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Infineon Technologies SAK-C161CS-LF CA
- Part No.:
- SAK-C161CS-LF CA
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
SAK-C161CS-LF CA.pdf
- Description:
- IC MCU 16BIT ROMLESS 128TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,869
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Product details
Overview
SAK-C161CS-LF from Infineon Technologies is a 16-bit single-chip microcontroller in the C166 family, featuring a 25 MHz CPU, on-chip CAN 2.0B interface (dual CAN channels), 2 KB IRAM, 8 KB XRAM, and 12-channel 10-bit ADC with 7.8 µs conversion time. It targets automotive body control modules requiring real-time communication and deterministic I/O handling.
For engineers reviewing the SAK-C161CS-LF datasheet, SAK-C161CS-LF pinout, SAK-C161CS-LF application, or SAK-C161CS-LF equivalent, key selection criteria include dual-CAN support, 128-pin TQFP package compatibility, 25 MHz maximum clock frequency, and mask-ROM–less boot flexibility via on-chip bootstrap loader.
Technical Context
The SAK-C161CS-LF implements a 4-stage pipelined 16-bit CPU delivering 12.5 MIPS at 25 MHz, with single-cycle context switching and 16 MByte linear address space. Its peripheral set includes two independent CAN controllers (CAN1/CAN2), each compliant with ISO 11898-1 Rev. 2.0B and supporting up to 15 message objects.
Timing-critical functions are supported by two 16-channel capture/compare units, five general-purpose timers, and programmable sample timing for the 10-bit ADC. Clock generation uses an on-chip PLL with selectable multiplication factors (1.5× to 5×) and a dedicated 32 kHz oscillator for RTC operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 16-bit C166 architecture with 4-stage pipeline, enabling 80 ns instruction cycle at 25 MHz |
| Max Clock Frequency | 25 MHz system clock, supported by internal PLL with 1.5×–5× multiplication factors |
| On-Chip Memory | 2 KB IRAM + 8 KB XRAM; no on-chip ROM - requires external program memory or bootloader-initiated flash load |
| CAN Interface | Dual CAN 2.0B controllers (CAN1 & CAN2), each with 15 message objects and full/basic CAN mode support |
| ADC | 12-channel 10-bit SAR ADC with programmable conversion time down to 7.8 µs per sample |
| Package | 128-pin TQFP (14 × 14 mm, 0.4 mm pitch), with 93 configurable GPIO lines and selectable input thresholds |
| Power Modes | Idle, Sleep, and Power Down modes with oscillator watchdog and programmable watchdog timer for fail-safe recovery |
Pinout & Package
SAK-C161CS-LF is housed in a 128-pin Thin Quad Flat Package (TQFP) with 0.4 mm lead pitch and exposed thermal pad. Pin assignments support multiplexed address/data bus (8-/16-bit), five programmable chip-select outputs, and dual CAN transceiver interfacing on Port 4 and Port 7.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RSTIN / RSTOUT | Reset input/output | Asynchronous reset assertion; RSTOUT provides synchronized reset signal for external peripherals |
| XTAL1 / XTAL2 / XTAL3 / XTAL4 | Crystal oscillator inputs | Supports main 25 MHz crystal (XTAL1/XTAL2) and auxiliary 32 kHz RTC crystal (XTAL3/XTAL4) |
| P3.10 / P3.11 / P3.12 / P3.13 / P3.15 | CAN1 physical layer interface | Configurable as CAN1 TX/RX, CLKOUT, SCLK, and FOUT - enables direct connection to CAN transceiver without glue logic |
| P4.0–P4.7 / P7.4–P7.7 | CAN2 physical layer interface | Multi-function pins assignable to CAN2 TX/RX and CC28IO–CC31IO for extended message object routing |
| EA / ALE / RD / WR/WRL / READY | External bus control | Enables demultiplexed 16-bit external memory interface with hold/halt arbitration and programmable wait-state insertion |
Key Features
| Feature | Design Value |
|---|---|
| Dual CAN 2.0B Controllers | Independent CAN1 and CAN2 modules with 15 message objects each, supporting concurrent high-speed (1 Mbps) and low-speed diagnostic traffic |
| Programmable Interface Routing | Peripheral signals (CAN, SDLM, SPI, I²C) dynamically assigned to multiple port pins, enabling board-level routing optimization |
| 12-Channel 10-bit ADC | Hardware-triggered sampling with programmable conversion time (7.8–100 µs), eliminating software polling overhead in sensor monitoring |
| Peripheral Event Controller (PEC) | 8-channel DMA-like data transfer engine that moves data between peripherals and memory without CPU intervention |
| On-Chip Bootstrap Loader | Enables in-system programming via UART or CAN without external programmer - critical for field firmware updates |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Subsystem |
|---|---|
Use Scenario: Centralized management of lighting, door locks, wipers, and HVAC in passenger vehicles. IC Role / Device Role / Timing Role: Primary MCU coordinating CAN-based sensor/actuator nodes with deterministic response under 100 µs interrupt latency. Use Value: Dual CAN interfaces isolate comfort network (CAN1) from powertrain diagnostics (CAN2), preventing bus contention during OBD-II sessions. | Use Scenario: Standalone subsystem for throttle actuation, idle speed control, and fuel pump monitoring in modular ECU architectures. IC Role / Device Role / Timing Role: Real-time controller executing closed-loop PID algorithms at 10 kHz using hardware-timed ADC triggers and PWM outputs. Use Value: 7.8 µs ADC conversion time and PEC-assisted data movement reduce CPU load by >40% versus polled acquisition in torque calculation loops. |
| Commercial Vehicle Gateway | Industrial CAN Data Logger |
