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STMicroelectronics STM8AL3188TCX
- Part No.:
- STM8AL3188TCX
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AL3188TCX.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,717
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Product details
Overview
STM8AL3188TCX 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 STM8AL3188TCX datasheet, STM8AL3188TCX pinout, STM8AL3188TCX application, or STM8AL3188TCX equivalent, key selection criteria include low-power mode current (1.4 µA in Active-halt with RTC), 67 GPIO mapping to interrupt vectors, SWIM-based non-intrusive debugging, and LQFP48 package compatibility with automotive PCB layout constraints.
Technical Context
The STM8AL3188TCX 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 RC, and clock security system for fail-safe operation.
Power management includes five programmable low-power modes - including Active-halt (1.4 µA with full RTC) and Halt (400 nA) - enabled by ultra-low leakage I/O (50 nA per pin), programmable BOR with five thresholds, and independent voltage detector (PVD). The RTC provides BCD calendar, alarm interrupt, and anti-tamper detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8 8-bit Harvard, 3-stage pipeline, 16 MIPS peak @ 16 MHz - enables deterministic real-time response in safety-critical body electronics. |
| Flash / EEPROM | 64 Kbytes Flash with RWW and ECC; 2 Kbytes data EEPROM - supports field firmware updates without full erase cycles. |
| Low-Power Consumption | Halt mode: 400 nA; Active-halt with RTC: 1.4 µA - extends battery life in always-on automotive modules (e.g., smart door handles). |
| Analog Peripherals | 12-bit ADC (1 Msps, 28 ch, internal temp sensor & ref); dual 12-bit DACs (PB4–PB6); 2 ultra-low-power comparators - enables sensor signal conditioning and actuator control in single-chip designs. |
| Communication Interfaces | 3× USART (LIN 2.0/IrDA), 2× SPI, Fast I²C (400 kHz SMBus/PMBus) - meets automotive sub-network requirements without external protocol translators. |
| Package & Temp Range | LQFP48 (7×7 mm); -40 °C to +125 °C - qualified for under-hood and cabin-mounted applications per AEC-Q100 Grade 1. |
| Debug & Security | SWIM interface for fast on-chip programming and non-intrusive debugging; 96-bit unique ID - supports secure boot and traceability in production. |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, with 67 total I/Os (48 pins available for user functions; remaining dedicated to power/ground/reset/clocks).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O domain operation across temperature and load transients. |
| NRST | Active-low reset input | Accepts external reset pulses; integrated ultra-low-power POR/PDR and programmable BOR prevent brownout-induced corruption. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7 | General-purpose I/O | All 67 GPIOs mappable to interrupt vectors; each supports 50 nA ultra-low leakage in Halt mode. |
| OSC_IN / OSC_OUT | HSE crystal oscillator terminals | Supports 1–16 MHz external crystal for precise timing; paired with clock security system for fault detection. |
| LSE_IN / LSE_OUT | LSE crystal oscillator terminals | Drives 32.768 kHz crystal for RTC calendar; enables ±0.5 ppm accuracy via digital calibration. |
| SWIM | Single-wire interface for debug/programming | Enables non-intrusive in-circuit debugging and flash programming using only one pin and no JTAG header. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C ambient, meeting stress test requirements for engine bay and cabin modules. |
| Ultra-low-power RTC | BCD calendar with alarm, tamper detection, and ±0.5 ppm accuracy - eliminates need for external RTC IC in telematics and access control units. |
| Flexible memory protection | Programmable read/write protection zones for Flash and EEPROM - enforces firmware IP security and prevents accidental overwrite during field updates. |
| Integrated LCD controller | Supports 8×40 or 4×44 segments with built-in step-up converter - enables direct drive of automotive instrument cluster displays without external bias circuitry. |
| DMA with 4-channel capability | Transfers data between ADC/DAC/SPI/I²C/USART and memory without CPU intervention - reduces active time and power in sensor acquisition loops. |
Applications
| Body Control Module (BCM) | Smart Door Handle System |
|---|---|
Use Scenario: Centralized control of lighting, window lift, mirror adjustment, and intrusion alerts in modern vehicles. IC Role / Device Role / Timing Role: Main MCU executing LIN-slave communication, PWM motor control, and wake-on-event logic from door switch inputs. Use Value: 1.4 µA Active-halt mode with RTC maintains real-time state and enables instant wake on proximity detection - critical for zero-latency entry response. |
Use Scenario: Touchless activation of door unlock via capacitive sensing and BLE handoff in premium vehicles. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating capacitive, temperature, and battery voltage data; manages low-duty-cycle wake scheduling. Use Value: 400 nA Halt mode extends coin-cell battery life beyond 5 years; dual comparators enable fast analog threshold detection without ADC overhead. |
| Automotive Instrument Cluster | Engine Bay Telematics Node |
Use Scenario: Driving display with segmented LCD, warning indicators, and CAN/LIN gateway functionality. IC Role / Device Role / Timing Role: LCD controller + real-time gauge rendering engine; interfaces with CAN via external transceiver and LIN via USART. Use Value: Integrated 8×40 LCD driver with step-up converter eliminates external charge pump; 96-bit UID enables unique device identification for OTA update authentication. |
