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STMicroelectronics STM8AL3L88TCY
- Part No.:
- STM8AL3L88TCY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AL3L88TCY.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,807
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Product details
Overview
STM8AL3L88TCY 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, LCD controller (4×44/8×40), and two ultra-low-power comparators. It operates from 1.65 V to 3.6 V across –40 °C to 125 °C and targets battery-powered automotive body electronics requiring long-term reliability and sub-µA sleep modes.
For engineers reviewing the STM8AL3L88TCY datasheet, STM8AL3L88TCY pinout, STM8AL3L88TCY application, or STM8AL3L88TCY equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, Active-halt mode current of 1.4 µA with full RTC, 47 µs wake-up time from Halt, 67 GPIOs with interrupt mapping, and integrated LCD step-up converter for direct segment driving in instrument clusters and control panels.
Technical Context
The STM8AL3L88TCY implements a Harvard-architecture STM8 core with 3-stage pipeline, delivering 16 CISC MIPS at 16 MHz. Its clock system integrates three oscillators: 32 kHz LSE for RTC, 1–16 MHz HSE, and factory-trimmed 16 MHz HSI with 1% accuracy over temperature and voltage.
Power management includes five low-power modes-Wait, Low-power Run (5.9 µA), Low-power Wait (3 µA), Active-halt (1.4 µA with RTC), and Halt (400 nA)-with fast wake-up (4.7 µs) and per-I/O leakage as low as 50 nA. The RTC supports BCD calendar, alarm, anti-tamper detection, and digital calibration.
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 automotive functions. |
| Flash / EEPROM | 64 Kbytes Flash with ECC and Read-While-Write; 2 Kbytes data EEPROM with ECC-supports robust firmware updates and parameter storage in harsh environments. |
| ADC | 12-bit, 1 Msps SAR ADC with 28 input channels, internal reference, and temperature sensor-enables high-accuracy analog monitoring without external components. |
| DAC | Dual 12-bit DACs with output buffers; supports simultaneous analog output generation for sensor biasing or actuator control in body control modules. |
| RTC Accuracy | ±0.5 ppm digital calibration with 32 kHz crystal; ensures <1 second/month drift for time-stamped logging and scheduled wake-up in telematics units. |
| Low-Power Halt Current | 400 nA at 1.65–3.6 V; allows multi-year operation on coin-cell batteries in always-on vehicle access systems. |
| LCD Driver | Supports 8×40 or 4×44 segments with integrated step-up converter; eliminates external boost IC for automotive dashboard displays. |
Pinout & Package
LQFP80 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, with 67 user I/Os, dedicated LCD segment/common pins, and power/ground distribution optimized for EMI resilience in automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O domain operation under load transients; supports 1.65–3.6 V wide-range battery input. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7, PG0–PG7, PH0–PH7 | General-purpose I/Os | All 67 GPIOs support interrupt vector mapping and ultra-low leakage (50 nA); enable flexible peripheral routing and wake-up from any pin in Halt mode. |
| OSC_IN / OSC_OUT | HSE crystal oscillator interface | Supports 1–16 MHz external crystal; used for precise timing in LIN/USART communication and motor control loops. |
| LSE_IN / LSE_OUT | RTC crystal oscillator interface | 32.768 kHz crystal connection for autonomous RTC operation during Halt; critical for timestamped diagnostics and periodic wake-up. |
| VLCD | LCD step-up converter output | Integrated charge-pump output (up to 5.5 V) drives LCD segments directly-reduces BOM count and layout area in instrument clusters. |
| SWIM | Single-wire debug interface | Enables non-intrusive programming and real-time debugging via one pin; essential for in-vehicle firmware updates and validation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for operation from –40 °C to +125 °C with full electrical characterization-meets automotive powertrain and body electronics requirements. |
| Active-halt mode (1.4 µA) | RTC remains fully functional while CPU and peripherals are powered down-enables accurate timekeeping and alarm-triggered wake-up in parking-mode systems. |
| Dual 12-bit DACs with buffer | Simultaneous analog outputs drive sensors or actuators without external op-amps; supports closed-loop control in HVAC and lighting modules. |
| Ultra-low-power comparators | Two independent comparators-one rail-to-rail, one with fixed threshold-provide fast wake-up (<1 µs) and analog event detection with <100 nA quiescent current. |
| Flexible memory protection | Programmable read/write protection zones for Flash and EEPROM-prevents unauthorized firmware modification in OTA update scenarios. |
Applications
| Automotive Instrument Cluster | Body Control Module (BCM) |
|---|---|
Use Scenario: Driving analog gauges, LED backlighting, and segmented LCD display in vehicle dashboards. IC Role / Device Role / Timing Role: Primary MCU managing LCD segment driving, PWM-controlled backlight dimming, and CAN/LIN gateway timing synchronization. Use Value: Integrated LCD step-up converter and 4×44 segment support eliminate external boost ICs; 125 °C rating ensures reliability behind glass dashboards. |
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and interior lighting. IC Role / Device Role / Timing Role: Real-time coordinator of multiple LIN slaves and discrete I/Os; uses RTC for scheduled diagnostics and low-power wake-up on key fob RF events. Use Value: 400 nA Halt mode extends battery life during vehicle standby; 67 GPIOs simplify wiring harness integration without external I/O expanders. |
