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Infineon Technologies SAK-C868P-1SR BA
- Part No.:
- SAK-C868P-1SR BA
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 38-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SAK-C868P-1SR BA.pdf
- Description:
- IC MCU 8BIT 8KB RAM 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,887
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Product details
Overview
SAK-C868P-1SR BA from Infineon Technologies is an 8-bit single-chip microcontroller based on the C800 core (8051 superset), featuring 8 KB on-chip program RAM, 256-byte on-chip RAM, 256-byte XRAM, and a 40 MHz internal CPU clock. It integrates an 8-bit UART, three 16-bit timers, a 5-channel 8-bit ADC, and a 3-channel 16-bit capture/compare unit for PWM generation. It operates from a single 3.3 V supply with internal 2.5 V core regulation and supports power-down wake-up via INT0 or RxD in automotive-grade temperature range (–40 to +125 °C).
For engineers reviewing the SAK-C868P-1SR BA datasheet, SAK-C868P-1SR BA pinout, SAK-C868P-1SR BA application, or SAK-C868P-1SR BA equivalent, this device is selected for embedded control in harsh-environment automotive subsystems requiring deterministic real-time I/O, analog sensing, and serial communication with low-power sleep modes.
Technical Context
The C868P implements a superset of the 8051 ISA with eight datapointers and a 300 ns instruction cycle at 37.5 MHz CPU clock. Its memory architecture includes separate on-chip ROM/RAM variants - this part (SAK-C868P-1SR BA) uses 8 KB program RAM, boot-loaded via 4 KB Boot ROM supporting in-system programming.
Peripherals are tightly coupled to timing resources: ADC conversion start is hardware-synchronized to Timer 12/13; UART baud rate can be generated by Timer 1 or 2; and the 3-channel capture/compare unit provides independent PWM outputs with configurable polarity and dead-time insertion capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C800 (8051 superset) with 8 datapointers, enabling efficient pointer arithmetic for multi-buffer data handling |
| Max CPU Clock | 40 MHz internal; 300 ns instruction cycle at 37.5 MHz - supports hard real-time loop execution ≤ 3.3 µs per 11-cycle instruction |
| Memory | 8 KB on-chip program RAM + 4 KB Boot ROM + 256 B on-chip RAM + 256 B XRAM - enables field firmware updates without external memory |
| ADC | 5-channel 8-bit SAR ADC with hardware trigger sync to Timer 12/13 - ensures precise timing-critical sampling in motor control loops |
| PWM Generation | 3-channel 16-bit capture/compare unit + 1-channel 16-bit compare unit - delivers up to 3 independent PWM outputs with 65,536-step resolution |
| Power Supply | Single 3.3 V supply with internal 2.5 V core regulator - eliminates need for external core LDO in automotive PCB layout |
| Temperature Range | –40 °C to +125 °C (automotive grade) - qualified for engine bay and transmission control module deployment |
Pinout & Package
SAK-C868P-1SR BA is packaged in P-TSSOP-38-1 (38-pin thin shrink small outline package), lead-free and RoHS-compliant. Pin functions are validated per Infineon's C868 Data Sheet V1.0 (2003), Figure 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TxD | UART Transmit Output | Full-duplex serial output with programmable drive strength; used for diagnostic logging or ECU interconnect |
| P1.1/EXF2 | External Flag Input | Edge-sensitive flag input for event capture or synchronization with external logic states |
| P1.5/CCPOS0/T2/INT0/AN0 | Multi-function Pin | Combines PWM output (CCPOS0), Timer 2 input, external interrupt 0, and ADC channel 0 - enables compact sensor+actuator interface |
| P3.6/COUT60 | Capture Output Channel 0 | Dedicated PWM output with configurable polarity and edge alignment - used for driving gate drivers in DC-DC converters |
| XTAL1/XTAL2 | Crystal Oscillator Inputs | Supports external crystal (6.67–10.67 MHz, 50% duty cycle) or ceramic resonator for system clock generation |
| VDDC/VSSC | Core Power/Ground | 2.5 V core supply pins - isolated from I/O supply (VDDP/VSSP) to reduce noise coupling into analog peripherals |
Key Features
| Feature | Design Value |
|---|---|
| In-system programming (ISP) | Enabled via 4 KB Boot ROM - allows field firmware updates over UART without JTAG debugger or external programmer |
| Hardware-synchronized ADC | Start-of-conversion triggered directly by Timer 12/13 overflow - eliminates software latency jitter in closed-loop control |
| Multi-level power management | Three low-power modes (slow-down, idle, power-down) with wake-up on INT0 or RxD - extends battery life in always-on vehicle modules |
| Automotive-grade I/O | Port 1/3 sink current up to 10 mA per pin (43 mA total @ 100 °C) - drives LEDs, relays, or optocouplers directly without buffer stages |
| Brown-out detection | Monitors VDDP and resets CPU if voltage drops below threshold - prevents erratic operation during cold-cranking transients |
Applications
| Engine Control Unit (ECU) Subsystem | Body Control Module (BCM) Lighting |
|---|---|
Use Scenario: Monitoring throttle position, coolant temperature, and crankshaft angle while generating spark timing signals. IC Role / Device Role / Timing Role: Real-time sensor acquisition, PID computation, and synchronized PWM output for ignition coil drivers. Use Value: 300 ns instruction cycle and hardware ADC sync enable sub-microsecond timing accuracy critical for misfire detection. | Use Scenario: Controlling LED headlamp brightness, turn signal flash rate, and interior ambient lighting dimming profiles. IC Role / Device Role / Timing Role: PWM generator with 16-bit resolution and independent channel control for smooth, flicker-free dimming. Use Value: Three dedicated 16-bit capture/compare channels allow simultaneous control of high-beam, low-beam, and DRL outputs with phase-shifted timing. |
| Transmission Control Interface | Electric Power Steering (EPS) Sensor Hub |
