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STMicroelectronics STM8AL3189TCY
- Part No.:
- STM8AL3189TCY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM8AL3189TCY.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,776
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Product details
Overview
STM8AL3189TCY from STMicroelectronics is an AEC-Q100 Grade 1 qualified automotive 8-bit ultra-low-power microcontroller featuring 64 Kbytes Flash, 4 Kbytes RAM, 2×12-bit DACs, 12-bit ADC (1 Msps, 28 channels), LCD controller (8×40), RTC with ±0.5 ppm digital calibration, and five low-power modes including Halt (400 nA). It operates from 1.8–3.6 V across –40 to 125 °C and targets battery-powered automotive body electronics.
For engineers reviewing the STM8AL3189TCY datasheet, STM8AL3189TCY pinout, STM8AL3189TCY application, or STM8AL3189TCY equivalent, key selection criteria include ultra-low standby current (400 nA Halt), integrated LCD driver for instrument clusters, dual DACs for analog actuator control, and automotive-grade reset/supply supervision with 5-programmable BOR thresholds.
Technical Context
The STM8AL3189TCY implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. It integrates a clock security system, three 16-bit general-purpose timers (with IC/OC/PWM and quadrature encoder), and one 16-bit advanced control timer for motor control applications.
Its analog subsystem includes two rail-to-rail ultra-low-power comparators (one with fixed threshold), a temperature sensor, internal reference voltage, and dual 12-bit DACs with output buffers-enabling closed-loop sensor conditioning and actuator drive without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Harvard, 3-stage pipeline STM8 CPU delivering 16 MIPS at 16 MHz |
| Flash / EEPROM / RAM | 64 Kbytes Flash with ECC and RWW; 2 Kbytes data EEPROM with ECC; 4 Kbytes RAM |
| ADC | 12-bit, up to 1 Msps, 28 input channels, integrated temp sensor and VREF |
| DAC | Two independent 12-bit DACs with output buffers; supports dual-mode synchronous output |
| Low-Power Modes | Halt (400 nA), Active-halt with RTC (1.4 µA), Low-power wait (3 µA), Wait, Low-power run (5.9 µA) |
| RTC Accuracy | ±0.5 ppm digital calibration over temperature, BCD calendar with alarm interrupt |
| Operating Range | 1.8–3.6 V supply; –40 to +125 °C ambient; AEC-Q100 Grade 1 qualified |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), thermally enhanced for automotive under-hood operation. Pin count and I/O mapping align with STM8AL3189 variant (non-LCD version).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Power supply / Ground | Dedicated analog/digital power domains with separate decoupling requirements |
| NRST | Active-low reset input | Supports ultra-low-power POR/PDR and programmable voltage detector (PVD) monitoring |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7, PG0–PG7, PH0–PH7 | General-purpose I/O | Up to 67 mappable GPIOs with interrupt capability; 50 nA ultra-low leakage per I/O |
| CLK_IN/CLK_OUT | External crystal oscillator interface | Supports 32 kHz LSE for RTC and 1–16 MHz HSE for main system clock |
| SWIM | Single-wire interface for debug | Enables non-intrusive in-circuit debugging and fast on-chip programming |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 certified for under-hood use up to +125 °C |
| Ultra-low-power RTC | BCD calendar with tamper detection and ±0.5 ppm accuracy using digital calibration |
| Dual 12-bit DACs | Synchronous or independent operation; buffered outputs eliminate need for external op-amps |
| Integrated LCD controller | Drives up to 8×40 segments with internal step-up converter-no external bias generator required |
| Advanced reset management | 5-programmable BOR thresholds plus PVD and ultra-low-power POR/PDR |
Applications
| Automotive Instrument Cluster | Body Control Module (BCM) |
|---|---|
Use Scenario: Driving analog gauges, LED backlighting, and segment LCD displays in vehicle dashboards. IC Role / Device Role / Timing Role: Primary MCU managing display rendering, sensor input aggregation, and real-time gauge updates via DAC and LCD controller. Use Value: Integrated 8×40 LCD driver and dual DACs reduce BOM by eliminating external display bias ICs and analog output stages. |
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and interior lighting. IC Role / Device Role / Timing Role: Low-power system controller handling LIN/USART communication, GPIO-driven actuators, and wake-on-event logic. Use Value: 400 nA Halt mode and fast 4.7 µs wake-up enable always-on responsiveness while meeting automotive quiescent current targets. |
| Engine Bay Sensor Node | Smart HVAC Actuator |
Use Scenario: Monitoring temperature, pressure, and voltage in high-temperature engine compartment locations. IC Role / Device Role / Timing Role: Signal-conditioning MCU interfacing with analog sensors via 12-bit ADC and internal temp sensor. Use Value: 125 °C rating, ±0.5 ppm RTC for time-stamped diagnostics, and 1 Msps ADC support high-fidelity sensor logging. |
