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STMicroelectronics STM8AL3L88TCX
- Part No.:
- STM8AL3L88TCX
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AL3L88TCX.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,995
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Product details
Overview
STM8AL3L88TCX from STMicroelectronics is an AEC-Q100 Grade 1 qualified automotive 8-bit ultra-low-power microcontroller featuring 64 Kbytes Flash, 4 Kbytes RAM, 2 Kbytes data EEPROM with ECC and RWW, 12-bit ADC (1 Msps, 28 channels), dual 12-bit DACs, LCD controller (8×40/4×44), RTC with ±0.5 ppm digital calibration, and five low-power modes down to 400 nA in Halt. It targets battery-powered automotive body electronics such as smart sensors and dashboard displays.
For engineers reviewing the STM8AL3L88TCX datasheet, STM8AL3L88TCX pinout, STM8AL3L88TCX application, or STM8AL3L88TCX equivalent, key selection criteria include ultra-low static current (1.4 µA in Active-Halt with RTC), automotive-grade temperature range (−40 to 125 °C), integrated LCD step-up converter, dual DAC output buffering, and SWIM-based non-intrusive debugging support.
Technical Context
The STM8AL3L88TCX implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. Its clock system integrates three oscillators: 1–16 MHz HSE, 32 kHz LSE, and factory-trimmed 16 MHz HSI and 38 kHz LSI, all managed by a clock security system with failover detection.
Power management includes five configurable low-power modes, programmable BOR with five thresholds, PVD, and ultra-low I/O leakage (50 nA per pin). The RTC operates independently in Active-Halt mode using the LSE crystal, enabling calendar functions with tamper detection and digital calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8 8-bit Harvard, 3-stage pipeline, 16 MIPS peak at 16 MHz - enables deterministic real-time control with minimal code footprint. |
| Flash / EEPROM / RAM | 64 Kbytes Flash with RWW and ECC; 2 Kbytes data EEPROM with ECC; 4 Kbytes RAM - supports robust firmware updates and persistent parameter storage in harsh environments. |
| ADC / DAC | 12-bit ADC up to 1 Msps, 28 channels including temp sensor and Vref; dual 12-bit DACs with output buffers - enables high-fidelity analog sensing and precision actuator control. |
| Low-Power Consumption | Halt mode: 400 nA; Active-Halt with RTC: 1.4 µA; Low-power Wait: 3 µA - extends battery life in always-on automotive modules like door modules or tire pressure monitors. |
| LCD Controller | Supports 8×40 or 4×44 segments with integrated step-up converter - eliminates external boost IC for automotive instrument cluster displays. |
| Operating Range | AEC-Q100 Grade 1 (−40 to +125 °C), 1.65–3.6 V supply - certified for under-hood and cabin applications without derating. |
| Peripherals | 3× USART (LIN 2.0/IrDA), 2× SPI, I²C (400 kHz SMBus/PMBus), 3× 16-bit timers, advanced TIM1 for motor control, 2× comparators, DMA (5 channels) - covers full body-control peripheral set. |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), thermally enhanced for automotive ambient operation. Pin count and function mapping align with STM8AL3L88 variant supporting LCD segment drive.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDDA for analog peripherals (ADC/DAC/RTC), VDD for digital core - ensures noise isolation critical for 12-bit precision. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7, PG0–PG7 | General-purpose I/O with interrupt capability | All 67 I/Os mappable to interrupt vectors; each supports 50 nA ultra-low leakage - ideal for wake-on-event in sleep-mode systems. |
| OSC_IN / OSC_OUT | HSE crystal oscillator interface | Supports 1–16 MHz external crystal; paired with LSE (32.768 kHz) for independent RTC clocking - enables accurate timekeeping during main CPU halt. |
| SWIM | Single-wire interface module | Non-intrusive debugging and programming via single pin - reduces debug footprint and preserves I/O count in space-constrained automotive PCBs. |
| VLCD | LCD voltage supply output | Integrated step-up converter generates regulated VLCD from VDD - eliminates need for external charge pump in LCD-based dashboards. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power RTC | ±0.5 ppm accuracy with digital calibration and anti-tamper detection - meets automotive telematics timestamping and alarm scheduling requirements. |
| Dual 12-bit DACs | Simultaneous buffered outputs on PB4–PB5–PB6 - enables synchronized analog waveform generation for HVAC actuators or LED dimming control. |
| Automotive-grade memory | 64 KB Flash with ECC, 2 KB data EEPROM with RWW and ECC - ensures firmware integrity and reliable parameter retention over 20+ year vehicle lifetimes. |
| Flexible low-power modes | 5 distinct modes including Active-Halt (1.4 µA with RTC active) and Halt (400 nA) with 4.7 µs wake-up - balances responsiveness and energy budget in battery-supplied ECUs. |
| LIN 2.0-compliant USART | Hardware LIN break detection, sync field handling, and checksum generation - simplifies compliance with automotive body network standards without software overhead. |
Applications
| Automotive Instrument Cluster | Smart Door Module |
|---|---|
|
Use Scenario: Driving display with analog gauges, warning indicators, and segmented LCD readouts. IC Role / Device Role / Timing Role: Primary MCU managing LCD segment drive, CAN/LIN gateway logic, and real-time gauge rendering via TIM1 PWM and DAC outputs. Use Value: Integrated LCD step-up converter and 8×40 segment support eliminate external boost ICs; 125 °C rating ensures reliability behind glass dashboards. |
