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Infineon Technologies SAF-XC866-4FRA BC
- Part No.:
- SAF-XC866-4FRA BC
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 38-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SAF-XC866-4FRA BC.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,877
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Product details
Overview
SAF-XC866-4FRA BC from Infineon Technologies is an 8-bit single-chip microcontroller based on the XC800 core (8051-compatible), featuring 12 KB of program Flash, 4 KB of data Flash, and operation across –40 °C to +85 °C. It integrates a 10-bit 8-channel ADC, three 16-bit timers (T0/T1/T2), CCU6 capture/compare unit for PWM, UART, SSC, and on-chip debug support via 1 KB monitor ROM. It targets automotive body electronics requiring robust non-volatile memory and mixed-signal control.
For engineers reviewing the SAF-XC866-4FRA BC datasheet, SAF-XC866-4FRA BC pinout, SAF-XC866-4FRA BC application, or SAF-XC866-4FRA BC equivalent, key selection criteria include its 12 KB P-Flash + 4 KB D-Flash memory split, 3.3 V or 5.0 V I/O supply with 2.5 V core regulation, CCU6-based PWM timing precision, and automotive-grade temperature qualification (SAF).
Technical Context
The SAF-XC866-4FRA BC implements a two-clock-per-machine-cycle XC800 core derived from the 8051 architecture, enabling zero-wait-state execution from on-chip Flash. Its memory subsystem includes 8 KB Boot ROM, 256 B RAM, 512 B XRAM, and configurable Flash partitioning for code and data storage with hardware bit protection.
Peripherals are clock-gated for power management and include a dedicated 16-bit CCU6 module supporting center-aligned and edge-aligned PWM generation, a full-duplex UART with automatic baud rate detection, and an 8-channel 10-bit ADC with programmable sampling time and conversion trigger sources including timer overflows and external events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | XC800 (8051-compatible), 2 clocks/machine cycle → enables deterministic real-time instruction timing without wait states |
| Program Memory | 12 KB P-Flash → stores firmware with in-system programmability and memory protection |
| Data Memory | 4 KB D-Flash → retains calibration data, configuration parameters, and event logs across power cycles |
| ADC Resolution | 10-bit, 8-channel → supports precise analog sensing of battery voltage, temperature, and sensor signals in automotive ECUs |
| PWM Timing Unit | CCU6 capture/compare unit → generates high-resolution, phase-correct PWM for motor control and LED dimming |
| Operating Temperature | –40 °C to +85 °C (SAF grade) → certified for under-hood and cabin-mounted automotive applications |
| I/O Supply Voltage | 3.3 V or 5.0 V → interfaces directly with legacy 5 V sensors and modern 3.3 V logic without level shifters |
Pinout & Package
SAF-XC866-4FRA BC is housed in a PG-TSSOP-38 package - a 38-pin thin shrink small-outline package with 0.65 mm pitch, optimized for compact automotive PCB layouts and automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDP | Digital I/O power supply | Accepts 3.3 V or 5.0 V; powers all GPIO ports and digital peripherals independently of core supply |
| VDD | Core logic supply | 2.5 V regulated internally; decoupling required externally for stable CPU and memory operation |
| XTAL1/XTAL2 | Crystal oscillator input/output | Supports external quartz crystal (1–20 MHz) or ceramic resonator for system clock generation |
| P0.0–P0.7 | Port 0 bidirectional I/O | 8-bit port with alternate functions including UART RXD/TXD, SSC pins, and ADC inputs |
| P1.0–P1.7 | Port 1 bidirectional I/O | 8-bit port supporting CCU6 channels, timer capture inputs, and external interrupt sources (EXINT0) |
| P2.0–P2.2 | Port 2 partial I/O | 3-bit port with UART CTS/RTS and watchdog reset output capability |
| P3.0–P3.2 | Port 3 partial I/O | 3-bit port providing ADC reference voltage control, reset input, and oscillator enable |
Key Features
| Feature | Design Value |
|---|---|
| On-chip voltage regulator | Generates stable 2.5 V core supply from VDDP → eliminates need for external LDO and reduces BOM count |
| Memory protection strategy | Hardware-enforced write protection for Flash sectors → prevents accidental firmware corruption during field updates |
| Power-down wake-up sources | RXD pin activity or EXINT0 signal → enables ultra-low-power sleep mode with responsive wake-up for LIN or CAN node polling |
| Monitor ROM & RAM | 1 KB ROM + 64 B RAM dedicated to on-chip debug → supports flash programming and real-time variable inspection without external debugger hardware |
| Brownout reset (BOR) | Detects core supply drop below 2.3 V → triggers safe shutdown before register state corruption occurs |
Applications
| Automotive Body Control Module | Smart Lighting Controller |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirrors, and interior lighting in passenger vehicles. IC Role / Device Role / Timing Role: Main MCU executing LIN slave protocol, managing PWM dimming for ambient LEDs, and sampling switch inputs. Use Value: 12 KB P-Flash accommodates LIN stack + application logic; CCU6 delivers synchronized multi-channel PWM with <1% duty cycle error at 20 kHz. | Use Scenario: Adaptive headlamp leveling and dynamic rear lighting with thermal compensation. IC Role / Device Role / Timing Role: Sensor fusion hub interfacing with gyros, thermistors, and current-sense ADCs while driving high-current LED strings. Use Value: 10-bit ADC with programmable sampling ensures accurate thermal feedback; D-Flash stores per-unit calibration coefficients for lifetime LED brightness consistency. |
