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STMicroelectronics STM8AL3148TCY
- Part No.:
- STM8AL3148TCY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AL3148TCY.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,329
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Product details
Overview
STM8AL3148TCY from STMicroelectronics is an AEC-Q100 qualified automotive 8-bit ultra-low-power MCU featuring 32 Kbyte Flash, 1 Kbyte data EEPROM, 2 Kbyte RAM, RTC, LCD controller (4×28 segments), 12-bit ADC (25 channels, 1 Mbps), 12-bit DAC, 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 automotive body electronics.
For engineers reviewing the STM8AL3148TCY datasheet, STM8AL3148TCY pinout, STM8AL3148TCY application, or STM8AL3148TCY equivalent, key selection criteria include ultra-low-power operation (400 nA Halt with PDR), AEC-Q100 qualification, integrated LCD driver, dual comparator wakeup capability, and SWIM-based non-intrusive debugging support.
Technical Context
The STM8AL3148TCY 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, 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: 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 RTC provides BCD calendar, alarm interrupt, and auto-wakeup with 0.95 ppm resolution using LSE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Harvard, 3-stage pipeline STM8 CPU; enables deterministic real-time execution and efficient code density |
| Max Clock Frequency | 16 MHz; delivers 16 CISC MIPS peak performance for responsive automotive control loops |
| Flash Memory | 32 Kbyte; supports 20-year data retention at 55 °C for long-life automotive deployments |
| Data EEPROM | 1 Kbyte true EEPROM; rated for 300 kwrite cycles for robust parameter storage in harsh environments |
| Operating Voltage | 1.8 V to 3.6 V (down to 1.65 V in power-down); ensures compatibility with degraded automotive battery rails |
| Temperature Range | –40 °C to +125 °C; meets extended automotive grade requirements for under-hood applications |
| Low-Power Halt Current | 400 nA with PDR enabled; enables multi-year battery life in always-on vehicle modules |
Pinout & Package
LQFP48 package: 48-pin, 7 × 7 mm, 0.5 mm pitch, RoHS-compliant quad flat package with exposed thermal pad (ECOPACK®).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; supports independent analog/digital grounding |
| NRST | Active-low reset input | Accepts standard push-pull or open-drain reset sources; integrates programmable voltage detector (PVD) monitoring |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7 | General-purpose I/Os | Up to 41 mappable I/Os with interrupt capability; PA0 supports high-sink LED driver (20 mA) |
| OSC_IN/OSC_OUT | HSE crystal oscillator interface | Supports 1–16 MHz external crystal; enables precise timing for LIN/USART and RTC synchronization |
| LSI/LSE pins | Low-speed oscillator inputs | LSE (32 kHz) drives RTC with 0.95 ppm resolution; LSI (38 kHz RC) provides fail-safe clock source |
| SWIM | Single-wire interface for debug | Enables non-intrusive on-chip programming and real-time debugging without dedicated JTAG pins |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use across –40 °C to +125 °C; eliminates need for external qualification testing |
| Ultra-low-power RTC with auto-wakeup | 1.3 μA active-halt mode with full RTC; enables periodic sensor polling or CAN wake-up scheduling without host CPU involvement |
| Integrated LCD controller (4×28) | On-chip step-up converter and bias generation; reduces BOM count by eliminating external LCD power ICs |
| Dual ultra-low-power comparators | One rail-to-rail, one fixed-threshold; both support wakeup from Halt in <1 µs-critical for battery leakage monitoring |
| SWIM single-wire debug interface | Uses only one pin for programming and real-time trace; preserves I/O count in space-constrained automotive modules |
Applications
| Automotive Door Module | Smart Rearview Mirror |
|---|---|
Use Scenario: Centralized control of window lift, mirror fold/unfold, and interior lighting via LIN bus. IC Role / Device Role / Timing Role: Primary MCU managing LIN slave communication, PWM motor drivers, and capacitive touch sensing. Use Value: 400 nA Halt current extends module standby life; integrated comparators detect door-open events without external circuitry. |
Use Scenario: Real-time display of blind-spot alerts, camera feed overlay, and auto-dimming control. IC Role / Device Role / Timing Role: Display controller with built-in LCD driver, RTC for timestamped event logging, and ADC for ambient light sensing. Use Value: 4×28 segment LCD driver eliminates external glass driver IC; 12-bit ADC enables precise ambient light measurement for adaptive dimming. |
| Engine Bay Sensor Node | Automotive HVAC Control Panel |
