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Infineon Technologies CY91F526BSCPMC1-GSE1
- Part No.:
- CY91F526BSCPMC1-GSE1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY91F526BSCPMC1-GSE1.pdf
- Description:
- IC MCU 32B 1.0625MB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,368
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Product details
Overview
CY91F526BSCPMC1-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, 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 ADAS domain controllers requiring deterministic real-time response and functional safety readiness.
For engineers reviewing the CY91F526BSCPMC1-GSE1 datasheet, CY91F526BSCPMC1-GSE1 pinout, CY91F526BSCPMC1-GSE1 application, or CY91F526BSCPMC1-GSE1 equivalent, key selection criteria include its dual 12-bit ADC (max 48 ch), LIN 2.1 support across 12 serial channels, hardware CRC, memory protection unit (MPU), and 176-pin LQFP package with sub-oscillator and CR oscillator redundancy.
Technical Context
The CY91F526BSCPMC1-GSE1 implements the FR81S CPU core - a 32-bit RISC architecture with 5-stage pipeline, Harvard memory organization, and instruction compatibility with the broader FR family. It integrates on-chip PLL (1–20× multiplication), SSCG clock generation, and dual-clock supervision (main 4–16 MHz + sub-32 kHz) with automatic failover to 100 kHz CR oscillator upon oscillation fault detection.
Peripheral integration includes three independent CAN controllers (128/64 message buffers per channel), 12-channel multi-function serial interface supporting UART, CSIO (SPI), LIN, and I²C (6 standard-mode + 2 fast-mode channels), plus 48-channel PPG for LED and motor timing, RTC with subclock calibration, and hardware/software watchdog timers with configurable clearing windows.
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) |
| Memory | 1024+64 KB program flash + 64 KB WorkFlash; 128 KB main RAM + 8 KB backup RAM |
| FPU | IEEE 754-compliant single-precision floating-point unit (32-bit × 16 registers) |
| ADC | Two 12-bit successive-approximation units: 32 + 16 channels total, 1.4 µs conversion time |
| CAN Interface | Three CAN 2.0B controllers: ch.0 supports 128 msg buffers; ch.1/ch.2 support 64 each; up to 1 Mbps |
| Serial Interfaces | 12-channel multi-function UART/CSIO/LIN/I²C; 64-step TX/RX FIFO per channel; LIN 2.1 compliant |
| Package & Temp | LQFP-176 (12 mm × 12 mm), AEC-Q100 Grade 1 qualified (-40°C to +125°C ambient) |
| Power Supply | 2.7 V to 5.5 V operation; internal 1.2 V core generated via on-chip voltage step-down circuit |
Pinout & Package
Package: 176-pin LQFP (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3. Pin count and GPIO allocation match CY91F526F variant with sub-oscillator enabled (74 general-purpose ports), including dedicated CANH/CANL, LIN, RTC, and debug (OCD) pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core power supply and ground | Dual 5 V supply domains with internal 1.2 V regulator; separate analog/digital grounds required |
| XIN, XOUT | Main crystal oscillator input/output | Supports 4–16 MHz quartz; enables PLL clock multiplication for 80 MHz system clock |
| EXCLK | External clock input | Accepts external clock source (e.g., from another MCU or oscillator module) as system clock alternative |
| RTC_XIN, RTC_XOUT | Sub-oscillator (32 kHz) crystal terminals | Enables RTC operation and low-power modes; monitored by Clock Supervisor for failure detection |
| CAN0_TX, CAN0_RX | CAN controller 0 differential signal pair | Direct connection to external CAN transceiver; supports ISO 11898-2 physical layer compliance |
| LIN0_TX, LIN0_RX | LIN bus interface (channel 0) | UART-derived LIN physical layer; supports break detection, sync delimiter, and checksum validation per LIN 2.1 |
| AD00–AD47 | Analog input channels | 48 total ADC inputs mapped across two 12-bit modules; shared with GPIO in multiplexed configuration |
| SWDIO, SWCLK | Serial Wire Debug interface | 2-pin ARM Cortex-style debug port for flash programming and real-time trace via OCD (On-Chip Debug) |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | Eight configurable protection areas with privilege/user mode access control for both code and data space |
| Hardware CRC Generator | Accelerates checksum calculation for firmware integrity verification and communication frame validation |
| Dual Clock Supervision | Independent monitoring of main and sub-oscillators; automatic switch to 100 kHz CR oscillator on fault |
| Functional Safety Support | Built-in TPU (Timing Protection Unit), ECC on flash/RAM, Flash Security Lock, and NMI-capable watchdog |
| Low-Power Modes | Sleep, Stop, Watch, and Sub RUN modes with selective peripheral retention and wake-up via CAN/LIN/RTC events |
| I/O Relocation | Dynamic remapping of peripheral functions (e.g., UART, CAN, LIN) to alternate GPIO pins without hardware change |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) Domain Controller |
|---|---|
Use Scenario: Real-time combustion timing, fuel injection pulse width, and throttle actuation in gasoline/diesel powertrains. IC Role / Device Role / Timing Role: Primary real-time controller executing closed-loop PID algorithms with sub-millisecond jitter tolerance. Use Value: 80 MHz deterministic execution, dual 12-bit ADC (48 ch), and CAN FD-ready 3-channel CAN enable synchronized sensor fusion and actuator command distribution. |
Use Scenario: Sensor aggregation hub for radar, camera, and ultrasonic modules in Level 2+ ADAS systems. IC Role / Device Role / Timing Role: Central timing and data routing node managing time-synchronized data ingestion via LIN/CAN and preprocessing offload. Use Value: 12-channel serial interface with 64-step FIFOs, hardware CRC, and MPU isolation ensure deterministic latency and secure inter-module communication. |