Use Scenario: Under-hood environmental monitor logging temperature, humidity, and vibration for predictive maintenance. IC Role / Device Role / Timing Role: Data logger with RTC timestamping, ADC sampling of analog sensors, and SPI flash storage interface. Use Value: 12-bit ADC with internal reference and temp sensor delivers calibrated measurements across -40 °C to +125 °C without external components. |
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 |
|---|---|---|---|
| STM8AL3L88TCX | Includes LCD controller with 4×44 segment support; identical Flash/RAM/peripherals but adds LCD bias generation circuitry. | Required when driving multiplexed automotive LCDs; not suitable if LCD is absent or driven externally. | Select STM8AL3L88TCX only when integrated LCD driver is needed; otherwise STM8AL3188TCX offers lower cost and same core functionality. |
| RL78/F13-GB | Renesas RL78 core; 16-bit architecture; 64 KB Flash; 1.6 µA STOP mode; supports CAN FD but lacks integrated RTC calibration. | Better suited for CAN-centric nodes; requires external RTC or software compensation for high-accuracy timekeeping. | Choose RL78/F13-GB when CAN FD integration or higher code efficiency is prioritized over ultra-low RTC power and calibration precision. |
Compared with STM8AL3L88TCX, the STM8AL3188TCX removes LCD hardware to reduce cost and power in non-display applications; versus RL78/F13-GB, it delivers superior RTC accuracy (±0.5 ppm vs. uncalibrated) and lower Halt-mode current (400 nA vs. 1.6 µA), making it optimal for battery-constrained, time-sensitive automotive endpoints.
Availability
STM8AL3188TCX is available at Aetrix Electronics and suitable for automotive body control modules, smart access systems, instrument clusters, and engine bay telemetry nodes requiring stable component supply across extended product lifecycles.
Supply support for STM8AL3188TCX 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 devices, sensors, and automotive ICs for industrial and transportation markets.
The STM8AL ultra-low-power 8-bit MCU family targets automotive body electronics where extended battery life, AEC-Q100 compliance, and integrated analog peripherals reduce system BOM and board space.
FAQ
What is the maximum operating frequency and core performance of the STM8AL3188TCX?
The STM8AL3188TCX operates at up to 16 MHz with its advanced STM8 8-bit Harvard core, achieving 16 CISC MIPS peak performance. It uses a 3-stage pipeline and supports up to 40 external interrupt sources, enabling deterministic real-time execution in automotive control tasks such as LIN communication and PWM motor sequencing.
How does the RTC achieve ±0.5 ppm accuracy, and is external calibration required?
The RTC achieves ±0.5 ppm accuracy through digital calibration against the 32.768 kHz LSE crystal, using internal trimming registers updated during production. No external calibration is required - the value is stored in option bytes and applied automatically at startup, ensuring long-term stability across temperature and aging without user intervention.
Can the STM8AL3188TCX drive an LCD display, and what are the segment limitations?
No - the STM8AL3188TCX does not include an LCD controller. It belongs to the "318x" variant (non-LCD), unlike the "3L8x" series (e.g., STM8AL3L88TCX) which supports 8×40 or 4×44 segments. This part is intended for applications where LCD is driven externally or not used, reducing cost and power consumption.
What debug interface does the STM8AL3188TCX support, and is JTAG required?
The STM8AL3188TCX uses the SWIM (Single-Wire Interface Module) for programming and non-intrusive debugging - requiring only one dedicated pin (SWIM) and ground. JTAG is not supported or required; SWIM enables full flash read/write, breakpoint setting, and register inspection without halting real-time peripherals during development.
STM8AL3188TCX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM8A
- Packaging:
- Tube
- 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, 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AL3188TCX FAQ
1.How can I place an order for STM8AL3188TCX through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AL3188TCX 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 STM8AL3188TCX reliable?
The price and inventory of STM8AL3188TCX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AL3188TCX is usually 5 days.
3.What payment methods are accepted for STM8AL3188TCX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AL3188TCX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AL3188TCX?
STM8AL3188TCX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AL3188TCX 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 STM8AL3188TCX?
For technical support, including STM8AL3188TCX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AL3188TCX requirements.
6.How does Aetrix verify that STM8AL3188TCX is sourced from the original manufacturer or authorized distributors?
All STM8AL3188TCX 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 STM8AL3188TCX meets industry standards.
7.What is the process for return or replacement of STM8AL3188TCX?
All STM8AL3188TCX units undergo pre-shipment inspection (PSI). If there is an issue with STM8AL3188TCX, 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 STM8AL3188TCX part is unused and in its original packaging.
Return procedure for STM8AL3188TCX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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