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Infineon Technologies CY91F526BWBPMC1-GSE1
- Part No.:
- CY91F526BWBPMC1-GSE1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY91F526BWBPMC1-GSE1.pdf
- Description:
- IC MCU 32B 1.0625MB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,412
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Product details
Overview
CY91F526BWBPMC1-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 CY91F526BWBPMC1-GSE1 datasheet, CY91F526BWBPMC1-GSE1 pinout, CY91F526BWBPMC1-GSE1 application, or CY91F526BWBPMC1-GSE1 equivalent, key selection criteria include its 176-pin LQFP package, dual-clock supervision with CR oscillator fallback, 12-bit 48-channel ADC with 1.4 µs conversion, hardware watchdog, and ECC-protected Flash/RAM for ASIL-B–capable automotive systems.
Technical Context
The CY91F526BWBPMC1-GSE1 implements the FR81S 32-bit RISC core with 5-stage pipeline, Harvard architecture, and instruction compatibility with the FR family. It integrates a 128-message CAN controller (ch.0) plus two 64-message CAN channels (ch.1/ch.2), all supporting up to 1 Mbps and ISO 11898-1 compliance.
Its clock system includes main oscillation (4–16 MHz), sub-oscillation (32 kHz), on-chip PLL (×1–20), and a 100 kHz CR oscillator with automatic failover. The device uses CMOS 90 nm process, 5 V supply with internal 1.2 V regulator, and supports Sleep/Stop/Watch/Sub RUN low-power modes with LVD reset at 2.8 V ±8%.
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 |
| ADC | 12-bit successive approximation, 48 channels total, 1.4 µs conversion time |
| CAN Interfaces | 3 independent CAN 2.0B controllers: ch.0 (128 msg buffers), ch.1/ch.2 (64 msg each), up to 1 Mbps |
| Serial Peripherals | 12-channel multi-function interface (UART/CSIO/LIN/I²C), including LIN 2.1 support with synch break generation |
| Operating Range | -40°C to +125°C ambient temperature, 2.7–5.5 V supply, ASIL-B capable per functional safety design |
| Security & Reliability | MPU with 8 protection areas, ECC on Flash and RAM, CRC generator, TPU, flash security lock |
Pinout & Package
Package: 176-pin LQFP (LQD176), 24 × 24 mm, 0.5 mm pitch, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | 5 V main supply pins with dedicated decoupling requirements per datasheet layout guidelines |
| XTAL1/XTAL2 | Main crystal oscillator input/output | Supports 4–16 MHz external quartz; enables PLL clock multiplication for 80 MHz core operation |
| RTC_XIN/RTC_XOUT | Sub-clock oscillator terminals | Connects 32.768 kHz crystal for RTC and low-power mode timing; monitored by Clock Supervisor |
| CAN0_TX/CAN0_RX | CAN channel 0 differential signal pair | Direct connection to external CAN transceiver; supports high-speed (up to 1 Mbps) and fault-tolerant bus operation |
| AD0–AD47 | Analog input channels | 48 dedicated ADC input pins mapped across multiple ports; share GPIO functionality when not used for analog acquisition |
| TRD0–TRD15 | Test/debug interface | OCD (On-Chip Debug) pins for JTAG/SWD access; required for flash programming and real-time debugging |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE 754-compliant 32-bit FPU with 16×32-bit registers, enabling deterministic real-time math for motor control and sensor fusion |
| Memory protection unit (MPU) | 8 configurable protection regions enforcing privilege/user mode access control for both code and data space |
| Dual-clock supervision | Independent monitoring of main (4 MHz) and sub (32 kHz) oscillators with automatic CR oscillator fallback on failure |
| ECC memory protection | End-to-end error correction on program flash, WorkFlash, and RAM-critical for ASIL-B compliance in automotive ECUs |
| Multi-channel PPG timer | 48-channel 16-bit programmable pulse generator supporting LED drive outputs (ch.11–ch.14) and precise waveform synthesis |
Applications
| Body Control Module (BCM) | Door Module Controller |
|---|---|
Use Scenario: Centralized management of lighting, window lift, mirror adjustment, and door lock functions in modern vehicles. IC Role / Device Role / Timing Role: Primary MCU executing real-time control logic, CAN message routing between LIN slaves and vehicle network, and ADC-based sensor monitoring (e.g., rain/light sensors). Use Value: Integrated triple CAN and 48-channel ADC enable consolidation of multiple legacy modules into one ECU while maintaining deterministic response under ASIL-B constraints. | Use Scenario: Local control of power windows, side mirrors, and interior lighting within individual vehicle doors. IC Role / Device Role / Timing Role: LIN master coordinating communication with door handle switches, motor drivers, and position sensors; uses sub-clock RTC for wake-on-approach timing. Use Value: On-chip LIN 2.1 support with hardware synch break generation reduces firmware overhead and ensures protocol compliance without external assist logic. |
| Roof Module Controller | Seat Control Unit |
