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Infineon Technologies C161OLM3VHABXUMA1
- Part No.:
- C161OLM3VHABXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
C161OLM3VHABXUMA1.pdf
- Description:
- IC MCU 16BIT ROMLESS 80MQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,966
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Product details
Overview
C161OLM3VHABXUMA1 from Infineon Technologies is a 16-bit single-chip microcontroller in the C166 family, designed for cost-sensitive industrial control and embedded systems. It operates at up to 20 MHz with 3.0–3.6 V supply, integrates 2 KB on-chip IRAM, supports 80-pin MQFP packaging, and features dual serial channels, two multi-functional timer units (5 timers total), and a 16-priority-level interrupt system with 20 sources.
For engineers reviewing the C161OLM3VHABXUMA1 datasheet, C161OLM3VHABXUMA1 pinout, C161OLM3VHABXUMA1 application, or C161OLM3VHABXUMA1 equivalent, key selection criteria include its 3 V operation, 2 KB IRAM, 4 chip-select outputs, 7 external interrupt inputs, and SAF-C161O-LM3V derivative compatibility for low-voltage industrial firmware deployment.
Technical Context
The C161OLM3VHABXUMA1 implements a 4-stage pipelined 16-bit CPU delivering 12.5 MIPS at 20 MHz, with single-cycle context switching and register-based architecture supporting HLL and real-time OS execution. Its peripheral event controller (PEC) enables interrupt-driven, single-cycle data transfers across 8 channels.
It integrates two synchronous/asynchronous serial interfaces, two general-purpose timer units (totaling 5 timers), and supports both multiplexed and demultiplexed external bus configurations with programmable chip-select timing. The device includes a programmable watchdog timer and supports idle/power-down modes for energy-constrained applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C166-family 16-bit pipelined CPU with 4-stage pipeline and 12.5 MIPS @ 20 MHz |
| Supply Voltage | 3.0–3.6 V - enables direct integration into 3.3 V system rails without level-shifting |
| On-Chip RAM | 2 KB IRAM - sufficient for real-time task stacks and small data buffers in standalone control |
| External Bus | Up to 4 MB address space with 4 programmable chip-selects and configurable bus width (8/16-bit) |
| Interrupt System | 16-priority-level, 20-source interrupt controller with 40 ns sample rate - supports deterministic response in motor control |
| Timers | Two timer units totaling 5 independent 16-bit timers - supports PWM generation, input capture, and time-stamped event logging |
| Serial Interfaces | Two full-duplex serial channels: one UART + SPI, one high-speed synchronous - enables dual-protocol communication (e.g., Modbus + sensor sync) |
Pinout & Package
Package: 80-pin MQFP (0.65 mm pitch), thermally enhanced for industrial ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0L.0–P0L.7 / AD0–AD7 | Lower byte of multiplexed address/data bus | Shared I/O for external memory access; requires external latch control via ALE |
| P0H.0–P0H.7 / AD8–AD15 | Upper byte of multiplexed address/data bus | Enables 16-bit external data transfers when used with P0L pins |
| P1L.0–P1L.7 / A0–A7 | Lower address bus outputs | Dedicated address lines for non-multiplexed bus mode or extended addressing |
| P1H.0–P1H.7 / A8–A15 | Upper address bus outputs | Supports full 16-bit address decoding without bus contention |
| P2.9–P2.15 / EX1IN–EX7IN | External interrupt inputs | 7 dedicated edge-triggered interrupt pins - enables fast reaction to encoder or safety signals |
| P3.10 / TxD0, P3.11 / RxD0 | UART0 transmit/receive | Asynchronous serial interface compliant with RS-232/RS-485 level-shifter requirements |
| P6.0–P6.3 / CS0–CS3 | Chip-select outputs | Four independent memory/peripheral select signals - simplifies multi-device external memory mapping |
| RSTIN / RSTOUT | Reset input/output | Bidirectional reset line supporting system-wide reset coordination and watchdog recovery |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle context switching | Enables deterministic RTOS task scheduling with sub-100 ns latency between ISR entry and handler execution |
| Peripheral Event Controller (PEC) | Offloads CPU from data movement: 8-channel DMA-like transfers triggered by timer, serial, or external events |
| 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 need for separate 5 V rail in battery-backed or energy-harvesting systems |
| Bootstrap loader | Enables field firmware updates via UART without external programming hardware |
Applications
| Industrial Motor Control | Building Automation Controller |
|---|---|
Use Scenario: Closed-loop speed and position control of 3-phase BLDC motors using Hall-effect feedback. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM generation, and ADC sampling synchronization. Use Value: 20 MHz CPU clock and 40 ns interrupt sampling ensure <5 µs current-loop response time with minimal jitter. | Use Scenario: Central HVAC controller managing zone dampers, temperature sensors, and communication with BACnet MS/TP network. IC Role / Device Role / Timing Role: Dual-serial interface handles RS-485 BACnet and local UART debug; 2 KB IRAM stores protocol stack state. Use Value: Four chip-selects allow direct connection to EEPROM, RTC, and analog front-end without glue logic. |
| Energy Metering Interface | Factory Floor PLC I/O Module |
