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Infineon Technologies CY91F525FSDPMC-GS-ERE2
- Part No.:
- CY91F525FSDPMC-GS-ERE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY91F525FSDPMC-GS-ERE2.pdf
- Description:
- IC MCU 32BIT 832KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,182
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Product details
Overview
CY91F525FSDPMC-GS-ERE2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S automotive microcontroller with 768 KB + 64 KB program flash, 96 KB main RAM + 8 KB backup RAM, and integrated CAN 2.0B controllers (3 channels, up to 1 Mbps). It features IEEE 754-compliant FPU, memory protection unit (MPU), and operates from -40 °C to +125 °C for engine control and body electronics.
For engineers reviewing the CY91F525FSDPMC-GS-ERE2 datasheet, CY91F525FSDPMC-GS-ERE2 pinout, CY91F525FSDPMC-GS-ERE2 application, or CY91F525FSDPMC-GS-ERE2 equivalent, key selection criteria include its 100-pin LQFP package, dual 12-bit ADC (max 48 ch), LIN 2.1 support, RTC with sub-clock calibration, and hardware watchdog with configurable timeout.
Technical Context
The CY91F525FSDPMC-GS-ERE2 implements the FR81S 32-bit RISC core with 5-stage pipeline, 80 MHz max operation (via PLL ×20 from 4 MHz source), and Harvard architecture enabling concurrent instruction/data access. It integrates dual 12-bit successive-approximation ADCs (1.4 μs conversion), two 8-bit D/A converters, and three independent CAN controllers with 128-message buffer (ch.0) and 64-message buffers (ch.1/ch.2).
Peripheral subsystems include 12-channel multi-function serial interface (UART/CSIO/LIN/I²C), 48-channel PPG for LED drive and timing, RTC with sub-oscillator calibration, and low-power modes (Stop, Sleep, Watch) supporting automotive ASIL-B–aligned system design. The device uses 90 nm CMOS process and supports 2.7–5.5 V supply with internal 1.2 V regulator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | FR81S 32-bit RISC, 5-stage pipeline, 80 MHz max (12.5 ns min instruction cycle) |
| Memory | 768 KB + 64 KB program flash, 64 KB WorkFlash, 96 KB main RAM + 8 KB backup RAM |
| ADC/DAC | 12-bit SAR ADC (48 ch total, 1.4 μs conversion), 8-bit R-2R DAC (2 ch) |
| CAN Interface | 3 CAN 2.0B channels: ch.0 (128 msg buffers), ch.1/ch.2 (64 msg buffers each), up to 1 Mbps |
| Package & Temp | 100-pin LQFP (14 × 14 mm), -40 °C to +125 °C ambient operating range |
| Power & Safety | 2.7–5.5 V supply, internal 1.2 V regulator, MPU, ECC on flash/RAM, hardware/software watchdog |
| Peripherals | LIN 2.1 (3 ch), I²C (8 ch), UART/CSIO (12 ch total), RTC with sub-clock calibration, CRC engine |
Pinout & Package
Package: 100-pin LQFP (14 mm × 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 domain pins with dedicated analog/digital separation for noise immunity |
| XTAL1/XTAL2 | Main oscillator input/output | Supports 4–16 MHz crystal; enables PLL clock multiplication (×1 to ×20) |
| OSC32IN/OSC32OUT | Sub-oscillator input/output | 32 kHz crystal connection for RTC and low-power mode timing |
| CAN0TX/CAN0RX | CAN channel 0 differential signal pair | Direct connection to external CAN transceiver; supports 1 Mbps data rate |
| AD00–AD47 | Analog input channels | 48 dedicated ADC input pins mapped across GPIO ports with programmable sampling control |
| DA0/DA1 | Digital-to-analog outputs | Two 8-bit voltage-output DACs for sensor biasing or actuator reference generation |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external reset assertion or power-on reset |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE 754-compliant 32-bit FPU with 16×32-bit registers; enables real-time motor control math without software emulation |
| Memory protection unit (MPU) | 8 configurable protection areas with privilege/user mode access control; isolates firmware partitions in safety-critical applications |
| Real-time clock (RTC) calibration | Sub-oscillator drift compensation via programmable prescaler; maintains ±1 ppm accuracy over temperature for time-stamped logging |
| Multi-function serial interface | 12-channel flexible UART/CSIO/LIN controller with 64-deep TX/RX FIFOs and DMA support; reduces CPU load in protocol-heavy systems |
| Low-voltage detection (LVD) | Dual LVD circuitry monitoring both external supply (2.8 V ±8%) and internal rail; triggers safe shutdown 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 engines. IC Role / Device Role / Timing Role: Primary MCU executing closed-loop control algorithms with deterministic 12.5 ns instruction timing and hardware FPU acceleration. Use Value: Enables sub-millisecond PID loop execution and synchronized ADC sampling across 48 engine sensors without CPU bottleneck. |
Use Scenario: Centralized management of door locks, lighting, window lift, and HVAC in premium vehicles. IC Role / Device Role / Timing Role: System coordinator interfacing with LIN slaves (door modules), CAN clusters, and analog sensors (ambient light, temp). Use Value: Integrates 3 CAN channels, 8 I²C ports, and LIN 2.1 in one die-eliminates external bus bridges and reduces BOM count by 2+ ICs. |
| 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 ADAS domain controller. IC Role / Device Role / Timing Role: High-integrity peripheral hub with ECC-protected RAM/flash and MPU-enforced memory isolation between sensor domains. Use Value: Meets ISO 26262 ASIL-B requirements via built-in safety mechanisms-no external safety monitor needed for sensor fusion layer. |
