My Inquiry
My Account
STMicroelectronics STM8AL3L48TCY
- Part No.:
- STM8AL3L48TCY
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM8AL3L48TCY.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,697
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM8AL3L48TCY from STMicroelectronics is an AEC-Q100 qualified automotive 8-bit ultra-low-power microcontroller featuring 32 Kbyte Flash, 1 Kbyte data EEPROM, 2 Kbyte RAM, integrated LCD controller (up to 4×28 segments), 12-bit ADC (25 channels, up to 1 Mbps), 12-bit DAC with output buffer, two ultra-low-power comparators, RTC with BCD calendar and auto-wakeup, and multiple low-power modes including 400 nA Halt with PDR - deployed in automotive instrument clusters and body control modules.
For engineers reviewing the STM8AL3L48TCY datasheet, STM8AL3L48TCY pinout, STM8AL3L48TCY application, or STM8AL3L48TCY equivalent, this page delivers verified technical context, validated pin functions, real-world automotive use cases, and confirmed alternative options for low-power, LCD-equipped MCU selection.
Technical Context
The STM8AL3L48TCY 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: Wait (typ. 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 integrated LCD controller supports step-up converter and direct drive of 4×28 segments without external bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Harvard, 3-stage pipeline STM8 CPU; enables deterministic timing and efficient code execution in safety-critical automotive firmware. |
| Max Operating Frequency | 16 MHz; delivers 16 CISC MIPS peak performance while maintaining ultra-low power consumption in run mode. |
| Flash / EEPROM / RAM | 32 Kbyte Flash (20-yr retention at 55 °C), 1 Kbyte true data EEPROM (300 kcycle endurance), 2 Kbyte RAM - supports robust firmware updates and parameter storage. |
| Low-Power Halt Current | 400 nA with PDR enabled; enables multi-year battery-backed operation in always-on automotive subsystems. |
| LCD Drive Capability | Up to 4×28 segments with integrated step-up converter; eliminates external LCD bias circuitry and reduces BOM count. |
| ADC/DAC Resolution | 12-bit ADC (25-channel, 1 Mbps sampling) and 12-bit DAC with output buffer; supports high-fidelity sensor signal acquisition and analog actuator control. |
| RTC Accuracy | 0.95 ppm resolution with auto-wakeup from Halt; provides precise timekeeping for periodic wake events in energy-constrained systems. |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK2 certified. Pin count and I/O mapping optimized for automotive LCD interface and mixed-signal peripheral integration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 1.65–3.6 V supply rails; supports wide-range automotive battery operation and low-voltage sleep states. |
| NRST | Reset input | Active-low reset with programmable voltage detector (PVD) and BOR thresholds; ensures safe startup under brownout conditions. |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7 | General-purpose I/O | 41 mappable I/Os with interrupt capability; all support ultra-low leakage (50 nA per I/O) in Halt mode. |
| OSC_IN / OSC_OUT | HSE crystal oscillator interface | Supports 1–16 MHz external crystal; used for precise timing in communication interfaces and RTC reference. |
| LSI_IN / LSI_OUT | LSE crystal oscillator interface | 32 kHz crystal connection for RTC; enables sub-μA real-time calendar operation during deep sleep. |
| VLCD | LCD voltage supply | Output of internal step-up converter; powers LCD segment/backplane lines directly without external charge pump. |
| SEG0–SEG31, COM0–COM3 | LCD segment and common outputs | Drives up to 4×28 segments; configurable for static, 2-, 3-, or 4-mux LCD displays in automotive dashboards. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualification | Qualified for automotive Grade 2 (−40 °C to +105 °C) and Grade 3 (−40 °C to +125 °C) operation - meets OEM reliability requirements. |
| SWIM debug interface | Single-wire on-chip programming and non-intrusive debugging; enables field firmware updates without JTAG header footprint. |
| DMA controller | Four-channel DMA supporting ADC, DAC, SPI, I2C, USART, and timers; offloads CPU during high-throughput peripheral transfers. |
| Ultra-low-power comparators | Two rail-to-rail comparators - one with fixed threshold, one with programmable hysteresis - both capable of waking CPU from Halt mode. |
| Advanced timer suite | Includes TIM1 (16-bit advanced control timer with motor control features), two 16-bit general-purpose timers, and beeper timer (1/2/4 kHz); supports complex timing and PWM generation. |
Applications
| Automotive Instrument Cluster | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Driving digital speedometer, fuel gauge, and warning indicators with segmented LCD display. IC Role / Device Role / Timing Role: Primary MCU managing LCD refresh, CAN/LIN message parsing, sensor ADC sampling, and real-time beeper alerts. Use Value: Integrated LCD driver and 400 nA Halt mode enable zero-power display retention during ignition-off, extending battery life. |
Use Scenario: Controlling door locks, window lifts, mirror adjustment, and interior lighting via discrete drivers and PWM dimming. IC Role / Device Role / Timing Role: Central low-power controller interfacing with LIN bus, reading switch inputs, driving relays/LEDs, and monitoring battery voltage. Use Value: Five low-power modes and 41 interrupt-capable I/Os allow responsive event handling while sustaining <3 μA in low-power wait during vehicle standby. |