Use Scenario: Closed-loop position control of HVAC blend doors using potentiometer feedback and stepper/motor drive. IC Role / Device Role / Timing Role: Real-time controller executing PID algorithms using dual DAC outputs and comparator-based zero-cross detection. Use Value: Two rail-to-rail comparators (one fixed-threshold) and dual synchronized DACs enable precise analog feedback without external comparators or DACs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive ultra-low-power MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AL3L89TCY | Includes full LCD controller (8×40); identical core/peripherals but adds LCD segment drivers and step-up converter | Required for LCD-based dashboards; not suitable where LCD is unused due to higher pin count and layout complexity | Select when driving multiplexed segment LCDs; avoid if only GPIO/ADC/DAC needed |
| STM32L071KBT6 | 32-bit ARM Cortex-M0+, 128 KB Flash, lower active current (115 µA/MHz), no integrated LCD or dual DAC | Better for firmware-intensive tasks; lacks native LCD/DAC-requires external components for same analog functions | Choose for higher code density or RTOS use; reject when analog integration and pin count efficiency are critical |
Compared with STM8AL3L89TCY, this part reduces pin count and cost where LCD is unnecessary; versus STM32L071KBT6, it delivers superior analog integration and deterministic 8-bit real-time response at lower system-level BOM cost.
Availability
STM8AL3189TCY is available at Aetrix Electronics and suitable for automotive instrument clusters, body control modules, and engine bay sensor nodes requiring stable component supply across extended temperature and long lifecycle commitments.
Supply support for STM8AL3189TCY 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, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade silicon.
This device belongs to the STM8AL ultra-low-power automotive MCU family, engineered specifically for battery-sensitive, high-reliability automotive body electronics with stringent AEC-Q100 and low-quiescent-current requirements.
FAQ
What is the maximum operating temperature for STM8AL3189TCY?
The STM8AL3189TCY is rated for continuous operation from –40 °C to +125 °C and is AEC-Q100 Grade 1 qualified, making it suitable for under-hood and dashboard applications where ambient temperatures exceed 105 °C. Thermal derating is not required within this range per datasheet Section 9.3.1.
Does STM8AL3189TCY support in-circuit debugging?
Yes-it features SWIM (Single-Wire Interface Module), enabling non-intrusive in-circuit debugging and programming via a single pin. SWIM supports full breakpoint, watchpoint, and memory inspection capabilities without halting real-time peripherals, as confirmed in Section 3.18 of the datasheet.
How many I/O pins are available in the LQFP64 package?
The STM8AL3189TCY in LQFP64 provides 54 usable GPIOs (excluding power, reset, and SWIM pins), all individually mappable to interrupt vectors. This count is verified in Table 5 ("High-density STM8AL3x8x pin description") and Figure 5 ("STM8AL3189 64-pin pinout") of the datasheet.
Is the RTC battery-backed when VDD is removed?
No-the RTC remains functional only during Active-halt mode (1.4 µA) with VDD applied; it does not support external VBAT backup. Timekeeping ceases upon full power removal. For persistent timekeeping, external supercapacitor or coin-cell support must be added to VDD rail per application design.
STM8AL3189TCY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM8A
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- STM8
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 54
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 28x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AL3189TCY FAQ
1.How can I place an order for STM8AL3189TCY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AL3189TCY 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 STM8AL3189TCY reliable?
The price and inventory of STM8AL3189TCY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AL3189TCY is usually 5 days.
3.What payment methods are accepted for STM8AL3189TCY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AL3189TCY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AL3189TCY?
STM8AL3189TCY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AL3189TCY 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 STM8AL3189TCY?
For technical support, including STM8AL3189TCY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AL3189TCY requirements.
6.How does Aetrix verify that STM8AL3189TCY is sourced from the original manufacturer or authorized distributors?
All STM8AL3189TCY 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 STM8AL3189TCY meets industry standards.
7.What is the process for return or replacement of STM8AL3189TCY?
All STM8AL3189TCY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AL3189TCY, 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 STM8AL3189TCY part is unused and in its original packaging.
Return procedure for STM8AL3189TCY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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