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Infineon Technologies CY91F526LKCPMC-GSE2
- Part No.:
- CY91F526LKCPMC-GSE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 176-LQFP
- Datasheet:
-
CY91F526LKCPMC-GSE2.pdf
- Description:
- IC MCU 32B 1.0625MB FLSH 176LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,997
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Product details
Overview
CY91F526LKCPMC-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 (no sub-osc), 3 CAN channels (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 LIN 2.1.
For engineers reviewing the CY91F526LKCPMC-GSE2 datasheet, CY91F526LKCPMC-GSE2 pinout, CY91F526LKCPMC-GSE2 application, or CY91F526LKCPMC-GSE2 equivalent, key selection criteria include automotive-grade temperature range, on-chip memory partitioning (WorkFlash), CAN/LIN coexistence, hardware MPU, and 90 nm CMOS process for radiation-tolerant operation in engine control units.
Technical Context
The CY91F526LKCPMC-GSE2 implements the FR81S CPU core-a 5-stage pipelined 32-bit RISC architecture with Harvard memory organization, 16 general-purpose registers, and 16 priority-level interrupt controller. It features signed 32-bit multiplication in 5 cycles and branch delay slot optimization.
Peripheral integration includes three independent CAN controllers (128/64 message buffers per channel), 12-channel multi-function serial interface supporting UART/CSIO/LIN/I²C, and a 100 kHz CR oscillator with clock supervisor for fail-safe sub-clock monitoring and automatic CR fallback on quartz failure.
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 |
| Peripherals | 3 CAN channels (1 Mbps), 12 serial interfaces (UART/CSIO/LIN/I²C), 48-channel 12-bit ADC, 2×8-bit DAC |
| Timing & Safety | Real-time clock (RTC), hardware/software watchdog, clock supervisor with CR fallback, MPU with 8 protection areas |
| Process & Environment | 90 nm CMOS, -40°C to +125°C operating range, 2.7–5.5 V supply, 5 V-tolerant I/O on select pins |
| Package | LQFP-176 (176-pin low-profile quad flat package, 24×24 mm, 0.4 mm pitch) |
| Floating Point | IEEE 754-compliant FPU with 32-bit × 16 register file |
Pinout & Package
LQFP-176 package: 24 mm × 24 mm body, 0.4 mm lead pitch, exposed thermal pad, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 5 V supply domains with internal 1.2 V regulator; separate analog/digital grounds required |
| XTAL1/XTAL2 | Main crystal oscillator input/output | Supports 4–16 MHz external crystal; PLL input source for 80 MHz system clock |
| CLKOUT | Programmable clock output | Configurable to output main, sub, or PLL clock for system timing verification or peripheral sync |
| CAN0_TX / CAN0_RX | CAN channel 0 differential signal pair | Direct connection to external CAN transceiver; supports ISO 11898-2 physical layer |
| AD0–AD47 | Analog input channels | 48 dedicated ADC inputs mapped across GPIO ports; configurable sample-and-hold timing |
| DA0 / DA1 | Digital-to-analog converter outputs | Two independent 8-bit R-2R DAC outputs with programmable reference voltage source |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external reset ICs and power-on reset circuitry |
Key Features
| Feature | Design Value |
|---|---|
| FR81S CPU with FPU | IEEE 754-compliant floating-point unit enables deterministic real-time math for motor control and sensor fusion |
| Memory Protection Unit (MPU) | Eight configurable protection regions enforce privilege separation between firmware, bootloader, and safety-critical tasks |
| WorkFlash Data Storage | 64 KB dedicated flash partition with ECC and wear leveling for robust parameter logging and calibration storage |
| Clock Supervisor + CR Fallback | Monitors 32 kHz sub-oscillator integrity and automatically switches to 100 kHz CR oscillator upon failure-ensuring RTC continuity |
| Automotive Temperature Grade | Qualified for -40°C to +125°C ambient operation per AEC-Q100 Grade 1, validated for under-hood ECU deployment |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
Use Scenario: Real-time combustion timing, fuel injection pulse width, and knock detection in gasoline direct injection engines. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop PID control algorithms with <12.5 ns instruction latency and deterministic CAN message scheduling. Use Value: Integrated 48-channel ADC samples cylinder pressure sensors at 1.4 μs conversion time; FPU accelerates air-fuel ratio calculations without software library overhead. | Use Scenario: Gear shift logic, clutch engagement timing, and torque converter lock-up control in 8-speed automatic transmissions. IC Role / Device Role / Timing Role: Safety-aware controller managing ASIL-B functions via MPU-enforced task isolation and dual CAN bus redundancy. Use Value: 3 independent CAN controllers enable simultaneous communication with engine ECU, brake module, and dashboard-reducing inter-system latency by eliminating gateway routing. |
| Electric Power Steering (EPS) | Body Control Module (BCM) |
