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Infineon Technologies SAF-C161U-LF V1.3
- Part No.:
- SAF-C161U-LF V1.3
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
SAF-C161U-LF V1.3.pdf
- Description:
- IC MCU 16BIT ROMLESS 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,634
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Product details
Overview
SAF-C161U-LF V1.3 from Infineon Technologies is a 16-bit C166-based microcontroller with integrated USB 1.1 controller, dual USART (asynchronous/synchronous), and high-speed synchronous serial interface (SSC). It features 64 KB on-chip ROM, 2 KB RAM, real-time clock (RTC), two general-purpose timer blocks (GPT1/GPT2), and programmable external bus interface. Designed for wired communication peripherals requiring embedded host or device-side USB connectivity.
For engineers reviewing the SAF-C161U-LF V1.3 datasheet, SAF-C161U-LF V1.3 pinout, SAF-C161U-LF V1.3 application, or SAF-C161U-LF V1.3 equivalent, key selection criteria include USB transceiver integration, dual USART baudrate flexibility (including IrDA support), RTC accuracy with software correction, and external memory expansion capability via XBUS.
Technical Context
The SAF-C161U-LF V1.3 implements the C166 CPU core with instruction pipelining, bit-handling extensions, and protected bit access. Its USB module supports full-speed (12 Mbps) device-mode operation with endpoint configuration registers and dedicated USB interrupt vectoring.
The dual USART supports asynchronous framing (8N1–8N2, 7E1–7E2), synchronous master/slave modes, autobaud detection, and IrDA physical layer encoding. The SSC operates at up to 10 MHz with configurable frame formats and DMA-assisted transfers via EPEC channels 0 and 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C166 16-bit RISC-like architecture with 5-stage pipeline and 25 ns min. instruction cycle at 40 MHz crystal |
| USB Interface | Full-speed USB 1.1 device controller with 8 endpoints, integrated transceiver, no external PHY required |
| Serial Peripherals | Dual USART (UART + SPI/I²S-compatible sync mode) + high-speed SSC (10 MHz max, frame-synced) |
| Memory | 64 KB on-chip ROM (mask-programmed), 2 KB on-chip RAM, external bus supporting up to 16 MB address space |
| Real-Time Clock | 48-bit counter with calendar/time-of-day support, alarm and cyclic interrupts, ±10 ppm accuracy with software correction |
| Timer System | Two independent GPT blocks: GPT1 (T2/T3/T4) and GPT2 (T5/T6); supports PWM, input capture, and timer concatenation |
| Interrupt Architecture | 16 priority-level vectored interrupt system with PEC (Peripheral Event Controller) for hardware-triggered service requests |
Pinout & Package
SAF-C161U-LF V1.3 is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with 76 I/O pins, including dedicated USB D+ and D− lines, dual USART TX/RX/CLK/FS pins, SSC data/clock/frame signals, and multiplexed external bus interface (AD0–AD15, A16–A23, RD, WR, CS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0–P0.7 | Port 0 bidirectional I/O / AD0–AD7 | Multiplexed lower address/data bus for external memory access; default GPIO with pull-up option |
| P1.0–P1.7 | Port 1 bidirectional I/O / USB D− / D+ | USB transceiver differential pair; internally terminated; requires no external resistors or PHY |
| P2.0–P2.7 | Port 2 bidirectional I/O / A8–A15 | Upper address bus segment for external memory mapping; supports wait-state insertion |
| P3.0–P3.7 | Port 3 bidirectional I/O / USART0 TX/RX/CLK/FS | Primary serial interface supporting asynchronous UART, synchronous SPI, and IrDA modulation |
| P4.0–P4.7 | Port 4 bidirectional I/O / USART1 TX/RX/CLK/FS | Secondary serial interface with identical functionality to USART0; enables dual-protocol bridging |
| P6.0–P6.7 | Port 6 bidirectional I/O / SSC data/clock/frame | High-speed synchronous serial interface supporting master/slave, frame-synced data transfer up to 10 MHz |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB Device Stack Hardware | Eliminates need for external transceiver or USB protocol firmware; reduces BOM and PCB area |
| Dual Independent USARTs with Autobaud | Enables simultaneous legacy RS-232 and synchronous peripheral control without CPU overhead |
| Hardware Real-Time Clock with Calendar | Provides time-stamped logging, scheduled wake-up, and alarm-triggered event handling in low-power modes |
| External Bus Controller (EBC) with READY Support | Allows seamless interfacing with slow peripherals (e.g., LCD controllers, EEPROMs) using programmable wait states |
| Peripheral Event Controller (PEC) | Offloads CPU by triggering DMA or interrupt service on hardware events (e.g., timer overflow, USART RX complete) |
Applications
| USB PC Peripheral | Industrial Serial Gateway |
|---|---|
Use Scenario: Standalone USB HID device such as barcode scanner or smart card reader connecting directly to host PC. IC Role / Device Role / Timing Role: USB device controller with embedded firmware; manages enumeration, descriptor responses, and bulk IN/OUT transfers. Use Value: Reduces system cost by integrating USB PHY and protocol logic-no external transceiver or USB stack licensing required. |
Use Scenario: Protocol translator between Modbus RTU field devices and USB-connected SCADA host. IC Role / Device Role / Timing Role: Dual-serial bridge with real-time packet buffering and timestamping via RTC. Use Value: Enables deterministic latency control through PEC-triggered USART DMA and GPT-based timeout monitoring. |
| Embedded Audio Interface | Secure Access Terminal |
Use Scenario: USB audio class (UAC) endpoint for headset or microphone with analog front-end interfacing. IC Role / Device Role / Timing Role: Synchronous serial controller (SSC) driving I²S-compatible codec; USB handles streaming data transport. Use Value: SSC's frame-synced 10 MHz operation ensures precise sample alignment without jitter-induced buffer underruns. |
