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STMicroelectronics STM8AL3188TAX
- Part No.:
- STM8AL3188TAX
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AL3188TAX.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,640
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Product details
Overview
STM8AL3188TAX from STMicroelectronics is an AEC-Q100 Grade 1 qualified automotive 8-bit ultra-low-power microcontroller featuring 64 Kbytes Flash, 4 Kbytes RAM, RTC with ±0.5 ppm digital calibration, 12-bit ADC (1 Msps, 28 channels), dual 12-bit DACs, two ultra-low-power comparators, LCD controller (8×40), and three USARTs supporting LIN 2.0 and IrDA - deployed in battery-powered vehicle body control modules requiring extended sleep autonomy.
For engineers reviewing the STM8AL3188TAX datasheet, STM8AL3188TAX pinout, STM8AL3188TAX application, or STM8AL3188TAX equivalent, key selection criteria include low-power mode current (400 nA Halt), RTC accuracy under temperature variation, LCD segment drive capability, dual DAC rail-to-rail output buffering, and SWIM-based non-intrusive debugging support.
Technical Context
The STM8AL3188TAX implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz max frequency and supporting up to 40 external interrupt sources. Its clock system integrates dual crystal oscillators (32 kHz LSE + 1–16 MHz HSE), factory-trimmed 16 MHz HSI RC, and 38 kHz LSI RC with clock security system for fail-safe operation.
Power management includes five programmable low-power modes: Wait (5.9 µA), Low-power Wait (3 µA), Active-Halt with full RTC (1.4 µA), and Halt (400 nA) with 4.7 µs wake-up time. The embedded reset block features 5-programmable BOR thresholds, ultra-low-power POR/PDR, and PVD for supply monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Harvard, 3-stage pipeline STM8 CPU delivering 16 MIPS at 16 MHz - enables deterministic real-time response in safety-critical body electronics. |
| Flash / EEPROM | 64 Kbytes Flash with ECC and RWW; 2 Kbytes data EEPROM with ECC - supports field firmware updates without halting critical functions. |
| Halt Mode Current | 400 nA at VDD = 1.65–3.6 V - enables multi-year battery life in always-on vehicle entry systems. |
| RTC Accuracy | ±0.5 ppm with digital calibration - maintains calendar integrity over automotive temperature range (−40 to +125 °C). |
| ADC Performance | 12-bit, 1 Msps, 28-channel with internal temp sensor and reference voltage - enables simultaneous cabin sensor monitoring (temp, humidity, light). |
| DAC Output | Dual 12-bit buffered DACs on PB4–PB6 - drives analog actuators (e.g., mirror heater control, HVAC valve bias) with rail-to-rail swing. |
| LCD Drive | 8×40 or 4×44 segments with integrated step-up converter - powers segmented displays in instrument clusters without external boost IC. |
Pinout & Package
LQFP80 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, with 67 I/Os - all mappable to interrupt vectors and supporting flexible PCB layout for EMI-sensitive automotive zones.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Power supply / Ground | Dual VDD/VSS pairs per quadrant reduce ground bounce and improve noise immunity in mixed-signal operation. |
| NRST | Active-low reset input | Internal pull-up; accepts Schmitt-triggered signal - ensures robust reset assertion during cold-cranking transients. |
| SWIM | Single-wire interface module | Non-intrusive debug port sharing PA1 - enables in-system programming and real-time trace without dedicated JTAG pins. |
| PA0–PA7, PB0–PB7, etc. | General-purpose I/O | 67 total I/Os with 50 nA ultra-low leakage - minimizes battery drain in deep sleep across all pins simultaneously. |
| OSC_IN/OSC_OUT | HSE crystal oscillator terminals | Supports 1–16 MHz external crystal - provides precise timing source for LIN communication and RTC synchronization. |
| LSE_IN/LSE_OUT | LSE crystal oscillator terminals | Drives 32.768 kHz crystal for RTC calendar - enables accurate timekeeping during Halt mode with 1.4 µA consumption. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Halt mode | 400 nA consumption with full register retention and RTC running - extends battery life in keyless entry receivers. |
| Programmable BOR thresholds | 5 selectable voltage levels (1.62–2.8 V) - allows safe brown-out detection across varying battery states in 12 V automotive systems. |
| Dual DAC with buffer | Two independent 12-bit outputs with rail-to-rail buffered drivers on PB4–PB6 - eliminates need for external op-amps in analog actuator interfaces. |
| Advanced anti-tamper detection | Hardware-monitored tamper pins with interrupt generation - secures immobilizer and door lock MCU against physical intrusion attempts. |
| SWIM debug interface | Single-pin, non-intrusive programming and real-time debugging - reduces PCB footprint and avoids conflict with functional I/Os. |
Applications
| Body Control Module (BCM) | Smart Rearview Mirror |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, interior lighting, and trunk release in modern vehicles. IC Role / Device Role / Timing Role: Main MCU executing LIN slave protocol, managing GPIO-driven relays and PWM-controlled LED dimming. Use Value: Ultra-low Halt current (400 nA) enables >10-year battery backup for retained functionality during vehicle off-state. |
Use Scenario: Auto-dimming electrochromic mirror with ambient light sensing and glare detection. IC Role / Device Role / Timing Role: Sensor fusion hub processing ADC inputs from photodiodes and driving DAC-biased electrochromic cell voltage. Use Value: Dual 12-bit DACs with output buffers provide precise, ripple-free bias control - eliminating external amplifiers and reducing BOM count. |
| Instrument Cluster Display | Automotive Tire Pressure Monitor (TPMS) Receiver |
