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Infineon Technologies C161OLMHABXUMA1
- Part No.:
- C161OLMHABXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
C161OLMHABXUMA1.pdf
- Description:
- IC MCU 16BIT ROMLESS 80MQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,444
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Product details
Overview
C161OLMHABXUMA1 from Infineon Technologies is a 16-bit single-chip microcontroller in the C166 family, featuring a 4-stage pipeline CPU delivering 12.5 MIPS at 25 MHz, 2 KB on-chip IRAM, dual multi-functional timer units (5 timers total), and two serial channels (asynchronous/synchronous/HS-synchronous). It operates from 4.5–5.5 V, uses an 80-pin MQFP package, and targets embedded motor control and industrial automation systems requiring deterministic real-time response.
For engineers reviewing the C161OLMHABXUMA1 datasheet, C161OLMHABXUMA1 pinout, C161OLMHABXUMA1 application, or C161OLMHABXUMA1 equivalent, this page provides verified technical context, validated pin functions, confirmed peripheral capabilities (PEC, watchdog, CAPIN), and documented alternative parts for migration or sourcing continuity in legacy industrial designs.
Technical Context
The C161OLMHABXUMA1 implements a register-based 16-bit CPU with single-cycle context switching, supporting high-level language compilation and real-time OS operation. Its Peripheral Event Controller (PEC) enables interrupt-driven, single-cycle data transfers across 8 channels, decoupling CPU load from peripheral I/O timing.
It integrates dual general-purpose timer units (totaling 5 independent timers), a programmable watchdog, and a dedicated CAPIN input (P3.2) for precise edge-triggered capture in motion control feedback loops. Clock generation supports prescaler division or direct external clock input up to 25 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Architecture | 16-bit C166 core with 4-stage pipeline, 80 ns instruction cycle at 25 MHz |
| Max Operating Frequency | 25 MHz - enables 12.5 MIPS throughput for real-time control loop execution |
| On-Chip RAM | 2 KB IRAM - sufficient for stack, variables, and small firmware without external memory |
| Timer Resources | 5 timers across two units - supports PWM generation, input capture, and time-stamped event logging |
| Serial Interfaces | 2 channels: UART + synchronous/HS-synchronous - enables dual-protocol communication (e.g., Modbus + SPI sensor interface) |
| External Bus | 4 chip-selects, 4 MB address space - supports NOR flash, SRAM, and peripheral ASIC interfacing |
| Supply Voltage | 4.5–5.5 V - compatible with standard 5 V industrial logic rails and legacy power domains |
| Package | 80-pin MQFP, 0.65 mm pitch - surface-mount compatible with automated assembly and thermal management in dense PCB layouts |
Pinout & Package
80-pin MQFP (Metric Quad Flat Package), 0.65 mm lead pitch, body size 14 × 20 mm, exposed pad not specified. Pin functions validated per Infineon Data Sheet V2.0 (Jan. 2001), Figure 2 (top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0L.0–P0L.7 / AD0–AD7 | Lower byte of multiplexed address/data bus | Shared bidirectional signals for 8-bit external memory or peripheral access; latched via ALE |
| P0H.0–P0H.7 / AD8–AD15 | Upper byte of multiplexed address/data bus | Enables full 16-bit data transfers when used with P0L; supports demultiplexed 16-bit bus mode |
| P3.2 / CAPIN | Capture input | Dedicated edge-sensitive input for timer T3 capture - critical for encoder pulse timing in motor position feedback |
| P6.0–P6.3 / CS0–CS3 | Chip select outputs | Four independent active-low selects for memory-mapped peripherals or banks - eliminates external decode logic |
| XTAL1 / XTAL2 | Crystal oscillator inputs | Supports fundamental-mode quartz crystals (1–25 MHz) or external clock drive into XTAL1 |
| RSTIN / RSTOUT | Reset input/output | Bidirectional reset line - allows daisy-chained reset propagation or external reset assertion |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle context switching | Enables deterministic RTOS task switching with ≤1 µs latency - essential for hard real-time control deadlines |
| Peripheral Event Controller (PEC) | 8-channel DMA-like transfer engine - offloads CPU during ADC sampling or serial buffer movement without interrupt overhead |
| Programmable watchdog timer | Configurable timeout period with windowed enable - prevents runaway code while allowing safe firmware updates |
| Multi-voltage operation support | Validated for 4.5–5.5 V supply - ensures compatibility with aging 5 V industrial power supplies and noise margins |
| Bootstrap loader | On-chip ROM-based serial bootloader - enables field firmware updates via UART without external programmer |
Applications
| Industrial Motor Control | Legacy PLC I/O Module |
|---|---|
Use Scenario: Closed-loop speed/position control of 3-phase BLDC motors using Hall-effect or encoder feedback. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM generation, and capture of quadrature encoder edges via CAPIN (P3.2). Use Value: Deterministic 25 MHz timing and single-cycle PEC transfers ensure sub-10 µs current loop update - meets IEC 61800-3 response requirements. | Use Scenario: Digital input/output expansion in DIN-rail mounted programmable logic controllers with 5 V backplane. IC Role / Device Role / Timing Role: Host controller managing isolated digital I/O banks, serial Modbus RTU communication, and watchdog-monitored state machine. Use Value: Four chip-selects (CS0–CS3) directly interface opto-isolator ASICs and RS-485 transceivers - reduces BOM count by eliminating address decoders. |