Use Scenario: Physical access control panel with smart card reader, keypad, and USB log upload capability. IC Role / Device Role / Timing Role: Secure real-time controller managing PIN validation, card authentication, and encrypted USB log export. Use Value: On-chip RTC provides tamper-evident time stamps for audit logs; dual USART isolates secure reader interface from USB channel. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded USB peripheral applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon SAF-C167CR-LM | Higher clock speed (66 MHz), larger ROM (128 KB), no integrated USB transceiver - requires external PHY | Targeted at high-throughput industrial controllers needing extended code space but lacking USB device integration | Select when external USB PHY is acceptable and higher CPU performance outweighs USB integration benefit |
| STMicroelectronics STM32F103C8T6 | ARM Cortex-M3 core, 64 KB Flash, USB 2.0 FS device, no built-in RTC calibration or SSC interface | Modern 32-bit platform with broader ecosystem; lacks dedicated high-speed synchronous serial peripheral | Choose for new designs prioritizing toolchain maturity and community support over legacy C166 compatibility |
Compared with SAF-C161U-LF V1.3, the C167CR-LM trades USB integration for raw performance and memory headroom, while the STM32F103C8T6 offers modern architecture and USB 2.0 but omits the SSC and RTC precision features critical for deterministic serial bridging.
Availability
SAF-C161U-LF V1.3 is available at Aetrix Electronics and suitable for USB peripheral development, industrial serial gateways, and secure access terminals requiring stable component supply and long-term lifecycle assurance.
Supply support for SAF-C161U-LF V1.3 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 embedded controllers, with global R&D and manufacturing infrastructure.
The C166 family-including SAF-C161U-LF V1.3-was engineered for wired communications applications demanding integrated USB, robust serial interfaces, and deterministic real-time control in industrial and PC peripheral environments.
FAQ
Does SAF-C161U-LF V1.3 support USB host functionality?
No. The SAF-C161U-LF V1.3 implements only USB device-mode operation per the USB 1.1 specification. Its USB controller lacks host controller logic, root hub management, or SOF generation capability. It enumerates as a full-speed device (12 Mbps) and supports control, bulk, and interrupt transfer types with up to eight configurable endpoints.
What is the maximum external memory size supported by the SAF-C161U-LF V1.3?
The SAF-C161U-LF V1.3 supports up to 16 MB of external memory space using its 24-bit address bus (A0–A23) and multiplexed AD0–AD15 data bus. External memory access is managed by the External Bus Controller (EBC), which allows programmable wait states, READY signal synchronization, and chip-select timing configuration for SRAM, EPROM, or peripheral ICs.
Can the RTC operate during power-down modes?
Yes. The RTC continues running in all low-power modes (Idle, Stop, and Power-down) when supplied by the VBAT pin. It maintains calendar/time-of-day count, alarm, and cyclic interrupt functionality independently of the main CPU clock. The 48-bit counter retains state across resets and supports software correction for temperature-induced drift.
Is the SSC interface compatible with standard I²S or SPI protocols?
The SSC supports frame-synchronized serial communication with programmable word length (4–16 bits), clock polarity/phase, and master/slave operation-but it is not electrically or logically compliant with I²S or SPI standards. It requires custom driver implementation for interoperability with off-the-shelf codecs or shift-register peripherals, though timing parameters align closely with SPI Mode 0/3.
SAF-C161U-LF V1.3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Series:
- C16xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- C166
- Core Size:
- 16-Bit
- Speed:
- 36MHz
- Connectivity:
- EBI/EMI, SPI, UART/USART, USB
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 56
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 3K 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:
SAF-C161U-LF V1.3 FAQ
1.How can I place an order for SAF-C161U-LF V1.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SAF-C161U-LF V1.3 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-C161U-LF V1.3 reliable?
The price and inventory of SAF-C161U-LF V1.3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAF-C161U-LF V1.3 is usually 5 days.
3.What payment methods are accepted for SAF-C161U-LF V1.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAF-C161U-LF V1.3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAF-C161U-LF V1.3?
SAF-C161U-LF V1.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAF-C161U-LF V1.3 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-C161U-LF V1.3?
For technical support, including SAF-C161U-LF V1.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAF-C161U-LF V1.3 requirements.
6.How does Aetrix verify that SAF-C161U-LF V1.3 is sourced from the original manufacturer or authorized distributors?
All SAF-C161U-LF V1.3 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-C161U-LF V1.3 meets industry standards.
7.What is the process for return or replacement of SAF-C161U-LF V1.3?
All SAF-C161U-LF V1.3 units undergo pre-shipment inspection (PSI). If there is an issue with SAF-C161U-LF V1.3, 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-C161U-LF V1.3 part is unused and in its original packaging.
Return procedure for SAF-C161U-LF V1.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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