Use Scenario: Managing sunroof actuation, panoramic roof shading, and ambient lighting in premium vehicle roof assemblies. IC Role / Device Role / Timing Role: Real-time motion control via PPG-driven H-bridge drivers; ADC feedback from position sensors and thermal monitors. Use Value: 48-channel PPG with LED drive outputs (ch.11–ch.14) allows direct PWM control of RGB ambient lighting strips without external LED drivers. | Use Scenario: Positioning, heating, and memory recall for electrically adjustable front seats with lumbar and massage functions. IC Role / Device Role / Timing Role: Safety-critical actuator control using FPU-accelerated PID loops; CAN messaging for seat position synchronization with vehicle gateway. Use Value: IEEE 754 FPU and ECC-protected RAM ensure repeatable, fault-resilient motor control calculations meeting ISO 26262 ASIL-B 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/F1K | 32-bit RXv2 core, 200 MHz max, 2 MB flash, no integrated FPU; uses different debug interface (E2 emulator) | Lacks on-chip FPU and WorkFlash; requires external ECC for RAM; higher flash density but less peripheral integration for LIN/CAN mix | Preferred for high-throughput gateway applications where raw MIPS outweighs mixed-signal peripheral count |
| S32K144 | Cortex-M4F core, 112 MHz, 512 KB flash, single CAN FD, 16-channel ADC, no PPG or RTC with sub-clock calibration | No sub-oscillator RTC calibration or dual-clock supervision; limited timer resources for LED/motor waveform generation | Better suited for entry-level body electronics where CAN FD and Ethernet readiness are prioritized over analog-rich control |
Compared with RH850/F1K and S32K144, the CY91F526BWBPMC1-GSE1 delivers superior mixed-signal integration-including triple CAN, 48-channel ADC, calibrated RTC, and 48-channel PPG-making it optimal for cost-sensitive, ASIL-B–compliant body domain controllers requiring high peripheral concurrency without external support ICs.
Availability
CY91F526BWBPMC1-GSE1 is available at Aetrix Electronics and suitable for automotive body control modules, door module controllers, roof assemblies, and seat control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY91F526BWBPMC1-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 with strong automotive qualification heritage.
This device belongs to the CY91520 series-a family of AEC-Q100 qualified 32-bit FR81S microcontrollers designed specifically for automotive body electronics, offering integrated CAN/LIN, high-resolution ADC, and functional safety features aligned with ISO 26262 ASIL-B requirements.
FAQ
What is the maximum operating frequency and associated voltage requirement?
The CY91F526BWBPMC1-GSE1 achieves 80 MHz maximum CPU frequency using its on-chip PLL with 4 MHz crystal input and ×20 multiplication. It operates across 2.7–5.5 V supply range, with guaranteed performance at 5 V and full specification compliance from -40°C to +125°C ambient temperature.
Does this MCU support CAN FD or only classical CAN 2.0B?
This device implements three classical CAN 2.0B controllers compliant with ISO 11898-1, supporting bit rates up to 1 Mbps. It does not support CAN FD frame format or higher data rates; CAN FD capability requires migration to Infineon's newer AURIX™ or Traveo™ II families.
How is flash security implemented and what protection mechanisms are active by default?
Flash security is enforced via key-code register locking and flash security bit settings. By default, flash write/erase and debug access are disabled after initial programming unless explicitly unlocked using the correct 32-bit key sequence. Security features include read-out protection, debug port disable, and boot vector masking.
Is the 32 kHz sub-oscillator used exclusively for RTC, or does it serve other timing functions?
The 32.768 kHz sub-oscillator serves both the real-time clock (RTC) and the Watch low-power mode timer. It also feeds the Clock Supervisor for failure detection and triggers automatic switchover to the 100 kHz CR oscillator when sub-clock anomalies are detected-ensuring continuous timing integrity during crystal faults.
CY91F526BWBPMC1-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:
CY91F526BWBPMC1-GSE1 FAQ
1.How can I place an order for CY91F526BWBPMC1-GSE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526BWBPMC1-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 CY91F526BWBPMC1-GSE1 reliable?
The price and inventory of CY91F526BWBPMC1-GSE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526BWBPMC1-GSE1 is usually 5 days.
3.What payment methods are accepted for CY91F526BWBPMC1-GSE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526BWBPMC1-GSE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526BWBPMC1-GSE1?
CY91F526BWBPMC1-GSE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526BWBPMC1-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 CY91F526BWBPMC1-GSE1?
For technical support, including CY91F526BWBPMC1-GSE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526BWBPMC1-GSE1 requirements.
6.How does Aetrix verify that CY91F526BWBPMC1-GSE1 is sourced from the original manufacturer or authorized distributors?
All CY91F526BWBPMC1-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 CY91F526BWBPMC1-GSE1 meets industry standards.
7.What is the process for return or replacement of CY91F526BWBPMC1-GSE1?
All CY91F526BWBPMC1-GSE1 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526BWBPMC1-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 CY91F526BWBPMC1-GSE1 part is unused and in its original packaging.
Return procedure for CY91F526BWBPMC1-GSE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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