My Inquiry
My Account
Infineon Technologies CY91F526FSCPMC-GSE1
- Part No.:
- CY91F526FSCPMC-GSE1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY91F526FSCPMC-GSE1.pdf
- Description:
- IC MCU 32B 1.0625MB FLSH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,833
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY91F526FSCPMC-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, and integrated CAN 2.0B (3 channels), 12-channel multi-serial interface (UART/CSIO/LIN/I²C), 48-channel PPG, and IEEE 754-compliant FPU. It operates at up to 80 MHz (12.5 ns instruction cycle) and supports -40 °C to +125 °C ambient operation for engine control units and body electronics.
For engineers reviewing the CY91F526FSCPMC-GSE1 datasheet, CY91F526FSCPMC-GSE1 pinout, CY91F526FSCPMC-GSE1 application, or CY91F526FSCPMC-GSE1 equivalent, key selection criteria include its 100-pin LQFP package, dual-clock supervision (main/sub/CR oscillators), hardware watchdog with software-clearable window, ECC-protected flash/RAM, and MPU-enforced privilege separation for ASIL-B–capable firmware partitioning.
Technical Context
The CY91F526FSCPMC-GSE1 implements the FR81S 32-bit RISC core with 5-stage pipeline, Harvard architecture, and instruction compatibility with the FR family. It integrates on-chip PLL (1×–20× multiplication), SSCG clock generation, and sub-oscillator calibration for RTC accuracy.
Peripheral integration includes three independent CAN controllers (128/64/64 message buffers), 12-bit A/D converter (48 channels total), dual 8-bit D/A converters, 48-channel PPG with LED drive capability, and 16-channel DMA supporting UART/CSIO/LIN/I²C/CAN transfers - all operating under a unified interrupt controller with 16 priority levels and batch-read capability.
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 |
| Operating Temp | -40 °C to +125 °C ambient, qualified for automotive powertrain and chassis applications |
| CAN Interface | 3 independent CAN 2.0B controllers: ch.0 (128 msg buffers), ch.1/ch.2 (64 msg each) |
| Serial Interfaces | 12-channel multi-function serial (UART/CSIO/LIN/I²C), including LIN 2.1 support with synch break/delimiter |
| ADC/DAC | 12-bit successive-approximation ADC (48 ch, 1.4 μs conversion); dual 8-bit R-2R DAC |
| Security & Reliability | ECC on flash and RAM; MPU with 8 protection areas; hardware/software watchdog; TPU and key code register |
Pinout & Package
Package: 100-pin LQFP (LQF0100), 14 × 14 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 supply domains with internal 1.2 V regulator; separate analog/digital ground pins for noise isolation |
| XTAL1/XTAL2 | Main crystal oscillator input/output | Supports 4–16 MHz external crystal; enables PLL-based system clock generation |
| RTCX1/RTCX2 | Sub-clock oscillator input/output | 32 kHz crystal connection for RTC and low-power mode timing; calibrated via prescaler |
| CRCLK | Internal CR oscillator output | 100 kHz RC clock used as failover when main/sub oscillators fault; monitored by Clock Supervisor |
| CAN0TX/CAN0RX | CAN channel 0 differential signal pair | Direct connection to external CAN transceiver; supports up to 1 Mbps data rate |
| P00–P99 | General-purpose I/O ports | 74 GPIOs available (sub-oscillator enabled); configurable as UART/CSIO/LIN/I²C/CAN/PPG/ADC inputs |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE 754-compliant 32-bit FPU with 16-register file; accelerates motor control and sensor fusion math |
| Memory protection unit (MPU) | 8 configurable protection regions enforcing privilege/user mode access control for ASIL-B firmware isolation |
| Real-time clock (RTC) | Day/hour/min/sec calendar with sub-oscillator calibration; retains time in Stop/Watch modes using backup RAM |
| Low-power modes | Sleep, Stop, Watch, Sub RUN - Stop/Watch disable CPU/core logic while retaining RTC and wakeup sources |
| Clock supervision | Dual monitoring of main (4 MHz) and sub (32 kHz) oscillators; automatic switch to CR clock on failure |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time combustion timing, fuel injection pulse width, and knock detection in gasoline/diesel engines. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop control algorithms with deterministic 12.5 ns instruction timing and CAN-based sensor/actuator communication. Use Value: Integrated 48-channel ADC (1.4 μs conversion), 48-channel PPG for solenoid drive, and 3-CAN bus support enable consolidated ECU architecture without external timing co-processors. |
Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC in premium vehicle platforms. IC Role / Device Role / Timing Role: System coordinator interfacing with LIN slaves (door modules), CAN clusters, and PWM-driven LED drivers. Use Value: 12-channel multi-serial interface (including LIN 2.1 synch break generation) and 74 GPIOs allow direct peripheral control without external bus expanders. |
| 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 sampling (via PPG-triggered ADC) and CAN FD–ready message framing. Use Value: Hardware CRC, ECC RAM/flash, and MPU enforce data integrity and functional safety compliance (ISO 26262 ASIL-B) for sensor fusion pipelines. |