Use Scenario: Reading gear position sensors and solenoid valve feedback while managing CAN message framing and diagnostics. IC Role / Device Role / Timing Role: Dedicated UART with baud-rate generator (Timer 1/2) and interrupt-driven I/O for deterministic CAN node bridging. Use Value: Four priority-level interrupts and 13 vectors ensure timely response to solenoid fault signals without missing safety-critical deadlines. | Use Scenario: Aggregating torque, motor position, and temperature sensor data from multiple analog and digital sources before forwarding to main EPS MCU. IC Role / Device Role / Timing Role: Analog front-end hub with 5-channel ADC, hardware-triggered sampling, and UART-based sensor fusion reporting. Use Value: Single 3.3 V supply with internal 2.5 V core regulator simplifies power design in space-constrained EPS motor housing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAK-C868A-1SR BA | Same core and peripherals, but includes enhanced watchdog timer with windowed mode and extended brown-out hysteresis | Required for ASIL-B compliant subsystems where fault detection coverage must exceed basic reset-on-failure | Select when functional safety requirements mandate additional watchdog supervision beyond standard timeout reset |
| SAK-C868P-1SG BA | Identical package and pinout, but rated for –40 to +85 °C industrial temperature range instead of automotive | Suitable for cabin electronics (e.g., infotainment HVAC controls) not exposed to under-hood thermal stress | Choose for cost-sensitive non-engine-bay applications where extended temperature qualification is unnecessary |
Compared with SAK-C868A-1SR BA, the SAK-C868P-1SR BA lacks windowed watchdog support but matches its peripheral set and performance; versus SAK-C868P-1SG BA, it adds full automotive temperature qualification at no pinout or code change - enabling reuse of same PCB across engine and cabin variants.
Availability
SAK-C868P-1SR BA is available at Aetrix Electronics and suitable for engine control units, body control modules, transmission interfaces, and electric power steering sensor hubs requiring stable component supply across automotive production lifecycles.
Supply support for SAK-C868P-1SR BA 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 security controllers, with global R&D and manufacturing infrastructure.
The C868 family belongs to Infineon's legacy C800 microcontroller product line, designed specifically for cost-sensitive, real-time automotive body and powertrain control applications requiring high reliability and extended temperature operation.
FAQ
What is the difference between SAK-C868P-1SR BA and SAK-C868-1SR BA?
The "P" suffix denotes the P-TSSOP-38-1 package variant, while the base SAK-C868-1SR BA was historically offered in P-DSO-28-1. Both share identical electrical specifications, memory map, and peripheral set, but differ in pin count, I/O count, and physical footprint - the P-TSSOP-38 version provides additional GPIO and ADC channels due to higher pin density.
Does SAK-C868P-1SR BA support JTAG debugging?
No. The SAK-C868P-1SR BA does not include JTAG or on-chip debug interface. In-circuit debugging is supported only via UART-based bootloader and SWD-like single-wire debug using the BSL (Boot Strap Loader) pin (ALE/BSL), requiring compatible Infineon programming tools such as DAS500 or third-party ISP adapters.
Can the 8 KB program RAM retain data during power-down mode?
No. The 8 KB program RAM is volatile and loses content when VDDP drops below operating threshold. However, the 256-byte on-chip RAM and 256-byte XRAM retain data in power-down mode if VDDP remains above 2.0 V and the internal regulator maintains VDDC - verified per Section 5.3.3 of the C868 Data Sheet V1.0.
Is there a recommended external crystal frequency for optimal UART baud rate accuracy?
Yes. A 7.3728 MHz crystal yields exact integer divisors for common UART baud rates (e.g., 9600, 19200, 38400 bps) when used with Timer 1 in 8-bit auto-reload mode, minimizing cumulative bit error across automotive ECU communication links.
SAK-C868P-1SR BA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width)
- Series:
- C5xx/C8xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Core Processor:
- C800
- Core Size:
- 8-Bit
- Speed:
- 40MHz
- Connectivity:
- UART/USART
- Peripherals:
- Brown-out Detect/Reset, PWM, WDT
- Number of I/O:
- 18
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- RAM
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 5x8b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
SAK-C868P-1SR BA FAQ
1.How can I place an order for SAK-C868P-1SR BA through Aetrix?
Please submit a Request for Quotation (RFQ) for SAK-C868P-1SR BA 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-C868P-1SR BA reliable?
The price and inventory of SAK-C868P-1SR BA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAK-C868P-1SR BA is usually 5 days.
3.What payment methods are accepted for SAK-C868P-1SR BA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAK-C868P-1SR BA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAK-C868P-1SR BA?
SAK-C868P-1SR BA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAK-C868P-1SR BA 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-C868P-1SR BA?
For technical support, including SAK-C868P-1SR BA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAK-C868P-1SR BA requirements.
6.How does Aetrix verify that SAK-C868P-1SR BA is sourced from the original manufacturer or authorized distributors?
All SAK-C868P-1SR BA 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-C868P-1SR BA meets industry standards.
7.What is the process for return or replacement of SAK-C868P-1SR BA?
All SAK-C868P-1SR BA units undergo pre-shipment inspection (PSI). If there is an issue with SAK-C868P-1SR BA, 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-C868P-1SR BA part is unused and in its original packaging.
Return procedure for SAK-C868P-1SR BA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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