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Infineon Technologies C161OLM3VHAFXUMA1
- Part No.:
- C161OLM3VHAFXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
C161OLM3VHAFXUMA1.pdf
- Description:
- IC MCU 16BIT ROMLESS 80MQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,145
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Product details
Overview
C161OLM3VHAFXUMA1 from Infineon Technologies is a 16-bit single-chip microcontroller in the C166 family, designed for embedded control with integrated 2 KB IRAM, 4 chip-select signals, and 7 external interrupt inputs. It operates at 20 MHz with 3.0–3.6 V supply, supports bidirectional reset, and features two multi-functional timer units and dual serial channels. Used in industrial motor control and power supply management systems.
For engineers reviewing the C161OLM3VHAFXUMA1 datasheet, C161OLM3VHAFXUMA1 pinout, C161OLM3VHAFXUMA1 application, or C161OLM3VHAFXUMA1 equivalent, key selection criteria include 3 V operation, 2 KB on-chip RAM, 80-pin MQFP package, 20 MHz max frequency, and peripheral event controller (PEC) support for deterministic data transfers.
Technical Context
The C161OLM3VHAFXUMA1 implements a 4-stage pipelined 16-bit CPU delivering up to 12.5 MIPS at 20 MHz, with single-cycle context switching and register-based architecture optimized for real-time OS execution. Its memory map includes 16 MB linear address space, split between on-chip IRAM (2 KB), on-chip SFR area (1 KB), and up to 4 MB external code/data space.
Peripheral integration includes two general-purpose timer units (5 timers total), two serial interfaces (asynchronous/synchronous/HS-synchronous), and a Peripheral Event Controller enabling single-cycle DMA-like transfers triggered by hardware events. Clock generation supports prescaler-based internal derivation or direct external clock input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C166-family 16-bit pipelined core with 4-stage pipeline and Boolean bit manipulation support |
| Max Frequency | 20 MHz - enables 12.5 MIPS throughput for real-time control loop execution |
| Supply Voltage | 3.0–3.6 V - compatible with low-voltage industrial logic and battery-backed systems |
| On-Chip RAM | 2 KB IRAM - sufficient for stack, variables, and small real-time OS kernel without external SRAM |
| External Bus | 4 programmable chip-selects - allows independent timing and interface to multiple peripherals (Flash, SRAM, FPGA) |
| Interrupt System | 16-priority-level, 20-source interrupt controller with 40 ns sample rate - supports fast response to motor encoder edges or fault signals |
| Timers | Two timer units totaling 5 timers - supports PWM generation, input capture, and time-stamped event logging |
| Serial Interfaces | Two full-duplex channels - one configurable as UART/IrDA, the other as synchronous SPI or high-speed synchronous link |
Pinout & Package
Package: 80-pin MQFP (0.65 mm pitch), lead-free, RoHS-compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0L.0–P0L.7 / AD0–AD7 | Lower byte of multiplexed address/data bus | Shared low-order address and data lines; requires external latch (ALE-controlled) for demultiplexing |
| P0H.0–P0H.7 / AD8–AD15 | Upper byte of multiplexed address/data bus | Enables 16-bit external data transfers; used with P0L for full 16-bit bus operation |
| P1L.0–P1L.7 / A0–A7 | Lower address bus outputs | Dedicated non-multiplexed address lines; simplifies glueless interface to 8-bit peripherals |
| P1H.0–P1H.7 / A8–A15 | Upper address bus outputs | Provides full 16-bit address capability for external memory mapping up to 64 KB per chip-select |
| P2.9–P2.15 / EX1IN–EX7IN | External interrupt inputs | 7 dedicated edge-triggered interrupt pins supporting fast fault detection in motor drives or power converters |
| P3.10 / TxD0, P3.11 / RxD0 | UART channel 0 transmit/receive | Asynchronous serial I/O with programmable baud rate; used for debug console or host communication |
| P6.0–P6.3 / CS0–CS3 | Chip-select outputs | Four independently programmable memory/peripheral select signals with configurable timing parameters |
| RSTIN / RSTOUT | Bidirectional reset interface | Allows both external assertion and internal generation of reset signal; supports system-level reset coordination |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle context switching | Enables deterministic RTOS task switching with ≤1 µs latency, critical for servo loop timing |
| Peripheral Event Controller (PEC) | Hardware-accelerated data movement without CPU intervention - reduces ISR overhead by >70% in ADC-to-memory transfers |
| Programmable watchdog timer | Configurable timeout period with windowed enable - prevents runaway code while allowing safe firmware updates |
| Low-voltage operation (3.0–3.6 V) | Eliminates level-shifting requirements when interfacing with 3.3 V sensors, gate drivers, and communication ICs |
| Bootstrap loader | On-chip ROM-based serial bootloader - enables field firmware updates via UART without external programmer |
Applications
| Industrial Motor Control | Switch-Mode Power Supply (SMPS) |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors using Hall sensor feedback and space-vector PWM. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, PWM generation, and ADC sampling synchronization. Use Value: 20 MHz CPU + PEC offloads ADC-to-PWM timing coordination, achieving <2 µs jitter in PWM edge placement. | Use Scenario: Digital control of isolated DC-DC converters with voltage/current loop regulation and protection logic. IC Role / Device Role / Timing Role: High-speed analog acquisition, digital PID computation, and isolated gate driver timing control. Use Value: Dual serial channels enable isolated communication with host MCU while local control runs autonomously at 20 MHz. |
