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Infineon Technologies CY91F526BSCPMC1-GSE2
- Part No.:
- CY91F526BSCPMC1-GSE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY91F526BSCPMC1-GSE2.pdf
- Description:
- IC MCU 32B 1.0625MB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,702
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Product details
Overview
CY91F526BSCPMC1-GSE2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S automotive microcontroller with 1024 KB + 64 KB program flash, 128 KB main RAM + 8 KB backup RAM, IEEE 754-compliant FPU, and integrated CAN 2.0B controllers (3 channels, up to 1 Mbps). It operates at 80 MHz (12.5 ns instruction cycle), supports -40 °C to +125 °C, and targets engine control units and body electronics requiring functional safety-aware peripherals.
For engineers reviewing the CY91F526BSCPMC1-GSE2 datasheet, CY91F526BSCPMC1-GSE2 pinout, CY91F526BSCPMC1-GSE2 application, or CY91F526BSCPMC1-GSE2 equivalent, key selection criteria include its 176-pin LQFP package, dual-voltage operation (5 V supply with internal 1.2 V core), hardware watchdog, memory protection unit (MPU), and LIN/CAN/I²C/UART multi-serial interface support for ASIL-B–capable systems.
Technical Context
The CY91F526BSCPMC1-GSE2 implements the FR81S 32-bit RISC CPU with 5-stage pipeline, Harvard architecture, and instruction compatibility with the FR family. It integrates an on-chip PLL supporting 1×–20× multiplication of 4–16 MHz main oscillation, plus a 32 kHz sub-oscillator and 100 kHz CR oscillator for clock supervision and RTC operation.
Peripheral integration includes three independent CAN controllers (128/64 message buffers per channel), 12-channel multi-function serial interface (UART/CSIO/LIN/I²C), 48-channel PPG for LED/timing control, 12-bit A/D converter (up to 48 channels, 1.4 μs conversion), and ECC-protected flash (1024+64 KB) and RAM (128+8 KB).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | FR81S 32-bit RISC, 5-stage pipeline, 80 MHz max (12.5 ns instruction cycle) |
| Flash Memory | 1024 KB program + 64 KB WorkFlash, ECC-protected, 5 V-programmable |
| RAM | 128 KB main RAM + 8 KB backup RAM, ECC-protected |
| FPU | IEEE 754-compliant 32-bit floating-point unit, 16×32-bit registers |
| CAN Interfaces | 3 × CAN 2.0B controllers: ch.0 (128 msg buffers), ch.1/ch.2 (64 msg buffers each), up to 1 Mbps |
| A/D Converter | 12-bit successive approximation, 48 channels total (32+16), 1.4 μs conversion time |
| Operating Temp | -40 °C to +125 °C ambient, qualified for automotive AEC-Q100 Grade 1 |
| Power Supply | 5 V external supply; internal 1.2 V core generated via on-chip voltage step-down |
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 | Dedicated 5 V supply pins with decoupling requirements per datasheet layout guidelines |
| XTAL1/XTAL2 | Main crystal oscillator input/output | Supports 4–16 MHz fundamental-mode quartz crystal for PLL reference clock |
| OSC32IN/OSC32OUT | Sub-clock oscillator terminals | Connects 32.768 kHz tuning-fork crystal for RTC and low-power mode timing |
| CAN0TX/CAN0RX | CAN channel 0 differential signal pair | Direct connection to external CAN transceiver; supports ISO 11898-2 physical layer |
| AD0–AD47 | Analog input channels | 48 dedicated A/D input pins mapped across multiple ports; share GPIO functionality when not in analog mode |
| P00–P119 | General-purpose I/O ports | 120 configurable GPIOs (including 16 I²C-open-drain capable), with I/O relocation and drive strength control |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 configurable protection areas enforcing privilege/user mode access control for both code and data space |
| Hardware Watchdog Timer | Dedicated independent watchdog with windowed timeout and reset generation, immune to software lockup |
| Real-Time Clock (RTC) | Calendar-based timekeeping (year/month/day/hour/min/sec) with sub-oscillator or main clock source selection |
| Clock Supervisor | Dual-clock monitoring (main 4 MHz & sub 32 kHz); automatic failover to 100 kHz CR oscillator on fault detection |
| Low-Power Modes | Sleep, Stop, Watch, and Sub RUN modes with selective peripheral retention and wake-up via CAN/LIN/external interrupt |
| On-Chip Debug (OCD) | Full JTAG-based debug interface supporting real-time trace, breakpoint, and memory inspection without halting CPU |
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 compute engine executing ASAM-compliant control algorithms with deterministic 80 MHz execution and CAN-based sensor/actuator communication. Use Value: Integrated FPU enables precise floating-point math for air-fuel ratio modeling; ECC flash/RAM ensures runtime integrity under EMI-rich under-hood conditions. |
Use Scenario: Centralized management of lighting, door locks, window lifts, and HVAC in premium passenger vehicles. IC Role / Device Role / Timing Role: System coordinator interfacing with LIN slaves (door modules) and CAN backbone (instrument cluster, gateway). Use Value: 12-channel multi-serial interface supports concurrent LIN (ch.6–ch.11), UART (ch.0–ch.5), and I²C (ch.3–ch.8) without external bridging logic. |
| 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 ADC sampling (48 ch @ 1.4 μs), CRC checksumming, and CAN FD–ready message framing. Use Value: Hardware-accelerated CRC generation and DMA-driven ADC-to-CAN transfer reduce CPU load by >40% versus software-only implementations. |
