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STMicroelectronics STM8AL3136UCY
- Part No.:
- STM8AL3136UCY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
STM8AL3136UCY.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 32VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:2,433
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Product details
Overview
STM8AL3136UCY from STMicroelectronics is an AEC-Q100 qualified automotive 8-bit ultra-low-power MCU featuring 32 Kbyte Flash, 2 Kbyte RAM, 1 Kbyte data EEPROM, 12-bit ADC (25 channels, up to 1 Mbps), 12-bit DAC with output buffer, two ultra-low-power comparators, RTC with BCD calendar and auto-wakeup, and integrated SPI/I²C/USART interfaces. It operates from 1.65 V to 3.6 V across –40 °C to 125 °C and targets battery-powered automotive body electronics.
For engineers reviewing the STM8AL3136UCY datasheet, STM8AL3136UCY pinout, STM8AL3136UCY application, or STM8AL3136UCY equivalent, key selection criteria include its five low-power modes (down to 400 nA in Halt with PDR), 16 MHz max clock, 41 mappable I/Os, LCD support absence (per device summary Table 1), and LQFP32 package compatibility for space-constrained automotive modules.
Technical Context
The STM8AL3136UCY implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. Its clock system integrates dual crystal oscillators (1–16 MHz HSE, 32 kHz LSE), factory-trimmed 16 MHz RC, and 38 kHz low-consumption RC with clock security system.
Power management includes five configurable low-power modes, programmable voltage detector (PVD), ultra-safe BOR with five thresholds, and ultra-low leakage per I/O (50 nA). The RTC supports BCD calendar, alarm interrupt, and periodic auto-wakeup from Halt with 0.95 ppm resolution when clocked by LSE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Harvard, 3-stage pipeline STM8 CPU; enables deterministic instruction fetch and execution for real-time automotive control. |
| Max Clock Frequency | 16 MHz; delivers 16 CISC MIPS peak performance while maintaining ultra-low power consumption in run mode. |
| Flash Memory | 32 Kbyte; supports 20-year data retention at 55 °C and in-system programming via SWIM interface. |
| ADC Resolution & Speed | 12-bit, up to 1 Mbps sampling rate across 25 channels; includes internal temp sensor and reference voltage for embedded diagnostics. |
| DAC Output | 12-bit with integrated output buffer; enables direct analog signal generation without external op-amp buffering. |
| Low-Power Halt Current | 400 nA with PDR enabled; allows multi-year battery operation in always-on automotive wake-up applications. |
| Operating Temperature | –40 °C to 125 °C; qualified per AEC-Q100 Grade 0 for under-hood and body control module deployment. |
| I/O Count | Up to 41 pins, all mappable to interrupt vectors; supports flexible peripheral routing and fault-tolerant signal assignment. |
Pinout & Package
LQFP32 package (7 × 7 mm, 0.8 mm pitch), RoHS-compliant, ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O domain operation; supports 1.65–3.6 V supply range with low-noise decoupling. |
| NRST | Active-low reset input | Accepts external reset pulse; integrates ultra-low-power POR/PDR and programmable BOR with five threshold options. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7 | General-purpose I/O ports | All 41 I/Os support interrupt mapping, alternate functions (SPI/I²C/USART), and ultra-low leakage (50 nA) in standby. |
| CLK, OSC_IN/OSC_OUT | External clock input/output | Supports 1–16 MHz HSE crystal; paired with internal 32 kHz LSE oscillator for RTC independence from main clock domain. |
| SWIM | Single-wire interface for debug | Enables non-intrusive on-chip programming and debugging without halting real-time operation. |
Key Features
| Feature | Design Value |
|---|---|
| Five Low-Power Modes | Includes active-halt with full RTC (1.3 μA) and halt with PDR (400 nA); enables precise energy budgeting for intermittent sensing tasks. |
| Ultra-Low-Leakage I/O | 50 nA per pin in standby; minimizes battery drain in always-connected automotive nodes such as door modules or seat controllers. |
| Integrated Analog Peripherals | 12-bit ADC (25 ch, 1 Mbps), 12-bit DAC with buffer, two rail-to-rail comparators; eliminates need for external signal conditioning ICs. |
| AEC-Q100 Qualification | Grade 0 (–40 °C to 125 °C); validated for automotive body electronics including lighting, HVAC, and smart sensors. |
| Memory Reliability | 300 kcycle EEPROM endurance and 20-year Flash data retention at 55 °C; ensures long-term firmware and calibration storage integrity. |
Applications
| Automotive Door Module | Smart Lighting Control |
|---|---|
Use Scenario: Centralized control of window lift, mirror adjustment, and interior lighting in vehicle door assemblies. IC Role / Device Role / Timing Role: Main MCU executing motor control logic, switch debouncing, LIN communication, and real-time PWM dimming. Use Value: Ultra-low-power halt mode (400 nA) extends battery life during vehicle sleep; 41 mappable I/Os simplify integration of multiple sensors and actuators. |
Use Scenario: Adaptive LED headlight intensity and color tuning based on ambient light and vehicle speed. IC Role / Device Role / Timing Role: Analog signal acquisition (ambient light sensor), DAC-driven current control, and LIN bus coordination with body controller. Use Value: Integrated 12-bit DAC with output buffer drives LED drivers directly; 12-bit ADC supports high-precision lux measurement across temperature. |
