithm patching without external memory interface.
CY91F526BSBPMC1-GSE1 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:
CY91F526BSBPMC1-GSE1 FAQ
1.How can I place an order for CY91F526BSBPMC1-GSE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526BSBPMC1-GSE1 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 CY91F526BSBPMC1-GSE1 reliable?
The price and inventory of CY91F526BSBPMC1-GSE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526BSBPMC1-GSE1 is usually 5 days.
3.What payment methods are accepted for CY91F526BSBPMC1-GSE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526BSBPMC1-GSE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526BSBPMC1-GSE1?
CY91F526BSBPMC1-GSE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526BSBPMC1-GSE1 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 CY91F526BSBPMC1-GSE1?
For technical support, including CY91F526BSBPMC1-GSE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526BSBPMC1-GSE1 requirements.
6.How does Aetrix verify that CY91F526BSBPMC1-GSE1 is sourced from the original manufacturer or authorized distributors?
All CY91F526BSBPMC1-GSE1 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 CY91F526BSBPMC1-GSE1 meets industry standards.
7.What is the process for return or replacement of CY91F526BSBPMC1-GSE1?
All CY91F526BSBPMC1-GSE1 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526BSBPMC1-GSE1, 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 CY91F526BSBPMC1-GSE1 part is unused and in its original packaging.
Return procedure for CY91F526BSBPMC1-GSE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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