| Telematics Control Unit (TCU) | Automotive HVAC Controller |
Use Scenario: Time-stamped GPS logging, cellular modem handshaking, and firmware integrity checks during ignition-off periods. IC Role / Device Role / Timing Role: Secure timekeeper and watchdog supervisor; RTC maintains accurate timestamps while main processor sleeps. Use Value: ±0.5 ppm RTC accuracy ensures <1 s/month drift for regulatory compliance reporting; ECC Flash prevents bit-flip corruption in over-the-air updates. |
Use Scenario: Sensor fusion (NTC, humidity, ambient light), fan speed control, and display interface in climate control panels. IC Role / Device Role / Timing Role: Analog front-end manager with 28-channel ADC, dual DACs for valve positioning, and 12-bit precision temperature sensing. Use Value: On-chip temp sensor and internal reference reduce external component count; 1 Msps ADC captures rapid thermal transients during compressor cycling. |
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 |
|---|---|---|---|
| STM8AL3L68TCY | 48 Kbytes Flash, 2 Kbytes RAM, no LCD controller, 52 GPIOs | Suitable for cost-sensitive BCMs without display requirements | Select when LCD functionality is unnecessary and Flash footprint is ≤48 KB. |
| RL78/F13-GB | Renesas RL78 core, 32 Kbytes Flash, 2.7–5.5 V operation, no AEC-Q100 Grade 1 rating | Targeted at industrial-grade automotive accessories, not powertrain or safety-critical zones | Choose only for non-Grade 1 applications where wider VDD range offsets lower integration. |
Compared with STM8AL3L68TCY, the STM8AL3L88TCY adds 16 Kbytes Flash, LCD support, and 15 extra GPIOs-justifying its use in display-integrated modules. Versus RL78/F13-GB, it provides certified automotive qualification, tighter voltage tolerance, and superior low-power metrics for battery-backed systems.
Availability
STM8AL3L88TCY is available at Aetrix Electronics and suitable for automotive instrument clusters, body control modules, telematics units, and HVAC controllers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for STM8AL3L88TCY 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 analog ICs for automotive, industrial, and consumer markets.
The STM8AL3L8x series belongs to ST's automotive ultra-low-power 8-bit MCU family, engineered specifically for battery-operated vehicle subsystems demanding AEC-Q100 qualification, sub-microamp sleep currents, and integrated analog peripherals to minimize external component count.
FAQ
What is the maximum operating temperature for STM8AL3L88TCY?
The STM8AL3L88TCY is AEC-Q100 Grade 1 qualified and specified for continuous operation from –40 °C to +125 °C. This rating is validated across all electrical parameters including Flash endurance, ADC linearity, and RTC accuracy, making it suitable for under-hood and dashboard-mounted automotive applications.
Does STM8AL3L88TCY support in-circuit debugging?
Yes, STM8AL3L88TCY supports non-intrusive single-wire interface module (SWIM) debugging using one dedicated pin. SWIM enables full-speed execution halting, register inspection, Flash programming, and real-time variable monitoring without requiring additional debug hardware or pins beyond the standard SWIM/VDD/VSS connections.
How many ADC channels does STM8AL3L88TCY have, and what is their resolution?
The STM8AL3L88TCY integrates a single 12-bit successive approximation register (SAR) ADC with up to 28 input channels. It achieves 1 Msps sampling rate with built-in temperature sensor, internal reference voltage, and programmable sampling time-enabling high-fidelity analog signal acquisition for sensor monitoring in automotive ECUs.
Is the LCD controller capable of driving both segment and common lines?
Yes, the integrated LCD controller supports up to 8 commons and 40 segments (8×40) or 4 commons and 44 segments (4×44), with programmable bias and frame frequency. It includes an on-chip step-up converter generating VLCD up to 5.5 V, allowing direct driving of multiplexed LCDs without external voltage boost circuitry in automotive instrument clusters.
STM8AL3L88TCY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-LQFP
- Series:
- STM8A
- Packaging:
- Tray
- 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, LCD, 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:
STM8AL3L88TCY FAQ
1.How can I place an order for STM8AL3L88TCY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AL3L88TCY 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 STM8AL3L88TCY reliable?
The price and inventory of STM8AL3L88TCY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AL3L88TCY is usually 5 days.
3.What payment methods are accepted for STM8AL3L88TCY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AL3L88TCY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AL3L88TCY?
STM8AL3L88TCY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AL3L88TCY 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 STM8AL3L88TCY?
For technical support, including STM8AL3L88TCY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AL3L88TCY requirements.
6.How does Aetrix verify that STM8AL3L88TCY is sourced from the original manufacturer or authorized distributors?
All STM8AL3L88TCY 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 STM8AL3L88TCY meets industry standards.
7.What is the process for return or replacement of STM8AL3L88TCY?
All STM8AL3L88TCY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AL3L88TCY, 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 STM8AL3L88TCY part is unused and in its original packaging.
Return procedure for STM8AL3L88TCY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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