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Infineon Technologies CY91F526DSCPMC-GSE1
- Part No.:
- CY91F526DSCPMC-GSE1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
CY91F526DSCPMC-GSE1.pdf
- Description:
- IC MCU 32B 1.0625MB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,330
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Product details
Overview
CY91F526DSCPMC-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 triple CAN 2.0B controllers. It operates from -40°C to +125°C and supports LIN 2.1, UART, CSIO (SPI), I²C, and 12-channel multi-function serial interfaces for body control modules and powertrain gateways.
For engineers reviewing the CY91F526DSCPMC-GSE1 datasheet, CY91F526DSCPMC-GSE1 pinout, CY91F526DSCPMC-GSE1 application, or CY91F526DSCPMC-GSE1 equivalent, key selection criteria include its 176-pin LQFP package, dual-clock supervisor with CR fallback, 12-bit 48-channel ADC (1.4 µs conversion), 8-bit dual DAC, and hardware memory protection unit (MPU) supporting eight configurable regions in privilege/user modes.
Technical Context
The CY91F526DSCPMC-GSE1 implements the FR81S 32-bit RISC core with five-stage pipeline, Harvard architecture, and instruction compatibility with the broader FR family. It integrates on-chip PLL with 1–20× multiplication, SSCG clock generation, and independent sub-oscillator (32 kHz) support for RTC and low-power modes.
Peripheral integration includes three CAN controllers (1 Mbps, 128/64 message buffers per channel), 12-channel multi-function serial interface with dedicated baud rate generators, and a 16-bit PPG subsystem with 48 channels supporting LED drive outputs and waveform generation. All critical peripherals are ECC-protected and supported by DMA with up to 16 channels.
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 |
| Communication | 3× CAN 2.0B (1 Mbps); 12× multi-function serial (UART/CSIO/LIN/I²C); 2× I²C (std/fast mode) |
| Timers & PWM | 16-bit × 48-channel PPG; 16/32-bit free-run timers (3/3 ch); 16-bit reload timers (8 ch); 6-channel waveform generator |
| Power & Safety | 2.7–5.5 V operation; -40°C to +125°C ambient; hardware/software watchdog; MPU with 8 regions; ECC on flash/RAM |
| Package | LQFP-176 (24 × 24 mm, 0.5 mm pitch), RoHS-compliant, automotive-grade |
Pinout & Package
Package: 176-pin LQFP (24 mm × 24 mm, 0.5 mm pitch), thermally enhanced, automotive AEC-Q100 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / Ground | Dual 5 V supply domains with internal 1.2 V regulator; separate analog/digital ground pins for noise isolation |
| 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 (e.g., from another MCU or oscillator) for synchronous system timing |
| RTC_XIN, RTC_XOUT | Sub-oscillator input/output | Connects 32.768 kHz crystal for RTC and low-power wake-up; monitored by Clock Supervisor |
| CAN0_TX, CAN0_RX | CAN Channel 0 differential I/O | Direct connection to external CAN transceiver; supports 1 Mbps bit rate with built-in protocol engine |
| AD0–AD47 | Analog input channels | 48 dedicated ADC input pins mapped across multiple ports; configurable sampling sequence and trigger sources |
| DA0, DA1 | DAC output channels | Two buffered 8-bit voltage outputs usable for sensor biasing, calibration references, or actuator control signals |
| TRST, TDI, TDO, TCK, TMS | JTAG debug interface | Full OCD (On-Chip Debug) support for real-time trace, breakpoint, and memory inspection during development |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE 754-compliant 32-bit FPU with 16-register file; enables deterministic math for motor control and sensor fusion |
| Memory Protection Unit (MPU) | Eight configurable protection regions with privilege/user mode access control; prevents unauthorized code/data access in ASIL-B systems |
| Clock Supervisor | Dual monitoring of main (4–16 MHz) and sub (32 kHz) oscillators; automatic switch to 100 kHz CR oscillator on failure |
| ECC protection | End-to-end ECC on program flash, WorkFlash, and RAM; detects and corrects single-bit errors, reports double-bit faults |
| Low-power modes | Sleep, Stop, Watch, Sub RUN modes with sub-μA retention current; RTC and selected peripherals remain active in Watch mode |
Applications
| Body Control Module (BCM) | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Centralized vehicle body management including door locks, lighting, wipers, and HVAC control. IC Role / Device Role / Timing Role: Main application controller executing real-time task scheduling, CAN/LIN gateway functions, and GPIO-driven actuation. Use Value: Integrated triple CAN and 48-channel ADC enable direct sensor interfacing (e.g., rain/light sensors), while 128 KB RAM supports AUTOSAR OS and complex state machines without external memory. | Use Scenario: Closed-loop torque assist control with motor position feedback, torque sensor inputs, and EPS ECU communication. IC Role / Device Role / Timing Role: Real-time motor control processor running field-oriented control (FOC) algorithms with precise PWM timing and ADC synchronization. Use Value: FR81S core with 80 MHz deterministic execution and IEEE 754 FPU delivers <1 µs interrupt latency and cycle-accurate math for high-bandwidth current loops. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Gateway |
