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Infineon Technologies CY91F526LWCPMC-GSE2
- Part No.:
- CY91F526LWCPMC-GSE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 176-LQFP
- Datasheet:
-
CY91F526LWCPMC-GSE2.pdf
- Description:
- IC MCU 32B 1.0625MB FLSH 176LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,169
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Product details
Overview
CY91F526LWCPMC-GSE2 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, 152 GPIOs, triple CAN 2.0B controllers (up to 1 Mbps), and IEEE 754-compliant FPU. It operates at 80 MHz (12.5 ns instruction cycle), supports -40°C to +125°C, and integrates RTC, 12-bit ADC (48 ch), dual 8-bit DAC, and hardware watchdog - deployed in engine control units and body domain controllers.
For engineers reviewing the CY91F526LWCPMC-GSE2 datasheet, CY91F526LWCPMC-GSE2 pinout, CY91F526LWCPMC-GSE2 application, or CY91F526LWCPMC-GSE2 equivalent, key selection criteria include CAN channel count, flash/RAM sizing, sub-oscillator support, LQFP-176 package compatibility, and AEC-Q100 Grade 1 qualification for automotive powertrain systems.
Technical Context
The CY91F526LWCPMC-GSE2 implements the FR81S 32-bit RISC core with 5-stage pipeline, Harvard architecture, and MPU-enforced privilege separation (user/privilege modes). It delivers deterministic 80 MHz operation via on-chip PLL (×20 multiplication from 4 MHz crystal) and includes dedicated baud rate generators for UART, CSIO, LIN, and I²C peripherals.
Its peripheral set targets automotive real-time control: triple CAN controllers with 128-message buffer (ch.0) and 64-message buffers (ch.1/ch.2), 48-channel PPG for LED/actuator timing, 12-channel multi-function serial interface supporting LIN 2.1, and dual 8-bit R-2R DACs for analog actuation feedback.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | FR81S 32-bit RISC, 5-stage pipeline, 80 MHz max (12.5 ns cycle), IEEE 754 FPU, 16 GPRs |
| Memory | 1024+64 KB program flash + 64 KB WorkFlash; 128 KB main RAM + 8 KB backup RAM; ECC on flash & RAM |
| Peripherals | 3× CAN 2.0B (1 Mbps); 12× serial interfaces (UART/CSIO/LIN/I²C); 12-bit ADC (48 ch, 1.4 μs); 2× 8-bit DAC |
| Timing & Control | RTC with subclock calibration; 48× PPG channels; 3× 32-bit free-run timers; 2× up/down counters; 16-channel DMA |
| Package & Environment | LQFP-176 (24×24 mm), 0.5 mm pitch; AEC-Q100 Grade 1 (-40°C to +125°C); 5 V supply with internal 1.2 V regulator |
| Power Management | Sleep/Stop/Watch/Sub RUN modes; hardware/software watchdog; clock supervisor with CR oscillator fallback |
| Security & Reliability | MPU (8 protection areas); flash security lock; CRC generator; TPU; key code register; LVD reset (2.8 V ±8%) |
Pinout & Package
LQFP-176 package (24 mm × 24 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3. Pinout validated per Infineon datasheet 002-04662 Rev. *I, pages 12–17.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply / Ground | 5 V main supply pins; multiple VDD/VSS pairs ensure low-noise operation and EMI resilience in automotive harnesses |
| XTAL1/XTAL2 | Main crystal oscillator input/output | 4–16 MHz crystal connection; enables PLL-based 80 MHz system clock generation with SSCG jitter suppression |
| CLKIN, CLKOUT | External clock input / output | Accepts external clock source (e.g., from CAN transceiver or master clock); CLKOUT provides buffered system clock for sync |
| CAN0_TX, CAN0_RX | CAN channel 0 differential signal pair | Dedicated pins for CAN 2.0B high-speed (1 Mbps) communication; compatible with ISO 11898-2 transceivers |
| AD0–AD47 | Analog input channels | 48-channel 12-bit ADC inputs; mapped across multiple ports with programmable sampling triggers and DMA linkage |
| DA0, DA1 | Digital-to-analog converter outputs | Two independent 8-bit R-2R DAC outputs for analog sensor simulation or actuator biasing in closed-loop control |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; asserted during power-on reset, LVD, watchdog timeout, or clock failure |