Use Scenario: Protocol translation between J1939 (heavy-duty CAN) and LIN/UART networks in truck trailer systems. IC Role / Device Role / Timing Role: Bridge MCU with dual CAN ports operating at different bit rates (250 kbps and 500 kbps) and independent message filtering. Use Value: Programmable sample time and 16-priority interrupt system ensure jitter-free timestamping of J1939 parameter groups during gateway forwarding. | Use Scenario: Standalone environmental monitoring unit logging temperature, pressure, and vibration data over CANopen networks in factory automation. IC Role / Device Role / Timing Role: Autonomous data acquisition node with RTC-synchronized event logging and CAN message buffering in XRAM. Use Value: 8 KB on-chip XRAM provides sufficient buffer space for 2+ seconds of 100 Hz sensor data before CAN transmission, avoiding packet loss during bus congestion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-CAN microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAK-C161CS-32RF | Includes 256 KB on-chip mask ROM; identical pinout and peripheral set | Fixed firmware deployment only - no field update capability without external memory | Select when production code is finalized and boot security via ROM is required |
| SAK-C167CS-LM | Enhanced C167 core (16-bit, 32-bit multiply), 32 KB IRAM, single CAN channel, 144-pin LQFP | Lacks second CAN controller; higher IRAM supports complex RTOS stacks but increases PCB area | Select when CAN redundancy is unnecessary and deterministic RTOS scheduling outweighs dual-CAN need |
Compared with SAK-C161CS-32RF, the LF variant trades mask ROM for bootloader flexibility; compared with SAK-C167CS-LM, it prioritizes dual-CAN determinism and compact 128-pin layout over raw compute headroom and memory size.
Availability
SAK-C161CS-LF is available at Aetrix Electronics and suitable for automotive body control modules, commercial vehicle gateways, industrial CAN data loggers, and engine control subsystems requiring stable component supply across extended product lifecycles.
Supply support for SAK-C161CS-LF 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 manufacturing and R&D centers.
The C166 family - including the SAK-C161CS-LF - was engineered for deterministic real-time control in automotive and industrial environments, emphasizing CAN integration, low-latency interrupt response, and robust peripheral co-processing.
FAQ
Does SAK-C161CS-LF include on-chip flash or ROM memory?
No. The "LF" suffix indicates this variant has no on-chip program memory - it relies on external ROM, flash, or in-system programming via the bootstrap loader. Unlike the "32RF" variant (256 KB mask ROM), the LF version offers full firmware update flexibility but requires external memory interface design.
What is the function of the XTAL3/XTAL4 pins?
XTAL3 and XTAL4 connect to a 32.768 kHz crystal to drive the on-chip real-time clock (RTC) independently of the main 25 MHz system clock. This enables battery-backed timekeeping during sleep modes and accurate timestamping of CAN messages without CPU wake-up.
Can SAK-C161CS-LF operate without an external crystal?
Yes - it supports direct clock input (up to 25 MHz) on XTAL1, bypassing the crystal oscillator circuit. However, the 32 kHz RTC requires XTAL3/XTAL4 or an external 32 kHz clock source; omission disables RTC functionality but does not prevent core operation.
How many CAN message objects are supported per channel?
Each CAN controller (CAN1 and CAN2) supports up to 15 independent message objects, configurable as transmit, receive, or self-reception buffers. Message filtering, masking, and priority arbitration are handled entirely in hardware, reducing CPU overhead during high-traffic bus conditions.
SAK-C161CS-LF CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 128-LQFP
- Series:
- C16xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Core Processor:
- C166
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 93
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 10K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
SAK-C161CS-LF CA FAQ
1.How can I place an order for SAK-C161CS-LF CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SAK-C161CS-LF CA 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 SAK-C161CS-LF CA reliable?
The price and inventory of SAK-C161CS-LF CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAK-C161CS-LF CA is usually 5 days.
3.What payment methods are accepted for SAK-C161CS-LF CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAK-C161CS-LF CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAK-C161CS-LF CA?
SAK-C161CS-LF CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAK-C161CS-LF CA 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 SAK-C161CS-LF CA?
For technical support, including SAK-C161CS-LF CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAK-C161CS-LF CA requirements.
6.How does Aetrix verify that SAK-C161CS-LF CA is sourced from the original manufacturer or authorized distributors?
All SAK-C161CS-LF CA 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 SAK-C161CS-LF CA meets industry standards.
7.What is the process for return or replacement of SAK-C161CS-LF CA?
All SAK-C161CS-LF CA units undergo pre-shipment inspection (PSI). If there is an issue with SAK-C161CS-LF CA, 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 SAK-C161CS-LF CA part is unused and in its original packaging.
Return procedure for SAK-C161CS-LF CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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