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Infineon Technologies MB91F523BSCPMC1-GSE2
- Part No.:
- MB91F523BSCPMC1-GSE2
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MB91F523BSCPMC1-GSE2.pdf
- Description:
- IC MCU 32BIT 448KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,690
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Product details
Overview
MB91F523BSCPMC1-GSE2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S automotive microcontroller with 384 KB + 64 KB program flash, 48 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, MPU, RTC, and operates from −40 °C to +125 °C for engine control unit applications.
For engineers reviewing the MB91F523BSCPMC1-GSE2 datasheet, MB91F523BSCPMC1-GSE2 pinout, MB91F523BSCPMC1-GSE2 application, or MB91F523BSCPMC1-GSE2 equivalent, key selection criteria include CAN channel count, sub-oscillator support, LVD initial state, flash/RAM partitioning, and 176-pin LQFP package compatibility with automotive ECU board layouts.
Technical Context
The MB91F523BSCPMC1-GSE2 implements the FR81S 32-bit RISC core with 5-stage pipeline, 80 MHz max operation (via PLL ×20 from 4 MHz crystal), and Harvard architecture enabling concurrent instruction fetch and data access. It integrates dual A/D converters (12-bit, 48 total channels), two 8-bit D/A outputs, and three independent CAN controllers with 128-message buffer (ch.0) and 64-message buffers (ch.1/ch.2).
Peripheral subsystems include 16-channel DMA, 48-channel PPG, 6-channel waveform generator, RTC with sub-clock calibration, and clock supervisor with automatic CR oscillator fallback on main/sub oscillator failure. The device supports Sleep/Stop/Watch/Sub RUN low-power modes and includes ECC for flash and RAM, MPU with eight protection areas, and TPU for timing safety compliance.
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 time) |
| Memory | 384 KB + 64 KB program flash, 64 KB WorkFlash, 48 KB main RAM + 8 KB backup RAM |
| CAN Interface | 3 channels, CAN 2.0B compliant, up to 1 Mbps, 128/64 message buffers per channel |
| Analog Peripherals | 12-bit A/D converter (48 ch total), 8-bit D/A converter (2 ch), RTC with sub-clock calibration |
| Package & Temp | 176-pin LQFP (14 × 20 mm), −40 °C to +125 °C ambient operating range |
| Power & Safety | 5 V supply with internal 1.2 V regulator, ECC on flash/RAM, MPU, TPU, hardware/software watchdog |
Pinout & Package
MB91F523BSCPMC1-GSE2 is housed in a 176-pin LQFP package (14 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined across power, ground, clock, reset, debug (OCD), GPIO, peripheral I/O (CAN, LIN, UART, CSIO, I²C), and external bus interface signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dedicated pins for analog/digital domains; multiple VDD/VSS pairs ensure stable 5 V operation and noise immunity |
| CLKIN, CLKOUT | Main system clock input/output | Accepts 4–16 MHz crystal; CLKOUT provides buffered reference for trace/debug or secondary peripherals |
| OSC32KIN, OSC32KOUT | Sub-clock oscillator input/output | Connects 32.768 kHz crystal for RTC and low-power mode timing; enables sub-clock calibration via prescaler |
| CAN0TX, CAN0RX | CAN channel 0 differential transceiver I/O | Direct connection to external CAN transceiver; supports 1 Mbps bit rate with built-in protocol handling |
| TRST, TDI, TDO, TCK, TMS | JTAG/OCD debug interface | Enables full on-chip debugging, flash programming, and real-time trace without halting CPU execution |
| AD0–AD47 | Analog input channels | 48 dedicated pins for 12-bit successive-approximation A/D conversion; grouped into two 24-channel units with independent triggers |
Key Features
| Feature | Design Value |
|---|---|
| Floating-point unit (FPU) | IEEE 754-compliant 32-bit FPU with 16×32-bit registers; accelerates motor control and sensor fusion math |
| Memory protection unit (MPU) | Eight configurable protection areas with privilege/user mode access control; enforces ASIL-B software partitioning |
| Clock supervisor | Dual monitoring of main (4 MHz) and sub (32 kHz) oscillators; automatic failover to 100 kHz CR oscillator |
| Timing Protection Unit (TPU) | Hardware timer-based safety monitor for watchdog windowing and periodic task supervision per ISO 26262 |
| ECC memory protection | End-to-end error correction on program flash, WorkFlash, and RAM; detects/corrects single-bit errors, detects double-bit errors |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
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 closed-loop PID algorithms with deterministic 12.5 ns instruction timing and CAN-based sensor feedback. Use Value: Integrated 3-CAN interface enables direct communication with crankshaft/camshaft sensors, OBD-II, and actuator drivers without external bridge ICs. | Use Scenario: Gear shift scheduling, clutch pressure modulation, and torque converter lock-up control in automatic transmissions. IC Role / Device Role / Timing Role: Safety-critical timing controller with TPU and MPU enforcing ASIL-B runtime integrity during gear transitions. Use Value: Dual 12-bit A/D converters (48 ch) acquire throttle position, turbine speed, and hydraulic pressure simultaneously at ≤1.4 µs conversion time. |
| Electric Power Steering (EPS) | Brake Control Module (BCM) |