| Engine Bay Fan Controller | Seat Position Memory Module |
Use Scenario: Closed-loop PWM control of brushless cooling fans based on coolant temperature and vehicle speed. IC Role / Device Role / Timing Role: Real-time motor controller using CCU6 for 3-phase commutation timing and ADC for current sensing. Use Value: Hardware CCU6 offloads timing-critical commutation from CPU; 85 °C operating range ensures reliability near engine heat sources. | Use Scenario: Storing and recalling driver seat position settings via non-volatile memory. IC Role / Device Role / Timing Role: Dedicated memory manager handling EEPROM emulation using D-Flash with wear-leveling firmware. Use Value: 4 KB D-Flash provides >100k write cycles per sector; built-in memory protection prevents inadvertent overwrite during vehicle battery transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAF-XC886-4FRA | Enhanced XC800 core with 24 MHz max CPU frequency, 16 KB P-Flash, integrated CAN controller | Required where CAN bus communication is mandatory (e.g., gateway modules) | Select when CAN physical layer interface and protocol stack integration reduce external component count |
| SAF-XE162FM-48F66L | 16-bit C166-based core, 64 KB Flash, 8 KB RAM, dual ADC, no CCU6 but CAPCOM6 unit | Suitable for higher computational load (e.g., multi-sensor fusion, PID loop acceleration) | Choose when 16-bit math performance and larger memory footprint justify cost and layout complexity |
Compared with SAF-XC866-4FRA BC, SAF-XC886-4FRA adds CAN but increases pin count and cost; SAF-XE162FM-48F66L offers greater processing headroom but lacks the CCU6's deterministic PWM timing-making the XC866 optimal for cost-sensitive, timing-critical 8-bit automotive control tasks.
Availability
SAF-XC866-4FRA BC is available at Aetrix Electronics and suitable for automotive body electronics, smart lighting systems, and engine bay fan controllers requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for SAF-XC866-4FRA BC 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure.
The XC866 belongs to Infineon's XC800 family-designed specifically for cost-optimized, real-time automotive body electronics where deterministic timing, Flash flexibility, and extended temperature resilience are essential.
FAQ
Does SAF-XC866-4FRA BC support in-circuit debugging without external hardware?
Yes. It includes 1 KB of dedicated monitor ROM and 64 bytes of monitor RAM within the 8 KB Boot ROM, enabling flash programming, breakpoint setting, and real-time register inspection via UART using Infineon's DASiM debug adapter-no JTAG probe required.
What is the maximum ADC sampling rate achievable with the 10-bit converter?
The ADC achieves up to 100 kSPS maximum conversion rate when configured for single-shot mode with shortest sampling time (1.5 µs). Conversion time varies with sampling duration and reference voltage stability; typical effective throughput is 75 kSPS under automotive EMI conditions.
Can the 4 KB D-Flash be used for EEPROM emulation, and is wear leveling supported in hardware?
The D-Flash supports EEPROM emulation via firmware-managed sector rotation, but wear leveling is not implemented in hardware. Infineon provides application note AP32161 with validated software routines achieving >100,000 write cycles per logical address using 512-byte D-Flash pages and status tracking in RAM.
Is the CCU6 module capable of generating complementary PWM outputs with programmable dead time?
Yes. The CCU6 supports complementary PWM channel pairs (e.g., CC60/CC61) with hardware-configurable dead-time insertion ranging from 0 to 1023 clock cycles, adjustable in real time via CCU6 register writes-critical for preventing shoot-through in half-bridge motor drivers.
SAF-XC866-4FRA BC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width)
- Series:
- XC8xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- XC800
- Core Size:
- 8-Bit
- Speed:
- 86MHz
- Connectivity:
- SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 19
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 768 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
SAF-XC866-4FRA BC FAQ
1.How can I place an order for SAF-XC866-4FRA BC through Aetrix?
Please submit a Request for Quotation (RFQ) for SAF-XC866-4FRA BC 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 SAF-XC866-4FRA BC reliable?
The price and inventory of SAF-XC866-4FRA BC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAF-XC866-4FRA BC is usually 5 days.
3.What payment methods are accepted for SAF-XC866-4FRA BC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAF-XC866-4FRA BC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAF-XC866-4FRA BC?
SAF-XC866-4FRA BC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAF-XC866-4FRA BC 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 SAF-XC866-4FRA BC?
For technical support, including SAF-XC866-4FRA BC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAF-XC866-4FRA BC requirements.
6.How does Aetrix verify that SAF-XC866-4FRA BC is sourced from the original manufacturer or authorized distributors?
All SAF-XC866-4FRA BC 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 SAF-XC866-4FRA BC meets industry standards.
7.What is the process for return or replacement of SAF-XC866-4FRA BC?
All SAF-XC866-4FRA BC units undergo pre-shipment inspection (PSI). If there is an issue with SAF-XC866-4FRA BC, 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 SAF-XC866-4FRA BC part is unused and in its original packaging.
Return procedure for SAF-XC866-4FRA BC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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