Use Scenario: Closed-loop torque assist control with motor position feedback, current sensing, and fail-safe torque limiting. IC Role / Device Role / Timing Role: Safety-critical actuator controller implementing ISO 26262 ASIL-B decomposition with MPU-enforced memory partitioning. Use Value: Dual CAN interfaces enable redundant communication paths (steering angle sensor + motor driver), while hardware watchdog and clock supervisor meet ASIL-B diagnostic coverage requirements. |
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 | 40 nm process, 200 MHz core, 2 MB flash, no integrated FPU; uses G3KH core instead of FR81S | Larger memory footprint and higher performance, but lacks IEEE 754 FPU and requires external floating-point library | Select for high-throughput motor control where integer DSP dominates; avoid if legacy FR-family toolchain or FPU-dependent algorithms are required. |
| S32K144 | ARM Cortex-M4F core, 112 MHz, 512 KB flash, integrated FPU, AEC-Q100 Grade 1, but only 2 CAN channels | Strong ecosystem (S32DS, AUTOSAR), lower pin count (100 LQFP), less GPIO and serial channel density than CY91F526B | Select for new designs prioritizing toolchain maturity and AUTOSAR compliance; avoid when >2 CAN buses or >120 GPIOs are mandatory. |
Compared with RH850/F1K and S32K144, the CY91F526BSCPMC1-GSE2 delivers unique value in FR-family software continuity, 3-CAN bus support, 120+ GPIOs in 176-LQFP, and on-die FPU-making it optimal for cost-sensitive, high-I/O automotive modules needing minimal architectural migration.
Availability
CY91F526BSCPMC1-GSE2 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS sensor hubs, and electric power steering controllers requiring stable component supply across extended automotive lifecycles.
Supply support for CY91F526BSCPMC1-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 management, automotive MCUs, and security solutions.
This device belongs to the CY91520 series-a 32-bit FR81S microcontroller family designed specifically for automotive applications demanding ASIL-B compliance, high peripheral integration, and long-term supply stability in harsh environments.
FAQ
What is the maximum operating frequency and associated instruction cycle time?
The CY91F526BSCPMC1-GSE2 achieves a maximum operating frequency of 80 MHz using its on-chip PLL with 4 MHz crystal input and 20× multiplication. This yields a minimum instruction execution time of 12.5 ns per cycle, confirmed in the electrical characteristics table (Section 11, Page 133 of DS002-04662 Rev. *I). The FR81S core executes most instructions in one cycle due to its 5-stage pipeline and fixed-length 16-bit encoding.
Does this MCU support functional safety standards such as ISO 26262?
Yes-the CY91F526BSCPMC1-GSE2 is AEC-Q100 Grade 1 qualified (-40 °C to +125 °C) and includes hardware features required for ASIL-B decomposition: memory protection unit (MPU), ECC on flash and RAM, hardware watchdog timer, clock supervisor with failover, and NMI support. While Infineon does not certify the part to ISO 26262 itself, the device provides the foundational safety mechanisms documented in the safety manual (Infineon AN229781).
How many CAN interfaces does it have, and what are their buffer configurations?
The CY91F526BSCPMC1-GSE2 integrates three independent CAN 2.0B controllers. Channel 0 provides 128 message buffers (64 transmit + 64 receive), while channels 1 and 2 each provide 64 message buffers (32 transmit + 32 receive). All channels support bit rates up to 1 Mbps and feature dedicated message RAM, acceptance filtering, and loopback self-test modes per the CAN specification.
Is the 176-pin LQFP package lead-free and RoHS compliant?
Yes-the CY91F526BSCPMC1-GSE2 uses a lead-free, RoHS-compliant 176-pin LQFP package (package code: LQD176), as specified in Section 17 "Package Dimensions" (Page 218) of the datasheet. It meets JEDEC J-STD-020 moisture sensitivity level 3 and requires standard reflow profile for Pb-free assembly (peak temperature 260 °C, 10–30 sec above 217 °C).
CY91F526BSCPMC1-GSE2 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:
CY91F526BSCPMC1-GSE2 FAQ
1.How can I place an order for CY91F526BSCPMC1-GSE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526BSCPMC1-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 CY91F526BSCPMC1-GSE2 reliable?
The price and inventory of CY91F526BSCPMC1-GSE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526BSCPMC1-GSE2 is usually 5 days.
3.What payment methods are accepted for CY91F526BSCPMC1-GSE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526BSCPMC1-GSE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526BSCPMC1-GSE2?
CY91F526BSCPMC1-GSE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526BSCPMC1-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 CY91F526BSCPMC1-GSE2?
For technical support, including CY91F526BSCPMC1-GSE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526BSCPMC1-GSE2 requirements.
6.How does Aetrix verify that CY91F526BSCPMC1-GSE2 is sourced from the original manufacturer or authorized distributors?
All CY91F526BSCPMC1-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 CY91F526BSCPMC1-GSE2 meets industry standards.
7.What is the process for return or replacement of CY91F526BSCPMC1-GSE2?
All CY91F526BSCPMC1-GSE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526BSCPMC1-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 CY91F526BSCPMC1-GSE2 part is unused and in its original packaging.
Return procedure for CY91F526BSCPMC1-GSE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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