Use Scenario: Driving segmented LCD display for speedometer, fuel gauge, and warning indicators. IC Role / Device Role / Timing Role: LCD controller with integrated step-up converter driving 8×40 segments directly from 3.3 V supply. Use Value: On-chip boost eliminates external DC-DC converter - reduces component count and improves reliability in space-constrained dash layouts. |
Use Scenario: Receiving and decoding 433/315 MHz TPMS signals via UART-linked RF transceiver. IC Role / Device Role / Timing Role: Low-power host MCU waking on USART RX interrupt, validating CRC, and updating CAN message via LIN gateway. Use Value: Fast 4.7 µs wake-up from Halt mode ensures timely response to RF packet arrival - minimizing missed alerts during deep sleep. |
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 |
|---|---|---|---|
| STM8AL3L88TAX | Includes LCD controller with 4×44 segment support; identical core, memory, and power specs. | Required when driving larger segmented displays (e.g., center console UI); not suitable for non-LCD designs due to pin allocation. | Select STM8AL3L88TAX only if LCD segment count exceeds 8×40 or requires 4×44 configuration. |
| RL78/F13-GB | Renesas RL78 core (16-bit), 64 KB Flash, 1.6–5.5 V operation, 290 nA Halt - lower sleep current but no integrated LCD driver or dual DAC. | Better suited for general-purpose sensor nodes; lacks automotive-grade RTC calibration and LIN protocol hardware acceleration. | Choose RL78/F13-GB for cost-sensitive non-LCD applications where sub-300 nA Halt is mandatory and LIN is software-implemented. |
Compared with STM8AL3L88TAX, the STM8AL3188TAX saves PCB area by omitting unused LCD segment pins while retaining identical low-power performance and analog peripherals; versus RL78/F13-GB, it delivers superior automotive integration via hardware LIN support, calibrated RTC, and dual buffered DACs - reducing firmware complexity and external component count.
Availability
STM8AL3188TAX is available at Aetrix Electronics and suitable for automotive body electronics, instrument cluster displays, and smart mirror systems requiring stable component supply across extended product lifecycles.
Supply support for STM8AL3188TAX 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, sensors, and automotive-grade silicon.
The STM8AL ultra-low-power family targets automotive body electronics with AEC-Q100 Grade 1 qualification, emphasizing extended battery life, robust EMC behavior, and integrated analog peripherals for reduced system-level BOM.
FAQ
What is the maximum operating temperature range for the STM8AL3188TAX?
The STM8AL3188TAX is qualified for −40 °C to +125 °C ambient operation per AEC-Q100 Grade 1 requirements. This rating is validated across all electrical parameters including Flash endurance, RTC accuracy, and ADC linearity - ensuring reliable function in engine bay proximity or under-hood control units.
Does the STM8AL3188TAX support LIN 2.0 physical layer compliance?
Yes - the integrated USARTs support LIN 2.0 frame formatting, automatic sync field detection, and break field generation. Hardware LIN support includes baud rate generation tolerance (±1.5%) and dominant timeout detection, enabling certified LIN slave node implementation without external transceivers beyond the PHY layer.
How does the RTC maintain ±0.5 ppm accuracy across temperature?
The RTC uses digital calibration against the 32.768 kHz LSE crystal, applying programmable trim values stored in option bytes. Calibration compensates for crystal frequency drift across −40 to +125 °C, achieving ±0.5 ppm error - verified per ISO 16750-4 and maintained even during Active-Halt mode with RTC powered by VBAT.
Can the dual DAC outputs drive capacitive loads directly?
No - the DAC outputs (PB4–PB6) feature rail-to-rail buffered drivers rated for ≤100 pF capacitive load. Driving larger capacitive loads (e.g., >200 pF) causes instability and settling time degradation. For such cases, an external unity-gain buffer with >10 MHz GBW is required to maintain monotonicity and 12-bit accuracy.
STM8AL3188TAX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM8A
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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, POR, PWM, WDT
- Number of I/O:
- 41
- 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 25x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AL3188TAX FAQ
1.How can I place an order for STM8AL3188TAX through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AL3188TAX 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 STM8AL3188TAX reliable?
The price and inventory of STM8AL3188TAX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AL3188TAX is usually 5 days.
3.What payment methods are accepted for STM8AL3188TAX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AL3188TAX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AL3188TAX?
STM8AL3188TAX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AL3188TAX 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 STM8AL3188TAX?
For technical support, including STM8AL3188TAX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AL3188TAX requirements.
6.How does Aetrix verify that STM8AL3188TAX is sourced from the original manufacturer or authorized distributors?
All STM8AL3188TAX 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 STM8AL3188TAX meets industry standards.
7.What is the process for return or replacement of STM8AL3188TAX?
All STM8AL3188TAX units undergo pre-shipment inspection (PSI). If there is an issue with STM8AL3188TAX, 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 STM8AL3188TAX part is unused and in its original packaging.
Return procedure for STM8AL3188TAX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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