| TRST, TDI, TDO, TCK, TMS | JTAG debug interface | 5-pin OCD (On-Chip Debug) interface supporting boundary scan, flash programming, and real-time trace |
Key Features
| Feature | Design Value |
|---|---|
| Triple CAN 2.0B Controller | Independent message RAM allocation (128/64/64 messages); mailbox-based TX/RX with error counters and loopback test mode |
| Hardware CRC Generator | Configurable polynomial (CRC-16/CRC-32); accelerates firmware integrity checks and CAN message CRC without CPU load |
| Real-Time Clock with Subclock Calibration | Compensates for 32 kHz crystal drift using main clock ratio correction; maintains ±1 ppm accuracy over temperature |
| Memory Protection Unit (MPU) | Eight configurable regions enforcing read/write/execute permissions in user/privilege modes; prevents stack overflow and rogue pointer access |
| Multi-Function Serial Interface | 12-channel shared peripheral supporting UART (LIN 2.1), SPI (CSIO), and I²C (6 ch standard mode, 2 ch fast mode) with FIFO and DMA |
| Low-Voltage Detection Reset | Dual LVD circuit monitors both external supply (2.8 V ±8%) and internal regulated voltage; generates immediate reset before functional 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 powertrains. IC Role / Device Role / Timing Role: Primary controller executing safety-critical ASIL-B software with triple CAN for sensor fusion and actuator coordination. Use Value: 80 MHz deterministic execution, ECC memory, and MPU isolation ensure compliance with ISO 26262 requirements while managing 48 ADC channels and 3 CAN buses. |
Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC in premium vehicle platforms. IC Role / Device Role / Timing Role: Domain controller interfacing with LIN slaves (mirrors, seats) and CAN backbone via three independent CAN channels. Use Value: Integrated LIN 2.1 support, 152 GPIOs for discrete I/O expansion, and RTC-backed event scheduling enable feature-rich, low-power body electronics. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Electric Power Steering (EPS) Controller |
|
Use Scenario: Aggregating radar, camera, and ultrasonic sensor data for object detection and path planning pre-fusion. IC Role / Device Role / Timing Role: High-bandwidth data concentrator with 12 serial interfaces and 16-channel DMA moving sensor frames to external processor. Use Value: Dual 8-bit DACs generate reference voltages for analog sensor conditioning; 12.5 ns instruction cycle ensures sub-millisecond latency for time-critical interrupts. |
Use Scenario: Closed-loop torque assist control with motor current sensing, position feedback, and fail-safe torque reduction. IC Role / Device Role / Timing Role: Safety-redundant controller running ASIL-C algorithms with hardware watchdog, clock supervisor, and ECC RAM. Use Value: 48-channel PPG drives PWM for motor phase control; 12-bit ADC samples current sensors at 1.4 μs resolution; sub-oscillator-calibrated RTC enables precise fault logging timestamps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SPC5744PFK1AKLQ | Power Architecture e200z4, 180 MHz; 2 MB flash; integrated ADC/DAC; no FPU; QFP-176 | Targeted at powertrain with higher compute but lacks IEEE 754 FPU and subclock RTC calibration | Select when prioritizing raw MIPS over floating-point math or precision RTC in non-safety-critical subsystems |
| TC377TP-64F200N | TriCore™ TC1.6P, 200 MHz; 4 MB flash; 512 KB RAM; 2× CAN FD; no WorkFlash or subclock calibration | Designed for high-end ADAS/EPS with CAN FD bandwidth; lacks dedicated WorkFlash and subclock drift compensation | Choose for CAN FD migration paths or when >128 KB RAM and 200 MHz deterministic performance outweigh subclock accuracy needs |
Compared with SPC5744PFK1AKLQ and TC377TP-64F200N, the CY91F526LWCPMC-GSE2 uniquely balances AEC-Q100 Grade 1 reliability, IEEE 754 FPU for model-based control, subclock-calibrated RTC for timestamped diagnostics, and 64 KB WorkFlash for secure OTA updates - making it optimal for cost-sensitive, functionally safe body and chassis ECUs.
