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Infineon Technologies C161OLMHAFXUMA1
- Part No.:
- C161OLMHAFXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
C161OLMHAFXUMA1.pdf
- Description:
- IC MCU 16BIT ROMLESS 80MQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,567
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Product details
Overview
C161OLMHAFXUMA1 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), two serial channels (asynchronous/synchronous/HS-synchronous), and 63 general-purpose I/O lines. It operates from 4.5–5.5 V and targets cost-sensitive industrial control and motor drive applications.
For engineers reviewing the C161OLMHAFXUMA1 datasheet, C161OLMHAFXUMA1 pinout, C161OLMHAFXUMA1 application, or C161OLMHAFXUMA1 equivalent, key selection considerations include its 80-pin MQFP package, 25 MHz max clock, 2 KB IRAM, 4 chip-select outputs, and SAF-C161O-L25M derivative identification with integrated CAPIN input and watchdog timer support.
Technical Context
The C161OLMHAFXUMA1 implements a register-based 16-bit CPU with single-cycle context switching, 16 MByte linear address space, and hardware-supported Boolean bit manipulation. Its peripheral event controller (PEC) enables interrupt-driven, single-cycle data transfers across 8 channels.
It supports multiple clock generation modes-including external crystal (XTAL1/XTAL2), prescaled internal oscillator, or direct clock input-and features programmable bus timing for multiplexed/demultiplexed 8-/16-bit external buses with four chip-select signals and configurable wait-state insertion.
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 Clock Frequency | 25 MHz - enables 12.5 MIPS throughput for real-time control loops |
| On-Chip RAM | 2 KB IRAM - sufficient for stack, variables, and small firmware buffers without external SRAM |
| External Bus Interface | 4 programmable chip-selects, 8-/16-bit data bus, demultiplexed/multiplexed mode - supports diverse memory and peripheral mapping |
| Interrupt System | 16 priority levels, 20 sources, 40 ns sample rate - meets hard real-time response requirements in motor control |
| Power Supply | 4.5–5.5 V - compatible with standard 5 V industrial logic rails and legacy system designs |
| Operating Temperature | −40°C to +85°C - qualified for industrial ambient environments per datasheet revision V2.0 |
Pinout & Package
Package: 80-pin MQFP (0.65 mm pitch), thermally enhanced for industrial convection cooling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XTAL1 / XTAL2 | Crystal oscillator input/output | Supports 1–25 MHz fundamental-mode quartz crystals for precise clock generation |
| P3.2 / CAPIN | Capture input | Edge-triggered input for high-resolution time-stamping of external events (e.g., encoder zero-crossing) |
| P0L.0–P0L.7 / AD0–AD7 | Lower byte of multiplexed address/data bus | Shared low-order address and data lines for compact external memory interface |
| P6.0–P6.3 / CS0–CS3 | Chip select outputs | Four independent active-low enables for memory-mapped peripherals or banks |
| RSTIN / RSTOUT | Reset input/output | Bidirectional reset signaling supporting daisy-chained reset propagation and monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Peripheral Event Controller (PEC) | 8-channel, interrupt-driven DMA-like transfer with single-cycle latency - offloads CPU during sensor data acquisition |
| Timer Units | Two independent units totaling 5 timers (including T2EUD, T3EUD, T4EUD) - supports PWM generation, input capture, and quadrature decoding |
| Serial Interfaces | Two full-duplex channels: one UART/USART + one high-speed synchronous (HS-SYNC) - enables simultaneous host comms and fieldbus slave operation |
| Bootstrap Loader | On-chip ROM-based loader activated via P3.8/MRST - enables in-system programming without external programmer |
| Low-Power Modes | Idle and Power Down modes with wake-up via interrupt or external event - extends runtime in battery-backed systems |
Applications
| Industrial Motor Control | Programmable Logic Controllers (PLC) |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors using hall-effect feedback and PWM output. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, capture of encoder edges via CAPIN, and generation of synchronized 3-phase PWM via timer units. Use Value: 40 ns interrupt sampling and single-cycle PEC transfers ensure sub-microsecond jitter in commutation timing. | Use Scenario: Modular I/O processing unit handling discrete input scanning and relay output sequencing. IC Role / Device Role / Timing Role: Central controller managing scan cycle timing, digital I/O state buffering, and serial Modbus RTU communication. Use Value: Dual serial channels allow concurrent HMI interface (UART) and fieldbus master (HS-SYNC) without CPU overhead. |
| Embedded Power Supply Monitoring | Factory Automation Gateways |
