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Infineon Technologies CY91F526BSDPMC1-GSE1
- Part No.:
- CY91F526BSDPMC1-GSE1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY91F526BSDPMC1-GSE1.pdf
- Description:
- IC MCU 32B 1.0625MB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,952
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Product details
Overview
CY91F526BSDPMC1-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 triple CAN 2.0B controllers supporting up to 1 Mbps. It operates at 80 MHz (12.5 ns instruction cycle), features hardware memory protection (MPU), ECC on flash/RAM, and is qualified for -40 °C to +125 °C operation in engine control units.
For engineers reviewing the CY91F526BSDPMC1-GSE1 datasheet, CY91F526BSDPMC1-GSE1 pinout, CY91F526BSDPMC1-GSE1 application, or CY91F526BSDPMC1-GSE1 equivalent, key selection criteria include its dual 12-bit ADC (max 48 ch), LIN 2.1 support, 16-bit PPG waveform generation, RTC with subclock calibration, and 176-pin LQFP package with 120 GPIOs (no sub-oscillator mode).
Technical Context
The CY91F526BSDPMC1-GSE1 implements the FR81S 32-bit RISC core with 5-stage pipeline, Harvard architecture, and instruction compatibility with the FR family. It integrates an on-chip PLL with 1–20× multiplication, SSCG clock generator, and dual-clock supervision (main 4–16 MHz + sub 32 kHz) with automatic CR oscillator fallback.
Peripheral integration includes three independent CAN controllers (128/64-message buffers), 12-channel multi-function serial interface (UART/CSIO/LIN/I²C), 16-bit × 48-channel PPG, and 12-bit successive-approximation ADC with 1.4 μs conversion time across up to 48 channels - all operating under ECC-protected memory and MPU-enforced privilege separation.
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 register file |
| CAN Interfaces | 3 × CAN 2.0B controllers: ch.0 supports 128 msg buffers; ch.1/ch.2 support 64 msg buffers each |
| ADC | 12-bit successive approximation, 48-channel total (32+16), 1.4 μs conversion time |
| Package | LQFP-176 (24 × 24 mm, 0.5 mm pitch), 120 GPIOs (no sub-oscillator configuration) |
| Operating Temp | -40 °C to +125 °C ambient, qualified for automotive powertrain and chassis applications |
| Power Supply | 2.7 V to 5.5 V; internal 1.2 V core generated via on-chip step-down regulator |
Pinout & Package
LQFP-176 package (24 mm × 24 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad. Pinout validated per Cypress/Infineon Document Number 002-04662 Rev. *I, Pages 12–17.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core power supply / ground | Dual 5 V supply domains: analog/digital separated; internal 1.2 V core generated on-die |
| 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 system timing |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external reset supervisor ICs |
| CAN0_TX, CAN0_RX | CAN channel 0 differential signal pair | Direct connection to external CAN transceiver (e.g., TJA1042); supports 1 Mbps |
| AD0–AD47 | Analog input channels | 48 dedicated ADC input pins mapped across multiple ports; configurable as GPIO when unused |
| PPG0–PPG47 | Pulse pattern generator outputs | 48-channel 16-bit PPG for LED drive, motor control, or PWM waveform synthesis |
Key Features
| Feature | Design Value |
|---|---|
| Memory Protection Unit (MPU) | 8 configurable protection areas enforcing privilege/user mode access control for both code and data |
| ECC Protection | End-to-end error correction on program flash, WorkFlash, and RAM - detects/corrects single-bit errors |
| Real-Time Clock (RTC) | Subclock (32 kHz) or main clock selectable; includes prescaler-based calibration for long-term accuracy |
| Low-Power Modes | Sleep, Stop, Watch, Sub RUN - Stop/Watch modes shut down CPU/core while retaining RTC and wakeup capability |
| On-Chip Debug (OCD) | Full JTAG-based debug interface with real-time trace, breakpoint, and memory inspection support |
| Timing Protection Unit (TPU) | Hardware watchdog with configurable timeout and software-clear window enforcement for ASIL-B compliance |
Applications
| Engine Control Unit (ECU) | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Real-time combustion timing, fuel injection pulse width, and knock detection in gasoline/diesel engines. IC Role / Device Role / Timing Role: Primary controller executing safety-critical ASIL-B algorithms with deterministic interrupt latency and ECC-protected code execution. Use Value: Triple CAN interfaces enable concurrent communication with sensors, actuators, and gateway modules; 128 KB RAM supports complex observer models and calibration data buffering. |
Use Scenario: Torque assist calculation, motor phase control, and fault monitoring in 12 V/48 V EPS systems. IC Role / Device Role / Timing Role: High-resolution PPG and 12-bit ADC deliver precise motor current sensing and PWM generation with <1 μs jitter. Use Value: Integrated FPU accelerates vector-based motor control algorithms; RTC with subclock calibration maintains accurate timekeeping during battery voltage dips. |
| Brake-by-Wire System | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
Use Scenario: Redundant actuator control, pressure feedback processing, and fail-safe valve positioning in electro-hydraulic brake systems. IC Role / Device Role / Timing Role: Dual-lockstep-capable MCU (via external synchronization) performing functional safety monitoring and cross-checking. Use Value: MPU enforces strict memory isolation between safety and non-safety partitions; hardware watchdog with TPU ensures timely fault escalation. |