| Automotive HVAC Display | Tire Pressure Monitoring System (TPMS) Gateway |
|
Use Scenario: Managing 4×28-segment LCD showing temperature, fan speed, air mode, and climate icons in cabin HVAC units. IC Role / Device Role / Timing Role: Dedicated display controller with integrated step-up converter, RTC-based scheduling, and local sensor interface (temp, humidity). Use Value: Eliminates external LCD bias IC and reduces PCB area by 30% compared to discrete solutions using generic MCUs. |
Use Scenario: Aggregating TPMS sensor data over RF link and forwarding via LIN/CAN to dashboard cluster. IC Role / Device Role / Timing Role: Low-power gateway MCU with UART/I2C for sensor comms, SPI for RF transceiver, and RTC-triggered periodic wakeups. Use Value: 1.3 μA active-halt with RTC allows scheduled 30-second wake cycles for sensor polling, achieving >5-year battery life on coin cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power automotive MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8AL3L68TCY | Same package and core, but with 64 Kbyte Flash and 2 Kbyte EEPROM - no change in LCD, ADC, or low-power specs. | Required where larger firmware image size or extended data logging capacity is needed beyond 32 Kbyte Flash. | Select when future firmware expansion or OTA update resilience demands additional program memory headroom. |
| RL78/F13-GB | Renesas RL78 core (16-bit), 32 Kbyte Flash, 2 Kbyte RAM, but no integrated LCD controller; requires external bias for segment LCD. | Suitable for non-LCD automotive nodes needing higher computational throughput and CAN FD support, not LCD-centric designs. | Choose only if migrating to 16-bit architecture is justified and LCD integration can be handled externally or omitted. |
Compared with STM8AL3L48TCY, STM8AL3L68TCY offers scalable memory without altering power or display capabilities, while RL78/F13-GB trades integrated LCD for broader communication options and higher processing bandwidth - making the STM8AL3L48TCY optimal for cost-sensitive, LCD-dominant automotive UIs.
Availability
STM8AL3L48TCY is available at Aetrix Electronics and suitable for automotive instrument clusters, body control modules, and HVAC display systems requiring stable component supply across extended production lifecycles.
Supply support for STM8AL3L48TCY 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 automotive markets.
The STM8AL3Lxx series targets automotive body electronics and instrument panels, emphasizing ultra-low-power operation, AEC-Q100 compliance, and integrated LCD control to reduce system-level complexity and cost.
FAQ
What is the maximum operating temperature range for STM8AL3L48TCY?
The STM8AL3L48TCY is qualified for operation from −40 °C to +125 °C (Grade 3), meeting stringent automotive under-hood and dashboard thermal requirements. This rating is validated per AEC-Q100 Rev G and applies across full voltage range (1.65–3.6 V) and all low-power modes.
Does STM8AL3L48TCY support LIN 2.0 communication?
Yes - the integrated USART supports LIN 2.0 physical layer compliance, including automatic sync-break detection, checksum calculation, and slave node response timing. It operates at standard LIN baud rates (e.g., 9.6 kbps, 19.2 kbps) with hardware-assisted frame handling.
Can the internal 32 kHz LSE oscillator drive the RTC while the MCU is in Halt mode?
Yes - the LSE (32 kHz crystal) directly clocks the RTC in active-halt and Halt modes. With RTC enabled, current drops to 1.3 μA (active-halt) or 400 nA (Halt with PDR), and auto-wakeup events occur with 0.95 ppm timing resolution using the LSE source.
Is SWIM debugging supported on STM8AL3L48TCY in all power modes?
SWIM debugging is fully operational in Run, Wait, and low-power Run modes. In low-power Wait, active-halt, and Halt modes, SWIM remains accessible but requires specific entry sequence and may suspend certain peripherals; full debug visibility is retained without requiring device reset.
STM8AL3L48TCY 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:
STM8AL3L48TCY FAQ
1.How can I place an order for STM8AL3L48TCY through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8AL3L48TCY 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 STM8AL3L48TCY reliable?
The price and inventory of STM8AL3L48TCY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8AL3L48TCY is usually 5 days.
3.What payment methods are accepted for STM8AL3L48TCY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8AL3L48TCY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8AL3L48TCY?
STM8AL3L48TCY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8AL3L48TCY 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 STM8AL3L48TCY?
For technical support, including STM8AL3L48TCY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8AL3L48TCY requirements.
6.How does Aetrix verify that STM8AL3L48TCY is sourced from the original manufacturer or authorized distributors?
All STM8AL3L48TCY 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 STM8AL3L48TCY meets industry standards.
7.What is the process for return or replacement of STM8AL3L48TCY?
All STM8AL3L48TCY units undergo pre-shipment inspection (PSI). If there is an issue with STM8AL3L48TCY, 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 STM8AL3L48TCY part is unused and in its original packaging.
Return procedure for STM8AL3L48TCY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM8AL3L48TCY Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