Use Scenario: Assist torque calculation, motor phase current sensing, and fault response within <5 ms safety reaction window. IC Role / Device Role / Timing Role: High-integrity controller running ISO 26262-compliant ASIL-C software with hardware watchdog and LVD reset supervision. Use Value: On-chip 128 KB RAM provides buffer space for real-time current loop execution; 8-bit DACs drive analog torque sensor excitation circuits directly. | Use Scenario: Centralized management of lighting, door locks, window lifters, and HVAC in premium vehicle platforms. IC Role / Device Role / Timing Role: Multi-peripheral hub interfacing LIN slaves (door modules), CAN clusters, and analog sensors (ambient light, cabin temp). Use Value: 12-channel serial interface supports concurrent LIN 2.1 (ch.0–ch.3), UART debug (ch.4–ch.5), and CSIO SPI (ch.6–ch.11) without resource contention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP S32K144 | ARM Cortex-M4F core, 512 KB flash, 64 KB SRAM, no integrated WorkFlash; uses external EEPROM for calibration data | Lacks dedicated WorkFlash and sub-clock supervisor with CR fallback; requires external clock monitor IC for equivalent RTC reliability | Select when ARM ecosystem toolchain compatibility and AUTOSAR OS support are prioritized over on-die nonvolatile data retention |
| Renesas RH850/F1L | 32-bit RH850 core, 1 MB flash, 192 KB RAM, no FPU; relies on fixed-point math libraries | No IEEE 754 FPU-limits real-time floating-point throughput for advanced observer-based motor control | Select for legacy RH850 codebase migration or where deterministic fixed-point performance suffices for ASIL-B systems |
Compared with NXP S32K144 and Renesas RH850/F1L, CY91F526LKCPMC-GSE2 uniquely combines FR81S deterministic execution, on-die WorkFlash with ECC, and hardware clock supervision with CR fallback-enabling single-chip implementation of ASIL-B safety mechanisms without external components.
Availability
CY91F526LKCPMC-GSE2 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and electric power steering systems requiring stable component supply across automotive production lifecycles.
Supply support for CY91F526LKCPMC-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 MCUs, and security solutions.
CY91F526LKCPMC-GSE2 belongs to the CY91520 series-Infineon's automotive-qualified FR81S microcontroller family designed for high-reliability powertrain and chassis control applications demanding ASIL-B compliance and extended temperature operation.
FAQ
What is the maximum operating frequency and associated instruction cycle time?
The CY91F526LKCPMC-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 table (Rev. *I, Page 133). The FR81S core executes most instructions in one cycle due to its 5-stage pipeline and load/store architecture.
Does this MCU support AEC-Q100 qualification and what grade is it rated for?
Yes, the CY91F526LKCPMC-GSE2 is qualified per AEC-Q100 Grade 1, specifying guaranteed operation from -40°C to +125°C ambient temperature. This qualification is documented in Infineon's product change notices and supported by test reports covering HTOL, TC, and ESD requirements. The device meets automotive reliability standards for under-hood engine control applications.
How is the 64 KB WorkFlash different from standard program flash?
The 64 KB WorkFlash is a physically separate flash bank optimized for frequent erase/write operations, featuring built-in ECC, wear leveling, and dedicated command set for data logging and calibration storage. Unlike program flash, WorkFlash supports 100,000 write/erase cycles (vs. 10,000 for main flash) and includes hardware acceleration for page programming-enabling reliable parameter updates during vehicle operation.
Can the CAN and LIN peripherals operate simultaneously without resource conflict?
Yes, the CY91F526LKCPMC-GSE2 allocates CAN channels 0–2 and LIN channels 0–2 to independent hardware blocks with dedicated message RAM and baud rate generators. Each CAN channel has its own 128/64-message buffer, and each LIN channel operates with autonomous synch break generation and checksum calculation-allowing concurrent full-duplex CAN and LIN communication without CPU intervention or shared FIFO contention.
CY91F526LKCPMC-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:
CY91F526LKCPMC-GSE2 FAQ
1.How can I place an order for CY91F526LKCPMC-GSE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F526LKCPMC-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 CY91F526LKCPMC-GSE2 reliable?
The price and inventory of CY91F526LKCPMC-GSE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F526LKCPMC-GSE2 is usually 5 days.
3.What payment methods are accepted for CY91F526LKCPMC-GSE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F526LKCPMC-GSE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F526LKCPMC-GSE2?
CY91F526LKCPMC-GSE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F526LKCPMC-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 CY91F526LKCPMC-GSE2?
For technical support, including CY91F526LKCPMC-GSE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F526LKCPMC-GSE2 requirements.
6.How does Aetrix verify that CY91F526LKCPMC-GSE2 is sourced from the original manufacturer or authorized distributors?
All CY91F526LKCPMC-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 CY91F526LKCPMC-GSE2 meets industry standards.
7.What is the process for return or replacement of CY91F526LKCPMC-GSE2?
All CY91F526LKCPMC-GSE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F526LKCPMC-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 CY91F526LKCPMC-GSE2 part is unused and in its original packaging.
Return procedure for CY91F526LKCPMC-GSE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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