Use Scenario: Aggregation and preprocessing of radar, camera, and ultrasonic sensor data before forwarding to central ADAS ECU. IC Role / Device Role / Timing Role: High-bandwidth I/O hub managing 12-channel serial interfaces (LIN, UART, CSIO) and CAN FD-ready messaging. Use Value: 48-channel ADC supports simultaneous analog sensor inputs (e.g., temperature, voltage, current); 176-pin LQFP provides routing flexibility for high-density sensor board layouts. |
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, 120 MHz max, 2 MB flash, no integrated FPU; uses separate safety monitor core | Targeted at higher ASIL-D systems requiring dual-core lockstep; lacks on-chip WorkFlash and subclock RTC calibration | Select for ASIL-D brake control where hardware redundancy is mandated; avoid if FPU or flexible RTC calibration is required. |
| S32K144 | ARM Cortex-M4F core, 112 MHz, 512 KB flash, 128 KB RAM, FPU, but only dual CAN and 16-channel ADC | Optimized for body electronics and gateway functions; lower GPIO count (100 pins) and no PPG waveform generator | Select for cost-sensitive body control modules; avoid for high-channel motor control or LED driver applications requiring >32 PPG outputs. |
Compared with RH850/F1K and S32K144, the CY91F526BSDPMC1-GSE1 delivers superior peripheral density (48 ADC channels, 48 PPG outputs, triple CAN), on-die subclock calibration for RTC accuracy, and integrated WorkFlash for robust firmware update storage - making it optimal for mid-tier powertrain and chassis controllers requiring high I/O flexibility without full ASIL-D redundancy overhead.
Availability
CY91F526BSDPMC1-GSE1 is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, brake-by-wire modules, and ADAS sensor hubs requiring stable component supply across extended automotive lifecycles.
Supply support for CY91F526BSDPMC1-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 AG is a German semiconductor manufacturer specializing in power management, automotive, 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 powertrain and chassis control applications demanding high reliability, ECC memory, and integrated safety peripherals - targeting ASIL-B compliance without external safety monitors.
FAQ
What is the maximum operating frequency and corresponding instruction cycle time?
The CY91F526BSDPMC1-GSE1 achieves a maximum operating frequency of 80 MHz using its on-chip PLL with 20× multiplication from a 4.0 MHz crystal. This yields a minimum instruction execution time of 12.5 ns per cycle, verified in the electrical characteristics section (Page 133) of Document 002-04662 Rev. *I.
Does this MCU support CAN FD or only classical CAN 2.0B?
This device supports only classical CAN 2.0B protocol across its three CAN controllers, with maximum bit rates up to 1 Mbps. It does not implement CAN FD features such as flexible data-rate or extended payload length; CAN FD capability requires newer Infineon families like the AURIX TC3xx series.
How is flash memory organized, and what is the purpose of WorkFlash?
Flash is partitioned into 1024 KB program memory and 64 KB dedicated WorkFlash. WorkFlash serves as EEPROM-emulation storage for calibration data, NV parameters, and firmware update staging - accessed via dedicated API with wear-leveling and ECC protection, distinct from main program flash.
Is the 176-pin LQFP package lead-free and RoHS compliant?
Yes, the CY91F526BSDPMC1-GSE1 uses a lead-free, RoHS-compliant LQFP-176 package with matte tin finish, confirmed in Infineon's packaging specification document INFINEON-PKG-LQFP-176 and the "Sales, Solutions, and Legal Information" section (Page 281) of the datasheet.
CY91F526BSDPMC1-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:
CY91F526BSDPMC1-GSE1 FAQ
1.How can I place an order for CY91F526BSDPMC1-GSE1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526BSDPMC1-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 CY91F526BSDPMC1-GSE1 reliable?
The price and inventory of CY91F526BSDPMC1-GSE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526BSDPMC1-GSE1 is usually 5 days.
3.What payment methods are accepted for CY91F526BSDPMC1-GSE1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526BSDPMC1-GSE1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526BSDPMC1-GSE1?
CY91F526BSDPMC1-GSE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526BSDPMC1-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 CY91F526BSDPMC1-GSE1?
For technical support, including CY91F526BSDPMC1-GSE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526BSDPMC1-GSE1 requirements.
6.How does Aetrix verify that CY91F526BSDPMC1-GSE1 is sourced from the original manufacturer or authorized distributors?
All CY91F526BSDPMC1-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 CY91F526BSDPMC1-GSE1 meets industry standards.
7.What is the process for return or replacement of CY91F526BSDPMC1-GSE1?
All CY91F526BSDPMC1-GSE1 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526BSDPMC1-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 CY91F526BSDPMC1-GSE1 part is unused and in its original packaging.
Return procedure for CY91F526BSDPMC1-GSE1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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