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Infineon Technologies SAF-C161O-L25M HA
- Part No.:
- SAF-C161O-L25M HA
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
SAF-C161O-L25M HA.pdf
- Description:
- IC MCU 16BIT ROMLESS 80MQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,821
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Product details
Overview
SAF-C161O-L25M HA from Infineon Technologies is a 16-bit single-chip microcontroller featuring a 25 MHz CPU clock, 2 KB on-chip IRAM, four programmable chip-select signals, seven external interrupt inputs, and support for 5 V operation. It integrates two multi-functional timer units (5 timers total), two serial channels (asynchronous/synchronous/HS-synchronous), and an 80-pin MQFP package with multiplexed address/data bus capability. It is used in industrial motor control systems requiring deterministic real-time response and external memory expansion.
For engineers reviewing the SAF-C161O-L25M HA datasheet, SAF-C161O-L25M HA pinout, SAF-C161O-L25M HA application, or SAF-C161O-L25M HA equivalent, key selection criteria include its 25 MHz timing granularity (2 ns), 16-priority-level interrupt system with 40 ns sample rate, PEC-driven single-cycle data transfers, and bootstrap loader support for field firmware updates.
Technical Context
The C161O derivative implements a 4-stage pipeline 16-bit CPU delivering up to 12.5 MIPS at 25 MHz, with 80 ns instruction cycle time, 400 ns 16×16 multiply, and 800 ns 32÷16 divide. Its memory architecture supports 16 MBytes linear address space, including 2 KB IRAM and up to 4 MBytes external code/data space with programmable bus characteristics.
Peripheral integration includes dual timer units (5 timers), two serial interfaces (UART + SPI-like high-speed synchronous), 63 general-purpose I/O lines across Ports 0–6, and a Peripheral Event Controller enabling interrupt-driven, single-cycle data transfers without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Clock | 25 MHz - enables 80 ns instruction cycle time for deterministic real-time execution |
| IRAM | 2 KB - sufficient for stack, variables, and small RTOS kernels without external RAM |
| External Address Space | Up to 4 MBytes - supports large program storage or data buffers via configurable chip-selects |
| Interrupt System | 16 priority levels, 20 sources, 40 ns sample rate - meets hard real-time deadlines in motor control |
| Timer Units | Two units, 5 total timers - enables simultaneous PWM generation, input capture, and timebase management |
| Serial Interfaces | Two channels: UART + high-speed synchronous - supports host communication and sensor/actuator synchronization |
| Package | 80-pin MQFP, 0.65 mm pitch - standard surface-mount footprint compatible with industrial PCB assembly |
Pinout & Package
SAF-C161O-L25M HA is housed in an 80-pin MQFP (Metric Quad Flat Package) with 0.65 mm lead pitch, designed for reflow soldering and industrial thermal cycling reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0L.0–P0L.7 / AD0–AD7 | Lower byte address/data multiplex | Shared low-order address and data bus lines; require external latch control via ALE |
| P0H.0–P0H.7 / AD8–AD15 | Upper byte address/data multiplex | Shared high-order address and data bus lines; enable 16-bit external memory interface |
| EA | External Access Enable | Low = execute from external memory; high = execute from internal ROM (if present) |
| ALE | Address Latch Enable | Strobes lower/upper address bytes onto P0 during multiplexed bus cycles |
| RSTIN / RSTOUT | Reset input/output | Asynchronous reset input; open-drain reset output for system-wide reset coordination |
| P3.10 / TxD0, P3.11 / RxD0 | UART channel 0 TX/RX | Full-duplex asynchronous serial interface for debugging or host communication |
| P6.0–P6.3 / CS0–CS3 | Chip-select outputs | Four independent, programmable memory-mapped chip-select signals for peripheral partitioning |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle context switching | Enables fast RTOS task switching with minimal latency overhead in interrupt service routines |
| Peripheral Event Controller (PEC) | Offloads data movement (e.g., ADC→RAM) to hardware, freeing CPU for computation |
| Bootstrap loader | Allows in-system firmware update via UART without external programmer hardware |
| Programmable watchdog timer | Configurable timeout period prevents system lockup in unattended industrial deployments |
| Idle and power-down modes | Reduces current draw during standby while retaining register and RAM state |
Applications
| Industrial Motor Control | Factory Automation PLC |
|---|---|
Use Scenario: Closed-loop servo drive controlling brushless DC motor position and speed using encoder feedback. IC Role / Device Role / Timing Role: Real-time controller executing PID loops, generating 3-phase PWM, and managing serial feedback from position sensors. Use Value: 25 MHz CPU clock and 40 ns interrupt sampling ensure sub-100 µs control loop jitter for stable torque response. | Use Scenario: Modular I/O base unit aggregating digital inputs/outputs and analog sensor data for centralized logic execution. IC Role / Device Role / Timing Role: Central processing node handling scan-cycle logic, communication with HMI over UART, and local diagnostics. Use Value: Four chip-selects allow direct connection to multiple I/O expansion ASICs without glue logic. |
