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Infineon Technologies C161PILFCAFXUMA1
- Part No.:
- C161PILFCAFXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
C161PILFCAFXUMA1.pdf
- Description:
- IC MCU 16BIT ROMLESS 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,957
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Product details
Overview
C161PILFCAFXUMA1 from Infineon Technologies is a 16-bit single-chip microcontroller in the C166 family, serving as a cost-optimized control unit for embedded industrial and automotive subsystems. It features an 80 ns instruction cycle at 25 MHz CPU clock, 10-bit ADC with 7.8 µs conversion time, on-chip PLL (1:1.5–5), 1 KB IRAM + 2 KB XRAM, and 100-pin TQFP package.
For engineers reviewing the C161PILFCAFXUMA1 datasheet, C161PILFCAFXUMA1 pinout, C161PILFCAFXUMA1 application, or C161PILFCAFXUMA1 equivalent, key selection criteria include its 16-priority interrupt system with 40 ns sample rate, I²C interface (400 kHz, 10-bit addressing), dual serial channels, and support for multiplexed/demultiplexed 8/16-bit external buses up to 8 MB address space.
Technical Context
The C161PILFCAFXUMA1 implements a 4-stage pipelined 16-bit CPU with register-based architecture, single-cycle context switching, and enhanced Boolean bit manipulation-enabling efficient real-time control in deterministic systems. Its peripheral event controller (PEC) supports 8-channel interrupt-driven single-cycle data transfers independent of CPU intervention.
On-chip clock generation uses a configurable PLL with integer dividers (1.5× to 5×), prescaler, or direct external clock input; the real-time clock and programmable watchdog timer operate independently of main CPU execution, ensuring robust timing supervision in safety-critical loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C166 16-bit architecture with 4-stage pipeline; enables 8 MIPS at 25 MHz for deterministic control loop execution. |
| Instruction Cycle | 80 ns at 25 MHz CPU clock; ensures sub-100 ns response latency for time-critical ISR handling. |
| ADC Resolution & Speed | 10-bit SAR ADC with programmable conversion time down to 7.8 µs; supports fast analog feedback in motor control or sensor monitoring. |
| External Bus | Up to 8 MB address space with five programmable chip-selects; supports mixed 8/16-bit demultiplexed or multiplexed bus configurations for flexible memory/peripheral expansion. |
| I²C Interface | Two-channel I²C (multiplexed), 10-bit addressing, 400 kHz max; enables direct connection to EEPROMs, temperature sensors, and power management ICs without external logic. |
| Interrupt System | 27 sources, 16 priority levels, 40 ns minimum sample rate; allows precise event capture in high-speed encoder or PWM edge detection applications. |
| Package | 100-pin TQFP (14 × 14 mm, 0.5 mm pitch); compatible with standard SMT reflow profiles and industrial PCB layout practices. |
Pinout & Package
Package: 100-pin TQFP (Thin Quad Flat Package), RoHS-compliant, lead-free, body size 14 mm × 14 mm, pitch 0.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P5.0 / AN0 | Analog Input Channel 0 | Dedicated Schmitt-trigger input with internal A/D sampling path; used for precision voltage sensing without external signal conditioning. |
| XTAL1 / XTAL2 | Crystal Oscillator Interface | Drives on-chip oscillator amplifier; supports quartz crystals (1–25 MHz) or external clock source applied to XTAL1 only. |
| P3.0 / SCL0 | I²C Clock Line 0 | Open-drain output with internal pull-up option; synchronizes bidirectional data transfer on I²C bus channel 0. |
| P3.10 / TxD0 | UART Transmit Output | Asynchronous serial output with programmable baud rate; interfaces directly to RS-232 transceivers or optocouplers. |
| EA / ALE / RD / WR/WRL | External Bus Control Signals | Enable external memory access (EA), latch address (ALE), read strobe (RD), and write strobe (WR/WRL); configure timing for SRAM, Flash, or peripherals. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip PLL with selectable multiplication factors | Configurable 1.5× to 5× clock multiplication enables precise system clock derivation from low-frequency crystals, reducing EMI and board-level clock distribution complexity. |
| Peripheral Event Controller (PEC) | 8-channel DMA-like hardware transfers triggered by peripheral events (e.g., ADC completion, timer overflow); eliminates CPU polling overhead in high-throughput data acquisition. |
| Real-time clock with independent oscillator | Runs continuously during idle/power-down modes using dedicated RC or crystal source; maintains timekeeping without CPU wake-up or external RTC IC. |
| Bootstrap loader with UART interface | Enables field firmware updates via serial port without external programming hardware; reduces manufacturing and service logistics cost. |
| Programmable input thresholds & hysteresis | Per-pin configuration of Schmitt-trigger thresholds on Port 2/3/5; improves noise immunity in electrically noisy industrial environments (e.g., motor drives). |
Applications
| Motor Control Subsystem | Industrial Sensor Hub |
|---|---|
|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM generation, and ADC-synchronized current sampling. Use Value: 7.8 µs ADC conversion and 40 ns interrupt sampling enable precise current vector sampling within 1 µs window, critical for torque ripple reduction. |
Use Scenario: Aggregation and preprocessing of analog temperature, pressure, and humidity signals in factory-floor monitoring nodes. IC Role / Device Role / Timing Role: Analog front-end controller with simultaneous multi-channel sampling and I²C-based sensor communication. Use Value: On-chip 10-bit ADC with four dedicated ANx inputs eliminates external multiplexer and signal conditioning, reducing BOM count and calibration effort. |
| Automotive Body Control Module | Power Supply Sequencing Controller |
|