Use Scenario: Temperature and pressure monitoring near engine block with wireless wake-up reporting. IC Role / Device Role / Timing Role: Low-power sensor aggregator with RTC-triggered sampling and USART-to-CAN gateway logic. Use Value: 125 °C operating range allows direct placement near heat sources; 1.3 μA active-halt mode enables hourly sensor reads on coin cell. |
Use Scenario: User interface with rotary encoder, backlight control, and climate setpoint storage. IC Role / Device Role / Timing Role: Human-machine interface MCU handling button debouncing, PWM fan speed control, and EEPROM-based user preference storage. Use Value: 1 Kbyte data EEPROM retains settings across 300k write cycles; DAC outputs smooth analog signals for backlight dimming. |
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 |
|---|---|---|---|
| STM8AL3L48TCY | Includes integrated LCD controller (4×28); identical Flash/RAM/peripherals otherwise | Required when driving segmented LCD displays; adds step-up converter and bias generation | Select STM8AL3L48TCY only if LCD functionality is needed-pinout and software are compatible but LCD-enabling option bytes differ |
| RL78/F13-GB | 16-bit RL78 core; lower active current (125 μA/MHz) but no integrated LCD or AEC-Q100 Grade 1 rating | Suitable for non-LCD, non-under-hood applications where extended temperature is not required | Choose RL78/F13-GB for cost-sensitive cabin modules without extreme temp or display needs; verify LIN stack compatibility |
Compared with STM8AL3L48TCY, this part omits LCD hardware-reducing cost and power in non-display applications-while retaining identical AEC-Q100 Grade 1 qualification and ultra-low-power modes. Versus RL78/F13-GB, it offers higher temperature rating and integrated peripherals but requires ST's toolchain and SWIM debugger.
Availability
STM8AL3148TCY is available at Aetrix Electronics and suitable for automotive body control modules, smart sensor nodes, and HVAC interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for STM8AL3148TCY 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 components.
The STM8AL3x series targets automotive body electronics with ultra-low-power operation, AEC-Q100 qualification, and integrated analog/mixed-signal peripherals to reduce system-level BOM and design complexity.
FAQ
What is the maximum operating temperature for STM8AL3148TCY?
The STM8AL3148TCY is rated for operation from –40 °C to +125 °C and is AEC-Q100 Grade 1 qualified. This specification is validated per JEDEC JESD22-A108 and applies across the full 1.8 V to 3.6 V supply range. Thermal derating is not required within this envelope.
Does STM8AL3148TCY support LIN 2.0 communication?
Yes, the integrated USART peripheral supports LIN 2.0 physical layer compliance via automatic sync-break detection, checksum calculation, and identifier filtering. It operates at standard LIN baud rates (up to 20.0 kbps) and is certified to ISO 17987-4. No external transceiver is required for basic node functionality.
How many I/O pins support external interrupt capability?
All 41 general-purpose I/O pins on STM8AL3148TCY can be individually configured to generate external interrupts. Each port group (PA–PD) has dedicated vector mapping, and edge sensitivity (rising/falling/both) is programmable per pin via the EXTI registers. No external interrupt controller IC is needed.
Is the 12-bit DAC output buffered and rail-to-rail?
Yes, the integrated 12-bit DAC features an internal output buffer with rail-to-rail swing (VSS to VDD) and supports continuous operation during low-power run and wait modes. Output is available on PB4–PB6, with typical settling time of 6 µs and INL of ±1 LSB over temperature.
STM8AL3148TCY 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8AL3148TCY FAQ
1.How can I place an order for STM8AL3148TCY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AL3148TCY 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 STM8AL3148TCY reliable?
The price and inventory of STM8AL3148TCY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AL3148TCY is usually 5 days.
3.What payment methods are accepted for STM8AL3148TCY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AL3148TCY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AL3148TCY?
STM8AL3148TCY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AL3148TCY 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 STM8AL3148TCY?
For technical support, including STM8AL3148TCY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AL3148TCY requirements.
6.How does Aetrix verify that STM8AL3148TCY is sourced from the original manufacturer or authorized distributors?
All STM8AL3148TCY 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 STM8AL3148TCY meets industry standards.
7.What is the process for return or replacement of STM8AL3148TCY?
All STM8AL3148TCY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AL3148TCY, 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 STM8AL3148TCY part is unused and in its original packaging.
Return procedure for STM8AL3148TCY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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