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Infineon Technologies CY91F526LSBPMC-GSE1
- Part No.:
- CY91F526LSBPMC-GSE1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 176-LQFP
- Datasheet:
-
CY91F526LSBPMC-GSE1.pdf
- Description:
- IC MCU 32B 1.0625MB FLSH 176LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,235
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Product details
Overview
CY91F526LSBPMC-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, integrated FPU, MPU, and triple CAN 2.0B controllers. It operates from -40°C to +125°C and supports LIN 2.1, I²C, UART, CSIO, and 12-channel multi-function serial interfaces for body control modules.
For engineers reviewing the CY91F526LSBPMC-GSE1 datasheet, CY91F526LSBPMC-GSE1 pinout, CY91F526LSBPMC-GSE1 application, or CY91F526LSBPMC-GSE1 equivalent, key selection criteria include its 176-pin LQFP package, dual-clock supervision with CR fallback, 12-bit 48-channel ADC, 8-bit dual DAC, and hardware CRC engine for ASIL-B–capable firmware integrity verification.
Technical Context
The CY91F526LSBPMC-GSE1 implements the FR81S 32-bit RISC core with 5-stage pipeline, Harvard architecture, and IEEE 754-compliant FPU-enabling deterministic floating-point math in real-time automotive control loops. Its memory protection unit defines eight configurable privilege zones across instruction and data spaces.
Peripheral integration includes three independent CAN controllers (128/64-message buffers), a 12-channel multi-protocol serial interface with dedicated baud rate generators, and a clock supervisor that automatically switches to internal 100 kHz CR oscillator upon sub-32 kHz crystal failure-ensuring fail-safe timing continuity in safety-critical systems.
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 time) |
| Memory | 1024+64 KB program flash + 64 KB WorkFlash; 128 KB main RAM + 8 KB backup RAM |
| Analog Peripherals | 12-bit SAR ADC (48 ch, 1.4 μs conv.); dual 8-bit R-2R DAC; RTC with subclock calibration |
| Communication | 3× CAN 2.0B (up to 1 Mbps); 12× multi-protocol serial (UART/CSIO/LIN/I²C); 2× I²C (std/fast mode) |
| Timers & PWM | 16-bit × 48 PPG channels; 16/32-bit free-run/reload timers; 6-channel waveform generator |
| Power & Safety | 2.7–5.5 V operation; -40°C to +125°C TA; hardware/software watchdog; ECC on flash/RAM; MPU with 8 zones |
Pinout & Package
Package: 176-pin LQFP (24 × 24 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / Ground | Dual 5 V domain pins per power group; decoupling required per section per datasheet layout guidelines |
| XIN, XOUT | Main crystal oscillator input/output | Supports 4–16 MHz external quartz; enables PLL clock multiplication up to 80 MHz |
| EXCLK | External clock input | Accepts external clock source for system timing when crystal not used |
| RTCXIN, RTCXOUT | Sub-clock crystal interface | 32.768 kHz crystal connection for RTC; monitored by clock supervisor for failure detection |
| CRCLK | Internal CR oscillator output | 100 kHz reference used as fallback clock during main/sub oscillator fault |
| CAN0TX, CAN0RX | Channel 0 CAN transceiver interface | Differential signaling pair for CAN 2.0B bus; supports 1 Mbps with external transceiver |
| AD0–AD47 | Analog input channels | 48 dedicated ADC inputs mapped across GPIO ports; selectable sample-and-hold timing |
| DA0, DA1 | Digital-to-analog outputs | Two independent 8-bit voltage outputs for sensor simulation or actuator biasing |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE 754-compliant 32-bit arithmetic with 16-register file-enables real-time motor control algorithms without software emulation overhead |
| Memory Protection Unit (MPU) | Eight configurable access zones with privilege/user mode enforcement-supports ASIL-B partitioning of safety-critical and non-safety firmware |
| Clock supervision | Dual monitoring of main (4–16 MHz) and sub (32 kHz) oscillators with automatic CR oscillator switchover-ensures continuous RTC and timer operation during crystal faults |
| Hardware CRC engine | Dedicated peripheral generating CRC-32 checksums over flash or RAM regions-accelerates bootloader integrity checks and OTA update validation |
| Multi-protocol serial interface | 12-channel controller supporting UART, CSIO (SPI), LIN 2.1, and I²C on shared pins with FIFO buffering-reduces CPU load in gateway ECUs with mixed-bus architectures |
Applications
| Body Control Module (BCM) | Electronic Power Steering (EPS) |
|---|---|
Use Scenario: Centralized vehicle body functions including door lock actuation, lighting control, and window lift sequencing. IC Role / Device Role / Timing Role: Main MCU executing CAN-based command arbitration, PWM-driven motor control, and LIN-peripheral management. Use Value: Integrated 48-channel ADC monitors current sensors and potentiometers; triple CAN handles chassis, comfort, and infotainment bus traffic concurrently. | Use Scenario: Real-time torque assist calculation and motor phase commutation in 12 V EPS systems. IC Role / Device Role / Timing Role: Safety-aware controller running ASIL-B software with FPU-accelerated PID loops and hardware CRC-verified firmware updates. Use Value: 80 MHz deterministic execution and 128 KB message buffers enable low-latency CAN feedback processing while maintaining functional safety compliance. |
| Advanced Lighting Control | Automotive Gateway ECU |
