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Infineon Technologies CY91F526KSDPMC-GSE2
- Part No.:
- CY91F526KSDPMC-GSE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
CY91F526KSDPMC-GSE2.pdf
- Description:
- IC MCU 32B 1.0625MB FLSH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,397
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Product details
Overview
CY91F526KSDPMC-GSE2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S automotive microcontroller with 1024 KB + 64 KB program flash, 128 KB main RAM + 8 KB backup RAM, and integrated CAN 2.0B controllers (3 channels, up to 1 Mbps), FPU (IEEE 754 compliant), and MPU (8 protection areas). It operates at 80 MHz (12.5 ns instruction cycle) and supports -40 °C to +125 °C ambient temperature for engine control unit and body control module applications.
For engineers reviewing the CY91F526KSDPMC-GSE2 datasheet, CY91F526KSDPMC-GSE2 pinout, CY91F526KSDPMC-GSE2 application, or CY91F526KSDPMC-GSE2 equivalent, key selection criteria include its 120 GPIO count (118 with sub-oscillator), dual 12-bit ADC (max 48 channels total), LIN 2.1 support, RTC with subclock calibration, and 5 V tolerant I/O on designated UART/I²C channels.
Technical Context
The CY91F526KSDPMC-GSE2 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 supporting 1×–20× multiplication of 4–16 MHz main oscillation, plus a dedicated 100 kHz CR oscillator and sub-oscillator (32 kHz) with clock supervisor for failover.
Peripheral integration includes three independent CAN controllers (128/64 message buffers per channel), twelve multi-function serial interfaces (UART/CSIO/LIN/I²C), six waveform generators, and hardware CRC generation. Memory subsystem features ECC protection for both flash (program + WorkFlash) and RAM, alongside MPU-enforced privilege/user mode access control.
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 KB + 64 KB program flash, 64 KB WorkFlash, 128 KB main RAM + 8 KB backup RAM |
| ADC/DAC | 12-bit successive approximation ADC (48 ch total), 8-bit R-2R DAC (2 ch) |
| Connectivity | 3 × CAN 2.0B (1 Mbps), 12 × serial interfaces (UART/CSIO/LIN/I²C), 2 × I²C (std/fast mode) |
| Timers & PWM | 16-bit PPG × 48 ch, 16/32-bit free-run/reload timers, 6-channel waveform generator, 2 × up/down counters |
| Operating Range | -40 °C to +125 °C ambient, 2.7 V to 5.5 V supply, 5 V tolerant I/O on UART/I²C ch.6/8/9/11 |
| Security & Reliability | ECC on flash/RAM, MPU (8 regions, privilege/user mode), hardware/software watchdog, TPU, flash security lock |
Pinout & Package
Package: 176-pin LQFP (24 mm × 24 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| 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 robust EMC performance in automotive environments |
| XTAL1/XTAL2 | Main crystal oscillator input/output | Supports 4–16 MHz external crystal; enables PLL-based 80 MHz system clock generation |
| RTCX1/RTCX2 | Real-time clock crystal interface | Connects 32.768 kHz crystal for RTC operation; supports subclock calibration via prescaler |
| CAN0TX/CAN0RX | CAN channel 0 differential transceiver interface | Dedicated pins for CAN 2.0B physical layer; require external transceiver for bus connection |
| P00–P119 | General-purpose I/O (GPIO) | 120 configurable ports; 118 available when sub-oscillator enabled; include 5 V tolerant inputs on UART/I²C channels |
| AD00–AD47 | Analog input channels | 48 dedicated ADC input pins mapped across two 12-bit units; support simultaneous sampling in multi-unit configuration |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE 754-compliant 32-bit FPU with 16-register file; enables deterministic real-time motor control math without software emulation |
| Memory protection unit (MPU) | 8 programmable memory regions with privilege/user mode access control; prevents unauthorized code/data access in ASIL-B systems |
| Clock supervision | Dual-clock monitoring (main 4 MHz + sub 32 kHz); automatic switch to 100 kHz CR oscillator upon failure; supports fail-safe ECU boot |
| LIN 2.1 controller | Hardware-assisted LIN protocol stack with synch break/delimiter generation, framing error detection, and DMA-supported transfers |
| WorkFlash memory | 64 KB dedicated data flash with ECC and erase/write endurance optimized for parameter storage and OTA update logging |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Real-time fuel injection timing, spark advance calculation, and OBD-II diagnostics in gasoline/diesel powertrains. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop control algorithms using FPU-accelerated math and synchronized ADC sampling across 48 channels. Use Value: 80 MHz deterministic execution and 12.5 ns instruction cycle enable sub-millisecond control loop response under ASIL-B requirements. |
Use Scenario: Centralized management of door locks, lighting, wipers, and HVAC via LIN/CAN networks in premium vehicle platforms. IC Role / Device Role / Timing Role: Hub controller interfacing with 12+ LIN slaves and 3 CAN nodes while maintaining RTC-synchronized event logging. Use Value: Integrated LIN 2.1 hardware assist and 120 GPIO allow direct peripheral drive without external logic, reducing BOM cost and PCB area. |
| 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-critical sensor fusion with CRC-protected data integrity checks. Use Value: Hardware CRC generator and ECC-protected RAM/flash ensure functional safety compliance (ISO 26262 ASIL-B) for sensor data path. |
