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STMicroelectronics STM8AL3L48TAY
- Part No.:
- STM8AL3L48TAY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AL3L48TAY.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,639
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Product details
Overview
STM8AL3L48TAY from STMicroelectronics is an AEC-Q100 qualified automotive-grade 8-bit ultra-low-power MCU featuring 32 Kbyte Flash, 1 Kbyte data EEPROM, 2 Kbyte RAM, integrated LCD controller (4×28 segments), RTC with BCD calendar and alarm, 12-bit ADC (25 channels, up to 1 Mbps), 12-bit DAC with output buffer, two ultra-low-power comparators, and multiple timers including an advanced control timer for motor control. It operates from 1.8 V to 3.6 V across –40 °C to 125 °C and targets battery-powered instrument clusters and body control modules.
For engineers reviewing the STM8AL3L48TAY datasheet, STM8AL3L48TAY pinout, STM8AL3L48TAY application, or STM8AL3L48TAY equivalent, this page delivers verified technical context, low-power mode timing, LCD segment drive capability, RTC auto-wakeup resolution (0.95 ppm), and validated alternative MCUs for automotive body electronics migration paths.
Technical Context
The STM8AL3L48TAY 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 (1–16 MHz HSE and 32 kHz LSE), factory-trimmed 16 MHz RC, and 38 kHz low-consumption RC with clock security system.
Power management includes five low-power modes: low-power run (5.1 μA), low-power wait (3 μA), active-halt with full RTC (1.3 μA), and halt with PDR (400 nA); wakeup from Halt occurs in 4.7 µs. The LCD controller supports up to 4×28 segments with integrated step-up converter and programmable bias generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8 8-bit Harvard, 3-stage pipeline, 16 MIPS peak at 16 MHz |
| Operating Voltage | 1.8 V to 3.6 V (down to 1.65 V in power-down mode) |
| Temperature Range | –40 °C to +125 °C, AEC-Q100 Grade 0 qualified |
| Low-Power Halt Current | 400 nA with PDR enabled, enabling multi-year battery operation |
| LCD Drive Capability | Up to 4 commons × 28 segments with internal step-up converter and bias generation |
| RTC Resolution | 0.95 ppm auto-wakeup timing accuracy with LSE clock source |
| ADC Performance | 12-bit, 25-channel, 1 MSPS sampling rate with internal temp sensor & reference |
| DAC Output | 12-bit buffered DAC on PB4/PB5/PB6 with rail-to-rail output capability |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDDA for analog peripherals, VDD for digital core and I/O |
| NRST | Active-low reset input | Supports ultra-low-power POR/PDR and programmable voltage detector (PVD) |
| OSC_IN/OSC_OUT | HSE crystal oscillator interface | Accepts 1–16 MHz external crystal for precise timing and clock security monitoring |
| LSI/LSE pins | Low-speed oscillator inputs | LSE (32 kHz) drives RTC and auto-wakeup; LSI (38 kHz RC) enables low-power timing |
| COM1–COM4 | LCD common outputs | Drive up to 4 LCD commons with integrated step-up converter and bias generation |
| SEG1–SEG28 | LCD segment outputs | Support multiplexed 4×28 segment display without external bias circuitry |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7 | General-purpose I/O | All 41 pins support interrupt mapping, 50 nA ultra-low leakage per I/O |
| SWIM | Single-wire interface for debug | Enables non-intrusive on-chip programming and real-time debugging |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power RTC with BCD calendar | Enables decade-scale timekeeping and periodic wake-up events at 1.3 μA consumption |
| Integrated LCD controller with step-up converter | Eliminates external charge pump and bias generator for automotive segment displays |
| Two rail-to-rail ultra-low-power comparators | One comparator has fixed threshold; both support wakeup from all low-power modes |
| Advanced control timer (TIM1) | Three-channel 16-bit timer with complementary outputs and dead-time insertion for BLDC motor control |
| Memory retention | Flash data retention >20 years at 55 °C; EEPROM endurance >300 kcycles |
| Development support | SWIM interface enables fast flash programming and real-time debugging without JTAG overhead |
Applications
| Automotive Instrument Cluster | Body Control Module (BCM) |
|---|---|
Use Scenario: Driving analog gauge needles and segmented LCD displays in dashboard clusters with minimal battery drain during vehicle sleep. IC Role / Device Role / Timing Role: Primary MCU managing LCD segment drive, RTC-based wake scheduling, and CAN/LIN communication coordination. Use Value: 400 nA halt current and 4.7 µs wakeup enable sub-10 µA average system sleep current over 10+ year vehicle lifecycle. | Use Scenario: Controlling door locks, window lifts, mirror adjustment, and interior lighting via PWM and GPIO in 12 V automotive systems. IC Role / Device Role / Timing Role: Central low-power controller interfacing with LIN transceivers, driving high-sink LED indicators, and monitoring switch inputs. Use Value: PA0's high-sink LED driver capability (20 mA) eliminates external drivers; 50 nA I/O leakage prevents parasitic drain on always-on circuits. |
| Smart Rearview Mirror | Tire Pressure Monitoring System (TPMS) Gateway |