| Power Supply Monitoring System | Test Equipment Controller |
Use Scenario: Rack-mounted AC/DC power supply with digital regulation, fault logging, and remote configuration via RS-232. IC Role / Device Role / Timing Role: System manager coordinating ADC sampling, digital control of DACs, EEPROM logging, and serial command parsing. Use Value: 2 KB IRAM stores calibration tables and event logs; PEC automates ADC-to-RAM transfers during 10 kHz sampling. | Use Scenario: Automated test fixture sequencing relay actuation, reading DMM outputs, and reporting pass/fail over GPIB-equivalent UART. IC Role / Device Role / Timing Role: Deterministic sequencer synchronizing hardware triggers, capturing timed responses, and formatting results. Use Value: Dual serial channels support simultaneous host command reception and instrument data streaming without buffering bottlenecks. |
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 HA | Same core, identical pinout, but with different marking and traceability for automotive-grade sourcing | Qualified per AEC-Q100 Grade 2; suitable for under-hood temperature ranges (−40°C to +105°C) | Select when extended temperature operation and automotive qualification are required |
| SAF-C161O-LM | 20 MHz max clock, same peripherals and package; lower power consumption at reduced frequency | Targeted at cost-sensitive, non-timing-critical applications where 12.5 MIPS suffices | Select when system timing budget allows relaxed CPU performance and lower BOM cost is prioritized |
Compared with SAF-C161O-L25M HA, SAB-C161O-L25M HA adds automotive qualification without altering functionality, while SAF-C161O-LM trades 25% CPU throughput for lower dynamic power-making each choice a deliberate trade-off between performance, environment, and cost.
Availability
SAF-C161O-L25M HA is available at Aetrix Electronics and suitable for industrial motor control, factory automation PLCs, power supply monitoring systems, and test equipment controllers requiring stable component supply and long-term lifecycle support.
Supply support for SAF-C161O-L25M HA 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 microcontrollers, with global R&D and manufacturing infrastructure.
The C161O belongs to the C166 family, designed specifically for cost-sensitive industrial real-time control applications requiring high CPU throughput, flexible memory expansion, and integrated peripherals for deterministic I/O handling.
FAQ
What is the maximum operating temperature range for SAF-C161O-L25M HA?
The SAF-C161O-L25M HA is rated for industrial temperature operation from −40°C to +85°C, as specified in the Infineon C161K/O Data Sheet V2.0 (2001). This range is validated for continuous operation under full load with appropriate PCB thermal design and airflow.
Does SAF-C161O-L25M HA include on-chip flash or ROM memory?
No, the SAF-C161O-L25M HA contains no on-chip non-volatile program memory. It relies on external ROM or flash via its 4 MByte external bus interface. The part includes 2 KB of on-chip SRAM (IRAM) and a bootstrap loader that supports UART-based firmware loading into external memory.
Can SAF-C161O-L25M HA operate from a 3.3 V supply?
No, SAF-C161O-L25M HA is specified only for 4.5 V to 5.5 V operation. For 3 V operation, Infineon offers the SAF-C161O-LM3V variant, which shares the same peripheral set and package but is optimized for 3.0–3.6 V supply and operates at up to 20 MHz.
Is there hardware support for CAN bus communication on this microcontroller?
No, the SAF-C161O-L25M HA does not integrate a CAN controller or transceiver. Its two serial channels support UART and high-speed synchronous protocols only. CAN functionality requires external CAN controller ICs (e.g., Infineon TLE6250) interfaced via GPIO or serial peripheral.
SAF-C161O-L25M HA 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:
- 25MHz
- 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:
SAF-C161O-L25M HA FAQ
1.How can I place an order for SAF-C161O-L25M HA through Aetrix?
Please submit a Request for Quotation (RFQ) for SAF-C161O-L25M HA 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 SAF-C161O-L25M HA reliable?
The price and inventory of SAF-C161O-L25M HA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAF-C161O-L25M HA is usually 5 days.
3.What payment methods are accepted for SAF-C161O-L25M HA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAF-C161O-L25M HA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAF-C161O-L25M HA?
SAF-C161O-L25M HA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAF-C161O-L25M HA 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 SAF-C161O-L25M HA?
For technical support, including SAF-C161O-L25M HA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAF-C161O-L25M HA requirements.
6.How does Aetrix verify that SAF-C161O-L25M HA is sourced from the original manufacturer or authorized distributors?
All SAF-C161O-L25M HA 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 SAF-C161O-L25M HA meets industry standards.
7.What is the process for return or replacement of SAF-C161O-L25M HA?
All SAF-C161O-L25M HA units undergo pre-shipment inspection (PSI). If there is an issue with SAF-C161O-L25M HA, 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 SAF-C161O-L25M HA part is unused and in its original packaging.
Return procedure for SAF-C161O-L25M HA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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