Use Scenario: Assist torque calculation, motor phase current sensing, and road feedback compensation in column- or rack-mounted EPS systems. IC Role / Device Role / Timing Role: High-precision motion controller using FPU for vector control math and PPG for PWM-driven 3-phase gate drivers. Use Value: 48-channel PPG with dead-time insertion and synchronous update ensures glitch-free motor commutation at 20 kHz switching frequency. | Use Scenario: ABS/EBD pressure modulation, brake-by-wire actuation, and vehicle stability control coordination. IC Role / Device Role / Timing Role: Fault-tolerant safety controller with dual CAN interfaces (one for chassis network, one for redundancy) and CRC-protected firmware updates. Use Value: Hardware watchdog with windowing (TPU) and ECC memory guarantee safe degradation to limp-home mode upon detected fault. |
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 |
|---|---|---|---|
| MB91F524BSCPMC1-GSE2 | 512 KB + 64 KB program flash, 64 KB main RAM; identical peripherals and pinout | Higher flash/RAM supports larger AUTOSAR OS stacks and OTA update partitions | Select when firmware complexity exceeds 384 KB or requires dual-bank flash for safe updates |
| MB91F523CSCPMC1-GSE2 | Same memory and peripherals but no sub-oscillator (OSC32KIN/OSC32KOUT omitted); LVD initial state disabled | RTC functionality unavailable; unsuitable for battery-backed timekeeping or low-power wake-from-sleep | Select only for cost-sensitive applications where RTC and sub-clock calibration are not required |
Compared with MB91F524BSCPMC1-GSE2, this part trades flash/RAM headroom for cost; compared with MB91F523CSCPMC1-GSE2, it retains full RTC and LVD functionality essential for ASIL-B time-critical systems.
Availability
MB91F523BSCPMC1-GSE2 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, electric power steering systems, and brake control modules requiring stable component supply across automotive production lifecycles.
Supply support for MB91F523BSCPMC1-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 security solutions with vertical integration from silicon to system-level IP.
This device belongs to the CY91520 series - Infineon's high-integrity FR81S-based microcontroller family designed specifically for ASIL-B automotive powertrain and chassis applications requiring functional safety, real-time determinism, and long-term supply stability.
FAQ
What is the maximum operating frequency and clock source configuration for MB91F523BSCPMC1-GSE2?
The device achieves 80 MHz maximum CPU frequency using its on-chip PLL with ×20 multiplication from a 4.0 MHz external crystal. It supports main oscillation (4–16 MHz), sub-oscillation (32.768 kHz), and a built-in 100 kHz CR oscillator. Clock supervisor monitors both main and sub oscillators and automatically switches to the CR oscillator upon failure.
Does MB91F523BSCPMC1-GSE2 support ISO 26262 functional safety requirements?
Yes - it includes hardware safety mechanisms required for ASIL-B: Timing Protection Unit (TPU), Memory Protection Unit (MPU), ECC on flash and RAM, dual watchdog timers (hardware and software), CRC generation engine, and lockstep-capable peripherals. These features are documented in Infineon's safety manual and certified for use in automotive safety-related systems.
How many CAN channels does MB91F523BSCPMC1-GSE2 integrate, and what are their buffer configurations?
It integrates three independent CAN 2.0B controllers: Channel 0 provides 128 message buffers (transmit/receive), while Channels 1 and 2 each provide 64 message buffers. All channels support bit rates up to 1 Mbps and include dedicated message object RAM, acceptance filtering, and automatic retransmission on error.
What debug and programming interfaces are supported on MB91F523BSCPMC1-GSE2?
The device supports full on-chip debugging (OCD) via standard JTAG (TRST, TDI, TDO, TCK, TMS) and includes SWD-compatible signaling. It enables non-intrusive real-time trace, flash programming, breakpoint setting, and register inspection without halting CPU execution - critical for validating timing-critical automotive firmware.
MB91F523BSCPMC1-GSE2 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:
- 448KB (448K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 64K x 8
- RAM Size:
- 56K 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:
MB91F523BSCPMC1-GSE2 FAQ
1.How can I place an order for MB91F523BSCPMC1-GSE2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MB91F523BSCPMC1-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 MB91F523BSCPMC1-GSE2 reliable?
The price and inventory of MB91F523BSCPMC1-GSE2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MB91F523BSCPMC1-GSE2 is usually 5 days.
3.What payment methods are accepted for MB91F523BSCPMC1-GSE2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MB91F523BSCPMC1-GSE2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MB91F523BSCPMC1-GSE2?
MB91F523BSCPMC1-GSE2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MB91F523BSCPMC1-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 MB91F523BSCPMC1-GSE2?
For technical support, including MB91F523BSCPMC1-GSE2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MB91F523BSCPMC1-GSE2 requirements.
6.How does Aetrix verify that MB91F523BSCPMC1-GSE2 is sourced from the original manufacturer or authorized distributors?
All MB91F523BSCPMC1-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 MB91F523BSCPMC1-GSE2 meets industry standards.
7.What is the process for return or replacement of MB91F523BSCPMC1-GSE2?
All MB91F523BSCPMC1-GSE2 units undergo pre-shipment inspection (PSI). If there is an issue with MB91F523BSCPMC1-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 MB91F523BSCPMC1-GSE2 part is unused and in its original packaging.
Return procedure for MB91F523BSCPMC1-GSE2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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