Use Scenario: Torque assist calculation, motor phase commutation, and fault response in brushless EPS systems. IC Role / Device Role / Timing Role: Safety-critical actuator controller requiring lockstep-capable computation, precise PWM generation, and redundant voltage monitoring. Use Value: Dual 8-bit DACs for analog feedback, 16-bit PPG timers with dead-time insertion, and low-voltage detection reset (2.8 V ±8%) ensure safe torque reduction during brownout events. |
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 | 32-bit RXv2 core, 200 MHz max, 2 MB flash, no integrated FPU; uses different debug interface (JTAG vs. OCD) | Larger memory footprint; targets higher-tier ADAS domain controllers rather than cost-sensitive ECUs | Select when >1 MB flash and dual-core lockstep required; not drop-in due to pinout and peripheral register differences |
| S32K144 | ARM Cortex-M4F core, 112 MHz, 512 KB flash, 64 KB RAM, single CAN FD channel, no PPG | Focus on CAN FD and Ethernet readiness; lacks dedicated waveform generator and high-channel-count ADC | Prefer for new designs requiring AUTOSAR OS compatibility and CAN FD migration path; requires redesign of PPG/ADC timing logic |
Compared with RH850/F1K and S32K144, the CY91F526FSCPMC-GSE1 delivers higher GPIO count (74), integrated PPG for solenoid/LED drive, and FR81S-specific toolchain continuity - making it optimal for legacy ECU upgrades where pin-compatible replacement and minimal firmware porting effort are critical.
Availability
CY91F526FSCPMC-GSE1 is available at Aetrix Electronics and suitable for engine control units, body control modules, and electric power steering systems requiring stable component supply across extended automotive lifecycles.
Supply support for CY91F526FSCPMC-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 originally developed by Cypress Semiconductor and continues under Infineon's automotive microcontroller portfolio, targeting ASIL-B–compliant powertrain, chassis, and body electronics with emphasis on real-time determinism and functional safety features.
FAQ
What is the maximum operating frequency and associated instruction cycle time?
The CY91F526FSCPMC-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 basic instruction, confirmed in the datasheet's Electrical Characteristics section (Page 133). The FR81S core executes most 16-bit instructions in a single cycle, enabling deterministic real-time response.
Does this MCU support CAN FD or only classical CAN 2.0B?
The CY91F526FSCPMC-GSE1 implements three classical CAN 2.0B controllers - not CAN FD. Each channel supports bit rates up to 1 Mbps, with message buffering of 128 (ch.0) or 64 (ch.1/ch.2) frames. CAN FD features such as flexible data-rate switching and extended payload length are absent; the peripheral block diagram and register descriptions confirm only legacy CAN protocol support.
How is flash memory organized, and what is the purpose of WorkFlash?
This MCU contains two distinct flash regions: 1024 KB program flash for executable code and 64 KB dedicated WorkFlash for non-volatile data storage (e.g., calibration tables, odometer values). WorkFlash supports erase/write operations independently of program flash, enabling field updates without disrupting firmware execution. Both regions feature ECC protection and secure boot enforcement.
Is the FPU hardware-accelerated, and which IEEE 754 formats does it support?
Yes, the CY91F526FSCPMC-GSE1 includes a fully hardware-implemented IEEE 754-compliant floating-point unit supporting single-precision (32-bit) arithmetic only. It provides 16 × 32-bit floating-point registers and executes ADD/SUB/MUL/DIV operations in fixed latency cycles. Double-precision operations are not supported in hardware and require software emulation.
CY91F526FSCPMC-GSE1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-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:
- 76
- 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 37x12b; D/A 2x8b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY91F526FSCPMC-GSE1 FAQ
1.How can I place an order for CY91F526FSCPMC-GSE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526FSCPMC-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 CY91F526FSCPMC-GSE1 reliable?
The price and inventory of CY91F526FSCPMC-GSE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526FSCPMC-GSE1 is usually 5 days.
3.What payment methods are accepted for CY91F526FSCPMC-GSE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526FSCPMC-GSE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526FSCPMC-GSE1?
CY91F526FSCPMC-GSE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526FSCPMC-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 CY91F526FSCPMC-GSE1?
For technical support, including CY91F526FSCPMC-GSE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526FSCPMC-GSE1 requirements.
6.How does Aetrix verify that CY91F526FSCPMC-GSE1 is sourced from the original manufacturer or authorized distributors?
All CY91F526FSCPMC-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 CY91F526FSCPMC-GSE1 meets industry standards.
7.What is the process for return or replacement of CY91F526FSCPMC-GSE1?
All CY91F526FSCPMC-GSE1 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526FSCPMC-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 CY91F526FSCPMC-GSE1 part is unused and in its original packaging.
Return procedure for CY91F526FSCPMC-GSE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY91F526FSCPMC-GSE1 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