Use Scenario: Isolated metering head interfacing with metrology ICs and optical port for utility data upload. IC Role / Device Role / Timing Role: Synchronous serial interface clocks metrology IC; UART uploads data via infrared transceiver. Use Value: 3.3 V operation matches isolated power domain; watchdog ensures reliable recovery after brown-out events. | Use Scenario: Distributed digital I/O module with 16-channel opto-isolated inputs and relay drivers. IC Role / Device Role / Timing Role: GPIO expansion via P0/P1/P2 ports; timer units generate precise pulse-width modulated LED indicators. Use Value: 63 available I/O lines support mixed-signal routing; 7 external interrupt inputs handle emergency stop and fault signals. |
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-C161O-LM3V | Same core, identical pinout, same 3.0–3.6 V supply and 2 KB IRAM; differs only in mask ROM content and ordering code suffix | No functional difference; intended for factory-programmed firmware delivery | Select when requiring pre-programmed mask-ROM firmware instead of flash or external bootloadable code |
| C167CR-LM | Enhanced C166 derivative with 32-bit ALU, 8 KB IRAM, and CAN interface; 100-pin PQFP package | Supports CAN-based distributed control networks; higher memory and compute headroom for complex motion profiles | Choose when CAN connectivity or >2 KB on-chip RAM is required; not pin-compatible |
Compared with SAB-C161O-LM3V, C161OLM3VHABXUMA1 offers identical electrical and mechanical behavior but with different ROM programming and traceability marking; versus C167CR-LM, it trades CAN and memory for lower cost and smaller footprint in fixed-function control roles.
Availability
C161OLM3VHABXUMA1 is available at Aetrix Electronics and suitable for industrial motor control, building automation controllers, energy metering interfaces, and factory floor PLC I/O modules requiring stable component supply over extended production lifecycles.
Supply support for C161OLM3VHABXUMA1 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, with global manufacturing and R&D centers.
The C166 family-including the C161O variant-was engineered for deterministic real-time control in cost-sensitive industrial equipment, emphasizing interrupt latency, peripheral integration, and low-power 3 V operation.
FAQ
What is the maximum operating frequency of the C161OLM3VHABXUMA1?
The C161OLM3VHABXUMA1 operates at a maximum CPU clock frequency of 20 MHz, delivering 12.5 million instructions per second. This frequency is validated under 3.0–3.6 V supply conditions and ambient temperatures ranging from –40 °C to +85 °C, as specified in the Infineon C161K/O Data Sheet V2.0 (January 2001).
Does the C161OLM3VHABXUMA1 include on-chip flash memory?
No, the C161OLM3VHABXUMA1 does not contain on-chip flash memory. It features 2 KB of on-chip SRAM (IRAM) and relies on external program memory (e.g., EPROM or Flash) accessed via its 4 MB external bus interface. Firmware loading is supported through the on-chip bootstrap loader via UART.
Is the C161OLM3VHABXUMA1 pin-compatible with the C161K series?
No, the C161OLM3VHABXUMA1 is not pin-compatible with C161K variants. While both use the 80-pin MQFP package, the C161O includes four chip-select outputs (CS0–CS3) and seven external interrupt inputs (EX1IN–EX7IN), whereas the C161K provides only two chip-selects and four external interrupts - resulting in distinct pin allocations and signal assignments.
What development tools are officially supported for this microcontroller?
Infineon officially supports C-compilers (e.g., Tasking C166 Compiler), macro-assembler packages, in-circuit emulators (e.g., Infineon DAS500), evaluation boards (e.g., C161O Evaluation Kit), HLL debuggers, simulators, and programming boards. These tools are documented in the "C166 Family Development Tools" reference guide (Infineon Doc ID 01_01).
C161OLM3VHABXUMA1 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
C161OLM3VHABXUMA1 FAQ
1.How can I place an order for C161OLM3VHABXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for C161OLM3VHABXUMA1 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 C161OLM3VHABXUMA1 reliable?
The price and inventory of C161OLM3VHABXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for C161OLM3VHABXUMA1 is usually 5 days.
3.What payment methods are accepted for C161OLM3VHABXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for C161OLM3VHABXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for C161OLM3VHABXUMA1?
C161OLM3VHABXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your C161OLM3VHABXUMA1 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 C161OLM3VHABXUMA1?
For technical support, including C161OLM3VHABXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your C161OLM3VHABXUMA1 requirements.
6.How does Aetrix verify that C161OLM3VHABXUMA1 is sourced from the original manufacturer or authorized distributors?
All C161OLM3VHABXUMA1 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 C161OLM3VHABXUMA1 meets industry standards.
7.What is the process for return or replacement of C161OLM3VHABXUMA1?
All C161OLM3VHABXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with C161OLM3VHABXUMA1, 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 C161OLM3VHABXUMA1 part is unused and in its original packaging.
Return procedure for C161OLM3VHABXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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