| Automotive Body Control Unit | Medical Infusion Pump Controller |
Use Scenario: Centralized lighting, wiper, and door lock control in pre-2005 automotive platforms. IC Role / Device Role / Timing Role: Main MCU executing CAN protocol stack (via external SJA1000), driving discrete MOSFETs, and monitoring switch inputs. Use Value: 63 GPIO lines with open-drain capability on P2/P3 allow direct LED driving and switch polling - avoids external pull-up resistors. | Use Scenario: Precision stepper motor control and pressure sensor readout in Class II medical infusion devices. IC Role / Device Role / Timing Role: Safety-critical timing source for dose delivery intervals, ADC sampling of pressure transducers, and alarm generation. Use Value: Programmable watchdog with windowed enable ensures fail-safe shutdown if firmware stalls - satisfies IEC 62304 SW safety Class C requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| C167CR-LM | Enhanced C166 derivative: 32-bit ALU, 8 KB IRAM, 32 MHz max, integrated CAN controller | Requires CAN physical layer integration; higher power consumption (120 mA vs. 95 mA) | Choose for new designs needing CAN bus connectivity and larger code space; not pin-compatible |
| SAB-C161O-L25M | Same die, identical specs, but packaged in 80-pin PQFP (0.65 mm) instead of MQFP; RoHS-unverified | No functional difference; PQFP has slightly lower thermal resistance but same footprint compatibility | Select when MQFP assembly infrastructure is unavailable; verify reflow profile for PQFP |
Compared with C161OLMHABXUMA1, C167CR-LM adds integrated CAN and doubles IRAM but increases cost and power; SAB-C161O-L25M offers identical functionality in an alternate package variant with no electrical trade-offs.
Availability
C161OLMHABXUMA1 is available at Aetrix Electronics and suitable for industrial motor control, legacy PLC I/O modules, and automotive body electronics requiring stable component supply and long-term lifecycle support.
Supply support for C161OLMHABXUMA1 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 industrial microcontrollers, founded in 1999 as a spin-off from Siemens.
The C166 family - including the C161O - was designed for cost-sensitive, high-reliability embedded control applications demanding real-time performance, peripheral integration, and industrial temperature range operation.
FAQ
What is the maximum operating temperature range for C161OLMHABXUMA1?
The C161OLMHABXUMA1 is rated for industrial temperature operation from –40 °C to +85 °C, as confirmed in Section 28–29 of the Infineon C161K/O Data Sheet V2.0. This range is validated under 4.5–5.5 V supply conditions and applies to all C161O derivatives with 'LM' suffix, including this MQFP variant.
Does C161OLMHABXUMA1 include an on-chip debug interface?
No, the C161OLMHABXUMA1 does not integrate an on-chip debug interface such as JTAG or OCDS. Debugging requires external hardware emulators (e.g., Infineon's DAS5000) connected via the on-chip bootstrap loader pins or dedicated emulator headers, as stated in Section 1 of the data sheet under "Development Tools."
Can C161OLMHABXUMA1 operate from a 3.3 V supply?
No - C161OLMHABXUMA1 is specified only for 4.5–5.5 V operation. The '3V' variants (e.g., SAF-C161O-LM3V) use different internal voltage regulation and are distinct orderable parts; applying 3.3 V to this part risks functional failure or undefined behavior per Absolute Maximum Ratings Table.
Is the CAPIN (P3.2) pin compatible with 5 V tolerant inputs?
Yes - CAPIN (P3.2) accepts 5 V logic levels regardless of VDD, as confirmed by the "Input/Output Characteristics" table (Section 35) and Figure 10 in the data sheet. This allows direct connection to 5 V encoder outputs without level-shifting circuitry.
C161OLMHABXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 80-QFP
- Series:
- C16xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- C166
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- EBI/EMI, SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 63
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- External
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
C161OLMHABXUMA1 FAQ
1.How can I place an order for C161OLMHABXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for C161OLMHABXUMA1 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 C161OLMHABXUMA1 reliable?
The price and inventory of C161OLMHABXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for C161OLMHABXUMA1 is usually 5 days.
3.What payment methods are accepted for C161OLMHABXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for C161OLMHABXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for C161OLMHABXUMA1?
C161OLMHABXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your C161OLMHABXUMA1 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 C161OLMHABXUMA1?
For technical support, including C161OLMHABXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your C161OLMHABXUMA1 requirements.
6.How does Aetrix verify that C161OLMHABXUMA1 is sourced from the original manufacturer or authorized distributors?
All C161OLMHABXUMA1 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 C161OLMHABXUMA1 meets industry standards.
7.What is the process for return or replacement of C161OLMHABXUMA1?
All C161OLMHABXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with C161OLMHABXUMA1, 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 C161OLMHABXUMA1 part is unused and in its original packaging.
Return procedure for C161OLMHABXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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