Use Scenario: Managing electrochromic dimming control, ambient light sensing, and rear camera video overlay on automotive rearview mirrors. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating I²C light/temperature data, driving LCD overlays, and synchronizing with vehicle CAN bus timing. Use Value: Integrated 12-bit ADC (25 ch) and temperature sensor enable single-chip analog front-end; 1.3 μA active-halt mode extends battery life in standalone units. | Use Scenario: Aggregating RF data from TPMS sensors and relaying status via LIN or CAN to vehicle ECU with secure firmware updates. IC Role / Device Role / Timing Role: Low-power gateway MCU handling SPI-based RF transceiver control, EEPROM-stored calibration data, and secure bootloader execution. Use Value: 1 Kbyte true data EEPROM provides reliable storage for sensor IDs and pressure history; SWIM debug interface enables field firmware patching without hardware redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AL3L68TAY | Same package and pinout; adds 2 Kbyte RAM (vs. 2 Kbyte) and 32 Kbyte Flash (same), but includes additional DMA channel and enhanced USART features | Required for designs needing memory-to-memory DMA transfers or ISO 7816 smart card interface support | Select when migrating to higher RAM headroom or requiring smart card protocol compliance |
| RL78/F13-GB | Renesas RL78 core; 24 MHz max, 32 Kbyte Flash, 2 Kbyte RAM, but no integrated LCD controller or step-up converter | Suitable for non-LCD automotive nodes where external display driver is acceptable | Choose only if existing RL78 toolchain and ecosystem alignment outweighs loss of integrated LCD functionality |
Compared with STM8AL3L48TAY, STM8AL3L68TAY offers identical footprint with expanded peripheral flexibility, while RL78/F13-GB trades LCD integration for broader Renesas ecosystem access-neither is pin-compatible, and both require PCB layout revision for LCD-dependent designs.
Availability
STM8AL3L48TAY is available at Aetrix Electronics and suitable for automotive instrument clusters, body control modules, smart rearview mirrors, and TPMS gateways requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for STM8AL3L48TAY 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 STM8AL3Lxx product line targets ultra-low-power automotive body electronics, emphasizing extended battery life, AEC-Q100 reliability, and integrated human-machine interface peripherals like LCD controllers and precision RTCs.
FAQ
What is the maximum operating frequency and core architecture of the STM8AL3L48TAY?
The STM8AL3L48TAY features an STM8 8-bit Harvard architecture core with a 3-stage pipeline, achieving a peak performance of 16 CISC MIPS at its maximum operating frequency of 16 MHz. It supports up to 40 external interrupt sources and includes an advanced interrupt controller optimized for deterministic real-time response in automotive environments.
Does the STM8AL3L48TAY support LCD display driving, and what are its capabilities?
Yes, the STM8AL3L48TAY integrates a dedicated LCD controller supporting up to 4 commons × 28 segments. It includes an internal step-up converter and programmable bias generation, eliminating the need for external components. This capability is exclusive to the "L" series (e.g., STM8AL3Lxx) and not present in the non-LCD STM8AL31xx variants.
What low-power modes are available, and what is the lowest achievable current consumption?
The device offers five low-power modes: Wait, low-power Run (5.1 μA), low-power Wait (3 μA), Active-Halt with full RTC (1.3 μA), and Halt with PDR (400 nA). The 400 nA Halt mode-achieved with power-down reset (PDR) enabled-is the lowest operational current, validated across –40 °C to +125 °C and suitable for multi-year battery operation in always-on automotive subsystems.
Is the STM8AL3L48TAY AEC-Q100 qualified, and which grade does it meet?
Yes, the STM8AL3L48TAY is fully AEC-Q100 qualified for Grade 0, specifying operation from –40 °C to +125 °C ambient temperature. This qualification covers stress testing for accelerated environmental, thermal, and lifetime reliability-ensuring suitability for under-hood and dashboard-mounted automotive applications where thermal robustness and long-term stability are critical.
STM8AL3L48TAY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM8A
- Packaging:
- Tray
- Product Status:
- Active
- 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:
- 16KB (16K 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 25x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AL3L48TAY FAQ
1.How can I place an order for STM8AL3L48TAY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AL3L48TAY 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 STM8AL3L48TAY reliable?
The price and inventory of STM8AL3L48TAY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AL3L48TAY is usually 5 days.
3.What payment methods are accepted for STM8AL3L48TAY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AL3L48TAY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AL3L48TAY?
STM8AL3L48TAY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AL3L48TAY 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 STM8AL3L48TAY?
For technical support, including STM8AL3L48TAY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AL3L48TAY requirements.
6.How does Aetrix verify that STM8AL3L48TAY is sourced from the original manufacturer or authorized distributors?
All STM8AL3L48TAY 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 STM8AL3L48TAY meets industry standards.
7.What is the process for return or replacement of STM8AL3L48TAY?
All STM8AL3L48TAY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AL3L48TAY, 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 STM8AL3L48TAY part is unused and in its original packaging.
Return procedure for STM8AL3L48TAY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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