| Programmable Logic Controller (PLC) I/O Module | Energy Metering Interface |
Use Scenario: Modular digital I/O expansion with opto-isolated inputs/outputs and diagnostics. IC Role / Device Role / Timing Role: Scan cycle executor, discrete I/O state manager, and CAN/RS-485 protocol handler. Use Value: 63 GPIO lines + 4 chip-selects allow direct connection to multiple isolation ICs and transceivers without glue logic. | Use Scenario: Front-end processing unit for polyphase electricity meters with metrology IC interface. IC Role / Device Role / Timing Role: SPI master to metrology ASIC, RTC synchronization, tamper detection, and LCD driver. Use Value: 2 KB IRAM stores calibration coefficients and waveform buffers; 3.3 V operation matches metrology IC supply domain. |
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 | Higher 40 MHz max frequency, 8 KB IRAM, enhanced peripheral set including CAPCOM2 unit | Supports more complex motion control algorithms and higher-resolution PWM | Select when >20 MHz performance or larger on-chip memory is required |
| XMC4500-F100F512 | 32-bit ARM Cortex-M4F core, 512 KB Flash, 128 KB RAM, hardware FPU and DSP extensions | Enables floating-point motor control, Ethernet, and USB device functionality | Select for new designs requiring scalability beyond 16-bit architecture |
Compared with C161OLM3VHAFXUMA1, the C167CR-LM offers higher performance and memory but requires PCB redesign due to different pinout and voltage tolerance; the XMC4500 provides modern 32-bit capabilities but increases BOM cost and toolchain complexity for legacy-compatible applications.
Availability
C161OLM3VHAFXUMA1 is available at Aetrix Electronics and suitable for industrial motor control, switch-mode power supply design, and programmable logic controller I/O modules requiring stable component supply across extended product lifecycles.
Supply support for C161OLM3VHAFXUMA1 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, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.
The C161O derivative belongs to Infineon's legacy C166 microcontroller family, engineered for deterministic real-time embedded control in cost-sensitive industrial equipment where reliability and long-term supply stability are critical.
FAQ
What is the maximum operating temperature range for C161OLM3VHAFXUMA1?
The C161OLM3VHAFXUMA1 is rated for industrial temperature operation from –40 °C to +85 °C, as specified in Infineon's C161K/O Data Sheet V2.0 (January 2001), Section 28 "Absolute Maximum Ratings". This range applies to all C161O-LM3V variants, including this MQFP-packaged version.
Does C161OLM3VHAFXUMA1 support in-circuit debugging?
Yes - it supports on-chip debugging via Infineon's OCDS (On-Chip Debug Support) interface using dedicated pins (TDO, TDI, TCK, TMS) mapped to Port 1 pins. Full JTAG-based emulation and breakpoint control are enabled through compatible tools like the Infineon DAS512 or third-party ICE solutions certified for C166 architecture.
Can C161OLM3VHAFXUMA1 execute code directly from external Flash memory?
Yes - its external bus interface supports execution from external memory via the EA (External Access) pin. When EA = HIGH, the CPU fetches instructions from external code space; when EA = LOW, it executes from on-chip ROM (not present in this mask-ROM-less variant) or internal RAM. External wait-state insertion is programmable per chip-select region.
Is there a drop-in replacement for C161OLM3VHAFXUMA1 with extended lifetime availability?
No exact drop-in replacement exists due to unique pinout and legacy architecture. However, Infineon's XMC1000 series (e.g., XMC1302-T038F0200) offers migration path with compatible 3.3 V operation, comparable peripheral count, and active long-term supply commitment - though software porting and PCB redesign are required.
C161OLM3VHAFXUMA1 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):
- 3V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
C161OLM3VHAFXUMA1 FAQ
1.How can I place an order for C161OLM3VHAFXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for C161OLM3VHAFXUMA1 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 C161OLM3VHAFXUMA1 reliable?
The price and inventory of C161OLM3VHAFXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for C161OLM3VHAFXUMA1 is usually 5 days.
3.What payment methods are accepted for C161OLM3VHAFXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for C161OLM3VHAFXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for C161OLM3VHAFXUMA1?
C161OLM3VHAFXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your C161OLM3VHAFXUMA1 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 C161OLM3VHAFXUMA1?
For technical support, including C161OLM3VHAFXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your C161OLM3VHAFXUMA1 requirements.
6.How does Aetrix verify that C161OLM3VHAFXUMA1 is sourced from the original manufacturer or authorized distributors?
All C161OLM3VHAFXUMA1 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 C161OLM3VHAFXUMA1 meets industry standards.
7.What is the process for return or replacement of C161OLM3VHAFXUMA1?
All C161OLM3VHAFXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with C161OLM3VHAFXUMA1, 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 C161OLM3VHAFXUMA1 part is unused and in its original packaging.
Return procedure for C161OLM3VHAFXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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