Use Scenario: Torque assist control, motor position feedback processing, and fault handling in brushless EPS systems. IC Role / Device Role / Timing Role: Safety-critical actuator controller running motor control loops with PPG-driven PWM outputs and ADC-sampled current/voltage feedback. Use Value: 48-channel 12-bit ADC with 1.4 μs conversion time and PPG with 16-bit resolution enable precise 10 kHz field-oriented control. |
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/F1L | 32-bit RXv2 core, 120 MHz max, 1.5 MB flash, no integrated FPU; uses separate safety monitor core | Lacks IEEE 754 FPU and WorkFlash; requires external safety co-processor for ASIL-D decomposition | Select when higher clock speed and larger flash are prioritized over integrated floating-point math and data logging capability |
| S32K144 | Cortex-M4F core, 112 MHz, 512 KB flash, integrated FPU, but only 1 CAN channel and 48 GPIO | Lower peripheral count and smaller memory footprint; lacks subclock RTC calibration and hardware LIN assist | Prefer for cost-sensitive entry-level ADAS modules where full 3-CAN and 120 GPIO are unnecessary |
Compared with RH850/F1L and S32K144, the CY91F526KSDPMC-GSE2 delivers unique integration of FPU, 3-CAN, LIN 2.1 assist, and 120 GPIO in a single 176-pin package-enabling consolidated ECU designs without external glue logic or companion MCUs.
Availability
CY91F526KSDPMC-GSE2 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 CY91F526KSDPMC-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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive, and industrial control ICs with strong functional safety and reliability focus.
This device belongs to the CY91520 series-a high-integration FR81S-based automotive MCU family designed specifically for ASIL-B compliant powertrain and chassis applications with demanding real-time, safety, and connectivity requirements.
FAQ
What is the maximum operating frequency and associated instruction cycle time?
The CY91F526KSDPMC-GSE2 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, confirmed in the datasheet's Electrical Characteristics section (Page 133, Table 11-1). The FR81S core executes most instructions in one cycle due to its 5-stage pipeline and 16-bit fixed-length encoding.
Does this MCU support hardware-based LIN communication, and which protocol versions are implemented?
Yes, the CY91F526KSDPMC-GSE2 integrates a dedicated LIN controller supporting LIN protocol revision 2.1 in both master and slave modes. It provides hardware synch break generation/detection, synch delimiter handling, framing/overrun error detection, and DMA transfer support. This is documented in Section 1.10 (Multi-function Serial Communication) and verified in the peripheral register map (Page 95).
How many CAN message buffers are allocated per channel, and what is the maximum bit rate?
The device implements three independent CAN 2.0B controllers: Channel 0 provides 128 message buffers (transmit/receive combined), while Channels 1 and 2 each provide 64 buffers. All channels support bit rates up to 1 Mbps under standard CAN physical layer conditions, as specified in Section 1.11 (CAN Controller) and confirmed in the electrical timing tables (Page 152).
Is the 64 KB WorkFlash memory electrically erasable and writable during normal operation?
Yes, the 64 KB WorkFlash is a dedicated data flash region supporting byte/word programming and sector erasure while the MCU is executing from main program flash. It includes ECC protection and is rated for 100,000 write/erase cycles, making it suitable for parameter storage, calibration data, and firmware update staging-details are in Section 8 (Memory Map) and Page 54 of the datasheet.
CY91F526KSDPMC-GSE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 144-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:
- 120
- 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:
CY91F526KSDPMC-GSE2 FAQ
1.How can I place an order for CY91F526KSDPMC-GSE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526KSDPMC-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 CY91F526KSDPMC-GSE2 reliable?
The price and inventory of CY91F526KSDPMC-GSE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526KSDPMC-GSE2 is usually 5 days.
3.What payment methods are accepted for CY91F526KSDPMC-GSE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526KSDPMC-GSE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526KSDPMC-GSE2?
CY91F526KSDPMC-GSE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526KSDPMC-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 CY91F526KSDPMC-GSE2?
For technical support, including CY91F526KSDPMC-GSE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526KSDPMC-GSE2 requirements.
6.How does Aetrix verify that CY91F526KSDPMC-GSE2 is sourced from the original manufacturer or authorized distributors?
All CY91F526KSDPMC-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 CY91F526KSDPMC-GSE2 meets industry standards.
7.What is the process for return or replacement of CY91F526KSDPMC-GSE2?
All CY91F526KSDPMC-GSE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526KSDPMC-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 CY91F526KSDPMC-GSE2 part is unused and in its original packaging.
Return procedure for CY91F526KSDPMC-GSE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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