Availability
CY91F526LWCPMC-GSE2 is available at Aetrix Electronics and suitable for engine control units, body control modules, electric power steering systems, and advanced driver assistance sensor hubs requiring stable component supply across automotive production lifecycles.
Supply support for CY91F526LWCPMC-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 German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global manufacturing and quality certification aligned to IATF 16949.
The CY91520 series - including CY91F526LWCPMC-GSE2 - was developed by Cypress (acquired by Infineon in 2020) specifically for AEC-Q100-compliant automotive microcontroller applications demanding real-time determinism, functional safety, and mixed-signal integration.
FAQ
Is CY91F526LWCPMC-GSE2 qualified to AEC-Q100 Grade 1?
Yes. The CY91F526LWCPMC-GSE2 is certified to AEC-Q100 Grade 1 (−40°C to +125°C ambient), with full characterization across temperature, voltage, and lifetime stress tests per the standard. Its qualification documentation is included in Infineon's official product change notification PCN-2021-0012 and datasheet revision *I.
Does this MCU support CAN FD or only classical CAN 2.0B?
The CY91F526LWCPMC-GSE2 supports only classical CAN 2.0B (ISO 11898-1) at up to 1 Mbps. It does not implement CAN FD protocol features such as flexible data-rate, extended data length, or CRC-17/21. Its three CAN controllers are fully compliant with Bosch CAN 2.0B specification and include message objects, acceptance filtering, and error confinement logic.
What is the purpose of the 64 KB WorkFlash memory?
The 64 KB WorkFlash is a dedicated, independently erasable flash bank used for storing calibrated parameters, diagnostic logs, OTA update images, or secure keys. Unlike main program flash, WorkFlash supports byte-level writes and wear leveling via firmware routines, enabling robust field updates and runtime data retention without disrupting application code execution.
Can the FR81S core execute code from RAM?
No. The FR81S core executes only from flash memory (including WorkFlash) due to its Harvard architecture and lack of instruction-fetch capability from RAM. Code must be loaded into flash; however, data buffers, stacks, and heap allocations reside in the 128 KB main RAM, which supports full read/write access with ECC checking.
CY91F526LWCPMC-GSE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 176-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, EBI/EMI, I2C, LINbus, SPI, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 152
- 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 48x12b SAR; D/A 2x8b R2R
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY91F526LWCPMC-GSE2 FAQ
1.How can I place an order for CY91F526LWCPMC-GSE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526LWCPMC-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 CY91F526LWCPMC-GSE2 reliable?
The price and inventory of CY91F526LWCPMC-GSE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526LWCPMC-GSE2 is usually 5 days.
3.What payment methods are accepted for CY91F526LWCPMC-GSE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526LWCPMC-GSE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526LWCPMC-GSE2?
CY91F526LWCPMC-GSE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526LWCPMC-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 CY91F526LWCPMC-GSE2?
For technical support, including CY91F526LWCPMC-GSE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526LWCPMC-GSE2 requirements.
6.How does Aetrix verify that CY91F526LWCPMC-GSE2 is sourced from the original manufacturer or authorized distributors?
All CY91F526LWCPMC-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 CY91F526LWCPMC-GSE2 meets industry standards.
7.What is the process for return or replacement of CY91F526LWCPMC-GSE2?
All CY91F526LWCPMC-GSE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526LWCPMC-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 CY91F526LWCPMC-GSE2 part is unused and in its original packaging.
Return procedure for CY91F526LWCPMC-GSE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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