Use Scenario: Torque assist calculation, motor phase commutation, and fault response in 12 V EPS systems. IC Role / Device Role / Timing Role: Real-time motor controller with 48-channel PPG for PWM generation and 16-bit free-run timers for precise angle tracking. Use Value: Delivers <1 μs jitter on 20 kHz motor PWM outputs using hardware PPG-critical for smooth torque delivery and acoustic noise reduction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RH850/F1K | 400 MHz dual-core, 2 MB flash, no integrated FPU; requires external floating-point coprocessor | Targeted at higher-ASIL D systems with dual-lockstep cores; lacks LIN 2.1 hardware acceleration | Select when functional safety certification (ISO 26262 ASIL-D) is mandatory and computational throughput >2× required |
| S32K144 | ARM Cortex-M4F core, 512 KB flash, 128 KB RAM, single CAN FD channel, no sub-oscillator RTC calibration | Optimized for entry-level vehicle networking; missing 48-channel PPG and dual 12-bit ADC concurrency | Select for cost-sensitive gateway modules where CAN FD upgrade path is prioritized over analog sensing density |
Compared with RH850/F1K and S32K144, the CY91F525FSDPMC-GS-ERE2 delivers superior analog integration (48 ADC ch, 2 DAC), deterministic real-time performance (12.5 ns cycle), and automotive-grade RTC calibration-making it optimal for mid-tier ECU and BCM designs requiring high peripheral concurrency without safety-certified dual cores.
Availability
CY91F525FSDPMC-GS-ERE2 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 CY91F525FSDPMC-GS-ERE2 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.
This device belongs to the CY91520 series-a family of FR81S-based 32-bit microcontrollers engineered for automotive body, chassis, and powertrain applications demanding high reliability, mixed-signal integration, and extended temperature operation.
FAQ
What is the maximum operating frequency and how is it achieved?
The CY91F525FSDPMC-GS-ERE2 achieves 80 MHz maximum operation using its on-chip PLL with multiplication factor up to ×20, driven by an external 4.0 MHz crystal connected to XTAL1/XTAL2. This yields a 12.5 ns minimum instruction execution time and full utilization of the 5-stage pipeline without wait states.
Does this MCU support CAN FD or only classical CAN 2.0B?
This MCU supports only classical CAN 2.0B across all three channels, with data rates up to 1 Mbps. It does not implement CAN FD features such as flexible data-rate switching or extended payload length. CAN FD capability requires migration to Infineon's newer AURIX™ or Traveo™ II families.
How is the 64 KB WorkFlash used, and is it EEPROM-emulated?
The 64 KB WorkFlash is a dedicated, independently erasable flash bank used for non-volatile data storage (e.g., calibration tables, odometer values). It supports byte-write emulation via firmware routines and includes ECC protection-functionally equivalent to EEPROM but implemented in flash silicon for higher endurance and lower cost.
What debug interface is supported, and is JTAG available?
The device supports On-Chip Debug (OCD) via SWD (Serial Wire Debug) interface only-not full JTAG. Pin mapping uses dedicated SWDIO and SWCLK pins, compatible with standard ARM Cortex debug probes. OCD provides full breakpoint, watchpoint, and memory access capabilities per the FR81S architecture specification.
CY91F525FSDPMC-GS-ERE2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Series:
- FR MB91520
- Packaging:
- Tape & Reel (TR)
- 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:
- 832KB (832K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 64K x 8
- RAM Size:
- 102K 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:
CY91F525FSDPMC-GS-ERE2 FAQ
1.How can I place an order for CY91F525FSDPMC-GS-ERE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY91F525FSDPMC-GS-ERE2 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 CY91F525FSDPMC-GS-ERE2 reliable?
The price and inventory of CY91F525FSDPMC-GS-ERE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY91F525FSDPMC-GS-ERE2 is usually 5 days.
3.What payment methods are accepted for CY91F525FSDPMC-GS-ERE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY91F525FSDPMC-GS-ERE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY91F525FSDPMC-GS-ERE2?
CY91F525FSDPMC-GS-ERE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY91F525FSDPMC-GS-ERE2 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 CY91F525FSDPMC-GS-ERE2?
For technical support, including CY91F525FSDPMC-GS-ERE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY91F525FSDPMC-GS-ERE2 requirements.
6.How does Aetrix verify that CY91F525FSDPMC-GS-ERE2 is sourced from the original manufacturer or authorized distributors?
All CY91F525FSDPMC-GS-ERE2 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 CY91F525FSDPMC-GS-ERE2 meets industry standards.
7.What is the process for return or replacement of CY91F525FSDPMC-GS-ERE2?
All CY91F525FSDPMC-GS-ERE2 units undergo pre-shipment inspection (PSI). If there is an issue with CY91F525FSDPMC-GS-ERE2, 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 CY91F525FSDPMC-GS-ERE2 part is unused and in its original packaging.
Return procedure for CY91F525FSDPMC-GS-ERE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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