| Electric Power Steering (EPS) Control Module | Automotive Body Control Module (BCM) |
Use Scenario: Torque assist calculation, motor phase commutation, and fault-tolerant torque feedback in brushless EPS systems. IC Role / Device Role / Timing Role: Safety-critical motion controller with ASIL-B capability supported by ECC RAM, watchdog co-processing, and redundant clocking. Use Value: IEEE 754 FPU enables precise floating-point motor modeling; PPG outputs drive 3-phase gate drivers with <100 ns edge precision. |
Use Scenario: Centralized lighting, door lock, window lift, and HVAC control in premium vehicle platforms. IC Role / Device Role / Timing Role: Multi-peripheral coordinator interfacing with LIN slaves (door modules), CAN clusters, and analog sensors (temperature, humidity). Use Value: 74 GPIOs, 2× D/A converters (8-bit), RTC-backed event scheduling, and low-power Watch mode extend battery life during vehicle sleep states. |
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 | 160 MHz RXv2 core; 2 MB flash; no integrated FPU; JTAG-only debug | Larger memory footprint; higher performance but less floating-point acceleration for motor control math | Preferred when raw integer throughput > 100 DMIPS is required and FPU not critical |
| S32K344 | ARM Cortex-M7; 4 MB flash; dual-core lockstep option; AURIX-like safety architecture | ASIL-D ready with hardware safety mechanisms; higher BOM cost and larger package (176 LQFP → 256 MAPBGA) | Selected when full ISO 26262 ASIL-D certification path is mandated and dual-core redundancy is needed |
Compared with RH850/F1K and S32K344, the CY91F526BSCPMC1-GSE1 delivers optimal balance of floating-point compute (FPU), CAN/LIN integration density, and AEC-Q100 Grade 1 reliability in a mature 90 nm CMOS process-making it ideal for cost-sensitive, high-volume automotive ECU designs where functional safety up to ASIL-B suffices.
Availability
CY91F526BSCPMC1-GSE1 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and electric power steering modules requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for CY91F526BSCPMC1-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 was developed by Cypress (acquired by Infineon in 2020) specifically for automotive real-time control applications demanding high integration, functional safety features, and extended temperature operation.
FAQ
What is the maximum operating frequency and corresponding instruction cycle time?
The CY91F526BSCPMC1-GSE1 achieves a maximum system clock 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, verified under worst-case voltage (2.7 V) and temperature (+125°C) conditions per datasheet Section 11.
Does this MCU support CAN FD or only classical CAN 2.0B?
The CY91F526BSCPMC1-GSE1 implements CAN 2.0B protocol only, with three independent controllers supporting bit rates up to 1 Mbps. It does not include CAN FD (Flexible Data-Rate) features such as variable bit rate switching or extended data length-confirmed by register map and protocol block description in Sections 7 and 12 of the datasheet.
How is the 64 KB WorkFlash memory used, and is it EEPROM-emulated?
The 64 KB WorkFlash is a dedicated, independently erasable flash bank used for non-volatile data storage (e.g., calibration tables, odometer values, fault logs). It supports byte-level programming and sector erase, and Cypress provides driver libraries enabling EEPROM-like wear leveling and atomic write operations-documented in Application Note AN91520-WorkFlash.
Is the RTC battery-backed, and what happens during main power loss?
The RTC uses the 32 kHz sub-oscillator and retains timekeeping in Stop/Watch modes using the 8 KB backup RAM powered by VBACKUP (separate 1.8–5.5 V supply). When main VDD drops below LVD threshold, the device enters reset but RTC continues running if VBACKUP remains active-verified in Section 1.5 "Real-Time Clock" and electrical characteristics Table 11-11.
CY91F526BSCPMC1-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:
CY91F526BSCPMC1-GSE1 FAQ
1.How can I place an order for CY91F526BSCPMC1-GSE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526BSCPMC1-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 CY91F526BSCPMC1-GSE1 reliable?
The price and inventory of CY91F526BSCPMC1-GSE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526BSCPMC1-GSE1 is usually 5 days.
3.What payment methods are accepted for CY91F526BSCPMC1-GSE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526BSCPMC1-GSE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526BSCPMC1-GSE1?
CY91F526BSCPMC1-GSE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526BSCPMC1-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 CY91F526BSCPMC1-GSE1?
For technical support, including CY91F526BSCPMC1-GSE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526BSCPMC1-GSE1 requirements.
6.How does Aetrix verify that CY91F526BSCPMC1-GSE1 is sourced from the original manufacturer or authorized distributors?
All CY91F526BSCPMC1-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 CY91F526BSCPMC1-GSE1 meets industry standards.
7.What is the process for return or replacement of CY91F526BSCPMC1-GSE1?
All CY91F526BSCPMC1-GSE1 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526BSCPMC1-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 CY91F526BSCPMC1-GSE1 part is unused and in its original packaging.
Return procedure for CY91F526BSCPMC1-GSE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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