Use Scenario: Centralized door ECU controlling window lift, mirror fold, lock actuation, and proximity sensing. IC Role / Device Role / Timing Role: System controller interfacing with LIN slaves (mirror, latch), reading Hall sensors, and driving DC motors via TIM1 complementary PWM. Use Value: Dual DACs generate precise reference voltages for current-sense amplifiers; ultra-low Halt current (<500 nA) extends 12 V battery standby life. |
| Tire Pressure Monitoring System (TPMS) Sensor Node | Engine Bay Ambient Sensor Hub |
|
Use Scenario: Battery-powered wheel-integrated sensor transmitting pressure, temperature, and acceleration via RF link. IC Role / Device Role / Timing Role: Data acquisition MCU sampling piezoresistive pressure sensor and internal temp sensor via 12-bit ADC, then formatting telemetry for transmission. Use Value: 1.4 µA Active-Halt mode with RTC allows scheduled wake-ups every 30 s; 28-channel ADC supports multi-sensor fusion without external MUX. |
Use Scenario: Under-hood environmental monitor measuring coolant temp, intake air temp, and humidity near engine control unit. IC Role / Device Role / Timing Role: Analog front-end controller acquiring sensor signals, performing linearization via lookup tables in Flash, and communicating results over LIN. Use Value: −40 to +125 °C operating range and 1.65 V minimum supply enable direct mounting near heat sources; internal Vref and temp sensor reduce BOM cost. |
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 |
|---|---|---|---|
| STM8AL3L68TCX | 48 Kbytes Flash, 2 Kbytes RAM, no LCD controller, same peripheral set and low-power profile | Lacks integrated LCD driver and step-up converter; suitable for non-display body ECUs | Select when display functionality is unnecessary and Flash/RAM headroom is sufficient for application code size. |
| RL78/F13 | Renesas 16-bit RL78 core, 128 Kbytes Flash, 10 Kbytes RAM, 1.6–5.5 V operation, 290 nA Halt mode | Higher code density and larger memory, but lacks automotive LCD integration and requires external boost for segment displays | Prefer for complex control algorithms requiring >64 KB code space or wider supply tolerance, accepting added BOM complexity for display. |
Compared with STM8AL3L68TCX, the STM8AL3L88TCX adds 16 KB Flash, LCD controller, and step-up converter-critical for instrument clusters. Versus RL78/F13, it trades 16-bit performance for lower system cost and seamless automotive LCD integration.
Availability
STM8AL3L88TCX is available at Aetrix Electronics and suitable for automotive body electronics, instrument cluster displays, and battery-powered sensor nodes requiring stable component supply across extended temperature and long product lifecycles.
Supply support for STM8AL3L88TCX 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 MCU family targets automotive body electronics where extended battery life, AEC-Q100 compliance, and integrated analog peripherals-including LCD drivers and calibrated RTC-are essential design requirements.
FAQ
What is the maximum operating frequency and core performance of the STM8AL3L88TCX?
The STM8AL3L88TCX runs at up to 16 MHz with its STM8 8-bit Harvard core, achieving 16 CISC MIPS peak performance. Its 3-stage pipeline and optimized instruction set deliver deterministic timing for real-time automotive tasks such as LIN frame processing and PWM generation without jitter.
Does the STM8AL3L88TCX support true hardware LIN 2.0 communication?
Yes - it includes three USARTs with dedicated LIN 2.0 features: automatic break detection, sync field handling, PID checksum calculation, and wakeup-on-break. These are implemented in hardware, eliminating CPU overhead and ensuring protocol compliance without software bit-banging.
How does the LCD controller operate without an external boost converter?
The STM8AL3L88TCX integrates a programmable step-up converter that generates VLCD from the main VDD supply (1.65–3.6 V), supporting up to 8×40 or 4×44 segments. This eliminates external charge-pump ICs and reduces PCB area and BOM cost in automotive display modules.
What is the lowest achievable current consumption in Halt mode, and what peripherals remain active?
In Halt mode, the STM8AL3L88TCX consumes just 400 nA at 25 °C and 1.8 V. Only the reset circuit and ultra-low-leakage I/Os remain powered; all clocks, memories, and peripherals are disabled. RTC operation requires Active-Halt mode (1.4 µA), where LSE continues running to maintain calendar time.
STM8AL3L88TCX 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:
STM8AL3L88TCX FAQ
1.How can I place an order for STM8AL3L88TCX through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AL3L88TCX 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 STM8AL3L88TCX reliable?
The price and inventory of STM8AL3L88TCX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AL3L88TCX is usually 5 days.
3.What payment methods are accepted for STM8AL3L88TCX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AL3L88TCX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AL3L88TCX?
STM8AL3L88TCX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AL3L88TCX 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 STM8AL3L88TCX?
For technical support, including STM8AL3L88TCX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AL3L88TCX requirements.
6.How does Aetrix verify that STM8AL3L88TCX is sourced from the original manufacturer or authorized distributors?
All STM8AL3L88TCX 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 STM8AL3L88TCX meets industry standards.
7.What is the process for return or replacement of STM8AL3L88TCX?
All STM8AL3L88TCX units undergo pre-shipment inspection (PSI). If there is an issue with STM8AL3L88TCX, 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 STM8AL3L88TCX part is unused and in its original packaging.
Return procedure for STM8AL3L88TCX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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