| Engine Bay Sensor Node | Automotive HVAC Actuator |
Use Scenario: Temperature and pressure monitoring near engine compartment with wireless wake-up capability. IC Role / Device Role / Timing Role: Data acquisition node with RTC-triggered periodic wake-up, ADC sampling, and USART transmission to gateway ECU. Use Value: RTC auto-wakeup from Halt (0.95 ppm resolution) ensures accurate timing over temperature; –40 °C to 125 °C rating guarantees reliability under hood. |
Use Scenario: Position feedback and motor drive control for blend air flaps in climate control systems. IC Role / Device Role / Timing Role: Closed-loop servo control using quadrature encoder inputs, PWM output, and comparator-based end-stop detection. Use Value: Two 16-bit timers with quadrature encoder interface and two ultra-low-power comparators enable robust, low-cost actuator positioning without external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AL3166UCY | 32 Kbyte Flash, 2 Kbyte RAM, same package; adds LCD controller (not present in STM8AL3136UCY). | Requires LCD segment driving (e.g., instrument cluster); unnecessary overhead for non-display applications. | Select STM8AL3136UCY when LCD functionality is not required-reduces cost and simplifies layout. |
| STM8L152C6T6 | Non-automotive grade (industrial temp only: –40 °C to 85 °C); lacks AEC-Q100 qualification and 125 °C support. | Suitable for non-safety-critical cabin modules but not under-hood or chassis applications. | Choose STM8AL3136UCY for AEC-Q100 compliance and extended temperature range in production automotive designs. |
Compared with STM8AL3166UCY, STM8AL3136UCY removes unused LCD circuitry for lower cost and power; versus STM8L152C6T6, it provides mandatory AEC-Q100 Grade 0 qualification and 125 °C operation for demanding automotive environments.
Availability
STM8AL3136UCY is available at Aetrix Electronics and suitable for automotive body electronics, battery-powered sensor nodes, and HVAC actuator control requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for STM8AL3136UCY 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, and automotive-grade silicon.
The STM8AL3x series targets ultra-low-power automotive applications, emphasizing AEC-Q100 qualification, extended temperature operation, and integrated analog peripherals to reduce system-level BOM count in body electronics.
FAQ
What is the maximum operating temperature for STM8AL3136UCY?
The STM8AL3136UCY is rated for continuous operation from –40 °C to 125 °C and is AEC-Q100 Grade 0 qualified. This specification is validated per automotive stress test standards and applies to all operating modes including Run, Wait, and Halt, making it suitable for under-hood applications where ambient temperatures exceed 105 °C.
Does STM8AL3136UCY support LCD driving?
No. STM8AL3136UCY belongs to the STM8AL313x/4x/6x subfamily "without LCD" (per Table 1 of DS7106 Rev 9). It lacks the LCD controller and step-up converter found in STM8AL3Lxx variants. Pin assignments and register maps confirm no LCD segment/COM driver functionality is implemented.
What debug interface does STM8AL3136UCY use?
STM8AL3136UCY uses the SWIM (Single-Wire Interface Module) protocol for on-chip programming and non-intrusive debugging. It requires only one dedicated pin (SWIM) and supports full flash read/write, breakpoint setting, and real-time variable inspection without halting peripheral operation.
How many I/O pins support external interrupt capability?
All 41 I/O pins on STM8AL3136UCY are mappable to interrupt vectors, as confirmed in Section 3.2.2 (Interrupt controller) and Table 5 (Pin description) of DS7106 Rev 9. Each port pin can be individually configured for rising/falling/level-sensitive edge detection and routed to any of the 40 external interrupt sources.
STM8AL3136UCY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- STM8A
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- STM8A
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 30
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 22x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AL3136UCY FAQ
1.How can I place an order for STM8AL3136UCY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AL3136UCY 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 STM8AL3136UCY reliable?
The price and inventory of STM8AL3136UCY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AL3136UCY is usually 5 days.
3.What payment methods are accepted for STM8AL3136UCY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AL3136UCY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AL3136UCY?
STM8AL3136UCY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AL3136UCY 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 STM8AL3136UCY?
For technical support, including STM8AL3136UCY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AL3136UCY requirements.
6.How does Aetrix verify that STM8AL3136UCY is sourced from the original manufacturer or authorized distributors?
All STM8AL3136UCY 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 STM8AL3136UCY meets industry standards.
7.What is the process for return or replacement of STM8AL3136UCY?
All STM8AL3136UCY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AL3136UCY, 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 STM8AL3136UCY part is unused and in its original packaging.
Return procedure for STM8AL3136UCY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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