Use Scenario: Adaptive front-lighting system (AFS) with dynamic beam shaping and LED thermal regulation. IC Role / Device Role / Timing Role: High-resolution PWM generator managing 48-channel PPG outputs for individual LED string control. Use Value: 16-bit × 48 PPG channels support precise dimming curves; built-in temperature-compensated DACs drive thermal feedback circuits. | Use Scenario: Protocol translation and message routing between CAN FD, LIN, and legacy CAN buses in zonal architectures. IC Role / Device Role / Timing Role: Multi-bus bridge with 12 serial interfaces, triple CAN controllers, and hardware CRC acceleration for secure firmware updates. Use Value: Simultaneous handling of 12 serial protocols eliminates need for external bridge ICs; ECC-protected memory ensures data integrity during high-noise bus arbitration. |
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, higher ASIL-D support, no integrated FPU; larger footprint (216-pin BGA) | Targeted at ADAS domain controllers requiring higher compute density and functional safety certification | Select RH850/F1K only when ASIL-D compliance and multi-core parallelism outweigh cost and PCB area constraints |
| S32K344 | Arm Cortex-M7, 200 MHz, 2 MB flash, 512 KB RAM; includes HSE security engine and Ethernet MAC | Designed for next-gen vehicle networks requiring secure boot, OTA, and Ethernet backbone connectivity | Choose S32K344 if Ethernet PHY integration, HSM-based secure boot, or larger memory footprint are mandatory |
Compared with RH850/F1K and S32K344, the CY91F526LSBPMC-GSE1 delivers optimal balance of CAN/LIN protocol depth, analog integration (48-channel ADC, dual DAC), and proven qualification for under-hood BCM/EPS applications-without requiring external PHYs, security accelerators, or complex multi-core toolchains.
Availability
CY91F526LSBPMC-GSE1 is available at Aetrix Electronics and suitable for automotive body control modules, electronic power steering systems, advanced lighting control units, and gateway ECUs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY91F526LSBPMC-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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and security solutions for industrial and transportation markets.
The CY91520 series-now part of Infineon's automotive microcontroller portfolio-was originally developed by Cypress to address demanding real-time control requirements in body electronics, chassis systems, and lighting applications with integrated analog peripherals and robust clock supervision.
FAQ
What is the maximum operating junction temperature for CY91F526LSBPMC-GSE1?
The device is qualified for operation from -40°C to +125°C ambient temperature, with a maximum junction temperature of +150°C under specified thermal conditions. This rating is validated per AEC-Q100 Grade 1 requirements and confirmed in the electrical characteristics table (Section 11) of the official datasheet (002-04662 Rev. *I).
Does CY91F526LSBPMC-GSE1 support CAN FD?
No. The CY91F526LSBPMC-GSE1 integrates three CAN 2.0B controllers supporting up to 1 Mbps classical CAN only. It does not implement CAN FD frame format, bit-rate switching, or enhanced payload length features. CAN FD capability requires migration to Infineon's newer AURIX™ TC3xx family or S32K3xx series.
How is the 64 KB WorkFlash memory used in this MCU?
WorkFlash is a dedicated 64 KB block of on-chip flash memory designed for data storage-not code execution-with ECC protection and wear-leveling support. It serves as non-volatile storage for calibration tables, diagnostic logs, and configuration parameters that must survive power cycles and firmware updates without requiring external EEPROM.
Is the FR81S core supported by modern IDEs and toolchains?
Yes. Infineon provides full toolchain support via ModusToolbox™ with GNU ARM Embedded Toolchain integration, including debug probe compatibility (J-Link, CMSIS-DAP), Eclipse-based IDE, and HAL libraries. Legacy Cypress tools (PSoC Creator) do not support FR81S; use Infineon's officially validated development environment for production builds.
CY91F526LSBPMC-GSE1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 176-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:
- 152
- 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 SAR; D/A 2x8b R2R
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY91F526LSBPMC-GSE1 FAQ
1.How can I place an order for CY91F526LSBPMC-GSE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526LSBPMC-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 CY91F526LSBPMC-GSE1 reliable?
The price and inventory of CY91F526LSBPMC-GSE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526LSBPMC-GSE1 is usually 5 days.
3.What payment methods are accepted for CY91F526LSBPMC-GSE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526LSBPMC-GSE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526LSBPMC-GSE1?
CY91F526LSBPMC-GSE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526LSBPMC-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 CY91F526LSBPMC-GSE1?
For technical support, including CY91F526LSBPMC-GSE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526LSBPMC-GSE1 requirements.
6.How does Aetrix verify that CY91F526LSBPMC-GSE1 is sourced from the original manufacturer or authorized distributors?
All CY91F526LSBPMC-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 CY91F526LSBPMC-GSE1 meets industry standards.
7.What is the process for return or replacement of CY91F526LSBPMC-GSE1?
All CY91F526LSBPMC-GSE1 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526LSBPMC-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 CY91F526LSBPMC-GSE1 part is unused and in its original packaging.
Return procedure for CY91F526LSBPMC-GSE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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