Use Scenario: Monitoring AC line voltage, current, and temperature in switch-mode power supplies. IC Role / Device Role / Timing Role: Analog front-end interface via external ADC, time-stamped fault detection using CAPIN, and watchdog supervision. Use Value: Bidirectional reset and programmable watchdog prevent lockup during brown-out conditions common in unregulated AC environments. | Use Scenario: Protocol translation between legacy RS-485 field devices and Ethernet-based SCADA systems. IC Role / Device Role / Timing Role: Bridge processor executing protocol stacks, managing dual serial interfaces, and buffering data in 2 KB IRAM. Use Value: 4 chip-selects enable direct connection to UART transceivers, Ethernet MAC SPI interface, and configuration EEPROM 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-C161O-L25M | Same die, identical electrical specs, but packaged in ceramic PGA instead of MQFP | Limited to high-reliability mil/aero use due to PGA thermal/mechanical robustness | Select only when MQFP reflow compatibility or board space constraints do not apply |
| C167CR-LM | Enhanced C166 derivative with 32 KB on-chip flash, higher 66 MHz clock, and CAN 2.0B controller | Requires CAN physical layer support and larger code footprint; not drop-in compatible | Choose when upgrading from C161O for CAN-based distributed control without changing PCB layout |
Compared with SAB-C161O-L25M and C167CR-LM, the C161OLMHAFXUMA1 offers optimal cost-performance balance for non-CAN, fixed-function industrial controllers where MQFP assembly and 2 KB IRAM are sufficient - avoiding overdesign while maintaining full C166 software compatibility.
Availability
C161OLMHAFXUMA1 is available at Aetrix Electronics and suitable for industrial motor control, programmable logic controllers (PLC), and embedded power supply monitoring requiring stable component supply and long-term industrial lifecycle support.
Supply support for C161OLMHAFXUMA1 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 R&D and manufacturing infrastructure.
The C166 family - including the C161O derivative - was designed for deterministic real-time control in cost-constrained industrial and motor drive systems, emphasizing peripheral integration, interrupt latency, and code density.
FAQ
What is the function of the CAPIN pin (P3.2) on the C161OLMHAFXUMA1?
The CAPIN pin (P3.2) is a dedicated edge-triggered input for the input capture function of Timer 2. It latches the current timer value on rising or falling edges, enabling precise measurement of pulse width, period, or time between external events such as encoder index pulses or fault signals. This capability is essential for high-accuracy motion control timing.
Does the C161OLMHAFXUMA1 support in-system programming (ISP)?
Yes - the device includes an on-chip bootstrap loader activated by asserting MRST (P3.8) during power-up. This ROM-resident loader supports serial programming via UART channel 0 using standard ASCII-based command protocols, eliminating the need for external EPROM programmers in field updates or initial firmware loading.
How many chip-select signals does the C161OLMHAFXUMA1 provide, and what is their purpose?
The C161OLMHAFXUMA1 provides four active-low chip-select outputs (CS0–CS3) on Port 6 pins. These signals decode external memory or peripheral address ranges, allowing independent access to up to four distinct 64 KB regions in the 4 MB external address space. Each CS can be individually configured for wait-state insertion and bus width (8/16-bit).
Is the C161OLMHAFXUMA1 pin-compatible with other C161O variants like the SAF-C161O-LM?
Yes - all C161O derivatives in the 80-pin MQFP package, including SAF-C161O-LM and SAF-C161O-L25M, share identical pinouts and signal assignments. The C161OLMHAFXUMA1 corresponds to the SAF-C161O-L25M variant (25 MHz, 5 V, with CAPIN and watchdog), ensuring full hardware compatibility across this package family.
C161OLMHAFXUMA1 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
C161OLMHAFXUMA1 FAQ
1.How can I place an order for C161OLMHAFXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for C161OLMHAFXUMA1 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 C161OLMHAFXUMA1 reliable?
The price and inventory of C161OLMHAFXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for C161OLMHAFXUMA1 is usually 5 days.
3.What payment methods are accepted for C161OLMHAFXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for C161OLMHAFXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for C161OLMHAFXUMA1?
C161OLMHAFXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your C161OLMHAFXUMA1 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 C161OLMHAFXUMA1?
For technical support, including C161OLMHAFXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your C161OLMHAFXUMA1 requirements.
6.How does Aetrix verify that C161OLMHAFXUMA1 is sourced from the original manufacturer or authorized distributors?
All C161OLMHAFXUMA1 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 C161OLMHAFXUMA1 meets industry standards.
7.What is the process for return or replacement of C161OLMHAFXUMA1?
All C161OLMHAFXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with C161OLMHAFXUMA1, 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 C161OLMHAFXUMA1 part is unused and in its original packaging.
Return procedure for C161OLMHAFXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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