Use Scenario: Centralized control of door locks, window lifts, and lighting in entry-level vehicle platforms. IC Role / Device Role / Timing Role: Main MCU managing CAN-linked diagnostics, GPIO-driven actuators, and watchdog-monitored power states. Use Value: Integrated watchdog timer with oscillator watchdog ensures fail-safe reset during brown-out or clock failure-meeting ISO 16750-2 electrical stress requirements. |
Use Scenario: Sequencing and monitoring of multi-rail DC/DC converters in telecom base station power shelves. IC Role / Device Role / Timing Role: Supervisor and sequencer coordinating voltage ramp-up/down timing, fault logging, and thermal throttling. Use Value: Programmable external bus with five CS outputs allows direct interfacing to multiple PMBus-compatible power controllers without glue logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAB-C167CS-LM | Higher-performance C167 core (100 ns cycle), 8 KB on-chip RAM, no integrated I²C; requires external level-shifting for 5 V I/O. | Targeted at higher-speed motor control where extended RAM and faster timers outweigh I²C convenience. | Select when >8 MIPS throughput and larger on-chip memory are required; verify external I²C transceiver compatibility. |
| SAF-C161PI-LF | Same die, identical functionality; differs only in mask ROM content and ordering code suffix-no electrical or packaging difference. | No functional distinction; used interchangeably where ROM code matches and qualification documentation aligns. | Prefer for new designs requiring full Infineon qualification traceability; legacy C161PI variants may lack updated AC characterization. |
Compared with SAB-C167CS-LM, C161PILFCAFXUMA1 trades raw speed for integrated peripherals and lower system cost; compared with SAF-C161PI-LF, it shares identical silicon but reflects updated production lot controls and final test screening per Infineon's 1999-07 revision.
Availability
C161PILFCAFXUMA1 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and power supply sequencing applications requiring stable component supply across long-lifecycle programs.
Supply support for C161PILFCAFXUMA1 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 electronics, and industrial control ICs, with global R&D and manufacturing infrastructure.
The C166 family-including the C161PI-was designed for cost-sensitive, high-reliability embedded control in automotive and industrial environments, emphasizing real-time determinism, peripheral integration, and long-term manufacturability.
FAQ
What is the maximum operating frequency supported by the C161PILFCAFXUMA1?
The C161PILFCAFXUMA1 supports a maximum CPU clock frequency of 25 MHz, yielding an 80 ns instruction cycle time. The on-chip PLL allows multiplication of lower-frequency crystal inputs (e.g., 5 MHz × 5 = 25 MHz) to meet this specification while maintaining stability and reducing EMI. External clock input is also supported directly at the XTAL1 pin.
Does the C161PILFCAFXUMA1 support in-system programming (ISP)?
No-the C161PILFCAFXUMA1 does not support ISP. It contains mask-programmed ROM; firmware is fixed at fabrication. However, it includes an on-chip bootstrap loader accessible via UART (P3.10/P3.11), enabling field firmware updates only if the initial ROM image includes loader support and proper entry-point configuration.
How many independent I²C buses does the C161PILFCAFXUMA1 provide?
The C161PILFCAFXUMA1 provides one physical I²C interface with two logical channels (SCL0/SDA0 and SCL1/SDA1), multiplexed onto shared pins (P3.0/P3.1 and P6.6/P6.5). Channel selection is controlled via the I²C control register; both channels support 10-bit addressing and 400 kHz operation, but cannot operate simultaneously.
Is the C161PILFCAFXUMA1 qualified for automotive applications?
The C161PILFCAFXUMA1 is not AEC-Q100 qualified. While used historically in automotive body electronics, Infineon's official documentation classifies it for industrial and general-purpose embedded use. For new automotive designs, Infineon recommends the later AUDO family or TC17xx derivatives with formal AEC-Q100 Grade 2/3 qualification and extended temperature range validation.
C161PILFCAFXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Series:
- C16xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- C166
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- EBI/EMI, I2C, SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 76
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 3K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
C161PILFCAFXUMA1 FAQ
1.How can I place an order for C161PILFCAFXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for C161PILFCAFXUMA1 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 C161PILFCAFXUMA1 reliable?
The price and inventory of C161PILFCAFXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for C161PILFCAFXUMA1 is usually 5 days.
3.What payment methods are accepted for C161PILFCAFXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for C161PILFCAFXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for C161PILFCAFXUMA1?
C161PILFCAFXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your C161PILFCAFXUMA1 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 C161PILFCAFXUMA1?
For technical support, including C161PILFCAFXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your C161PILFCAFXUMA1 requirements.
6.How does Aetrix verify that C161PILFCAFXUMA1 is sourced from the original manufacturer or authorized distributors?
All C161PILFCAFXUMA1 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 C161PILFCAFXUMA1 meets industry standards.
7.What is the process for return or replacement of C161PILFCAFXUMA1?
All C161PILFCAFXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with C161PILFCAFXUMA1, 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 C161PILFCAFXUMA1 part is unused and in its original packaging.
Return procedure for C161PILFCAFXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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