Use Scenario: Gear shift logic, solenoid driver control, and hydraulic pressure regulation in automatic transmissions. IC Role / Device Role / Timing Role: Safety-critical controller managing time-triggered CAN messages, fault diagnostics, and watchdog supervision per ISO 26262 ASIL-B. Use Value: Hardware MPU, ECC memory, and dual-clock supervision ensure runtime integrity; 12-bit ADC resolves transmission fluid temperature and pressure with ±0.5°C accuracy. | Use Scenario: Aggregation and routing of camera, radar, and ultrasonic data between ADAS ECUs and central domain controller. IC Role / Device Role / Timing Role: High-throughput communication hub with concurrent CAN FD (via external transceivers), LIN, and UART links to multiple sensors. Use Value: 12-channel multi-function serial interface supports simultaneous camera debug streams (UART), radar sync (LIN), and sensor fusion data (CAN), reducing BOM count vs. discrete bridge ICs. |
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 different ISA | Targeted at higher ASIL-D systems with lockstep cores; lacks integrated LIN 2.1 and sub-oscillator RTC | Choose RH850/F1K only when dual-lockstep safety certification is mandatory and external FPU acceleration is acceptable. |
| S32K144 | ARM Cortex-M4F core, 512 KB flash, 128 KB RAM, 1× CAN FD, no PPG subsystem | Optimized for entry-level ADAS and battery management; lacks 48-channel PPG and triple CAN legacy support | Select S32K144 for cost-sensitive CAN FD designs where LIN 2.1 and high-channel-count PWM are not required. |
Compared with RH850/F1K and S32K144, the CY91F526DSCPMC-GSE1 uniquely combines FR81S deterministic real-time performance, triple CAN 2.0B with full message buffering, integrated LIN 2.1, and 48-channel PPG-making it optimal for legacy automotive networks requiring high GPIO density and mixed-signal control without ARM licensing.
Availability
CY91F526DSCPMC-GSE1 is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering units, and transmission control units requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CY91F526DSCPMC-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 MCUs, and security solutions, with global R&D and manufacturing infrastructure.
The CY91520 series belongs to Infineon's legacy FR-family automotive MCU portfolio, designed specifically for ASIL-B compliant body electronics, chassis control, and gateway applications requiring high analog integration, deterministic timing, and long-term automotive qualification.
FAQ
What is the maximum operating junction temperature for CY91F526DSCPMC-GSE1?
The device is qualified for operation from -40°C to +125°C ambient temperature per AEC-Q100 Grade 1. Its maximum junction temperature is 150°C under continuous operation with proper PCB thermal design, verified via transient thermal modeling and package characterization in the official datasheet (002-04662 Rev. *I, Section 11).
Does CY91F526DSCPMC-GSE1 support CAN FD?
No. The CY91F526DSCPMC-GSE1 integrates three CAN 2.0B controllers supporting up to 1 Mbps classical CAN only. It does not implement CAN FD protocol features such as flexible data-rate, CRC21, or extended payload length. CAN FD capability requires external transceivers and software-layer adaptation, which is not natively supported by the on-chip peripheral.
Is the 64 KB WorkFlash memory EEPROM-emulated?
Yes. The 64 KB WorkFlash is a dedicated sector of on-chip program flash configured for frequent erase/write cycles using Cypress/Infineon's Flash API. It supports byte-level programming and wear leveling via firmware, enabling EEPROM-like data logging and parameter storage without external non-volatile memory.
Can the FR81S core execute code directly from RAM?
No. The FR81S core uses Harvard architecture with separate instruction and data buses and executes only from program flash or external memory via the 22-bit address/16-bit data bus interface. RAM is accessible only for data; no instruction fetch from RAM is supported in hardware or documented in the architecture manual.
CY91F526DSCPMC-GSE1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 80-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:
- 56
- 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 32x12b; D/A 1x8b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY91F526DSCPMC-GSE1 FAQ
1.How can I place an order for CY91F526DSCPMC-GSE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526DSCPMC-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 CY91F526DSCPMC-GSE1 reliable?
The price and inventory of CY91F526DSCPMC-GSE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526DSCPMC-GSE1 is usually 5 days.
3.What payment methods are accepted for CY91F526DSCPMC-GSE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526DSCPMC-GSE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526DSCPMC-GSE1?
CY91F526DSCPMC-GSE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526DSCPMC-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 CY91F526DSCPMC-GSE1?
For technical support, including CY91F526DSCPMC-GSE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526DSCPMC-GSE1 requirements.
6.How does Aetrix verify that CY91F526DSCPMC-GSE1 is sourced from the original manufacturer or authorized distributors?
All CY91F526DSCPMC-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 CY91F526DSCPMC-GSE1 meets industry standards.
7.What is the process for return or replacement of CY91F526DSCPMC-GSE1?
All CY91F526DSCPMC-GSE1 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526DSCPMC-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 CY91F526DSCPMC-GSE1 part is unused and in its original packaging.
Return procedure for CY91F526DSCPMC-GSE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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