STM8AL3L46TCY - 8-Bit 16MHz Automotive MCU, 16KB Flash | STMicroelectronics
N.º da peça: STM8AL3L46TCY ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.28 | $2,28 |
| 10 | $2.05 | $20,50 |
| 100 | $1.82 | $182,00 |
| 500 | $1.64 | $820,00 |
| 1.000 | $1.45 | $1.450,00 |
STM8AL3L46TCY Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer containing a processor core, memory, and programmable input/output peripherals. The STM8A core is an 8-bit CISC architecture optimized for low power consumption and high code density, making it ideal for cost-sensitive embedded control applications. In the hierarchy of embedded systems, an MCU sits between simple logic ICs and complex application processors, providing a self-contained computing platform for real-time control tasks. The STM8AL3L46TCY belongs to the STM8A family, which is specifically designed for automotive body electronics, sensor interfaces, and battery management systems.
Key features of the STM8AL3L46TCY include an integrated LCD driver supporting up to 4x28 segments, a 12-bit analog-to-digital converter (ADC) with up to 16 channels, and multiple communication interfaces including I2C, SPI, and UART. The device also incorporates a low-power RTC, a watchdog timer, and a brown-out reset circuit. Its ultra-low-power modes, including Halt, Active-Halt, and Wait modes, enable significant battery life extension in portable and automotive applications. The 32-pin LQFP package provides a compact footprint while offering sufficient I/O pins for peripheral integration.
From a technical architecture perspective, the STM8AL3L46TCY utilizes a Harvard architecture with separate instruction and data buses, allowing simultaneous instruction fetch and data access. The CPU core operates at up to 16MHz, delivering 16 MIPS throughput. The Flash memory is programmable in-system via the SWIM (Single Wire Interface Module) debug interface, facilitating firmware updates in the field. The integrated EEPROM provides non-volatile data storage for calibration parameters and system configuration, with endurance of up to 300k write/erase cycles.
Typical applications for the STM8AL3L46TCY include automotive body control modules, smart sensors, battery management systems, and dashboard displays. Its combination of low power consumption, integrated LCD driver, and automotive qualification (AEC-Q100) makes it particularly suitable for in-vehicle infotainment, climate control panels, and tire pressure monitoring systems. The device's robust communication interfaces enable seamless integration with other automotive ECUs via CAN or LIN networks.
When designing with this MCU, careful attention should be paid to power supply decoupling and PCB layout to minimize noise and ensure reliable operation. The SWIM debug interface should be brought out to a test point for programming and debugging. Additionally, the LCD driver requires proper configuration of the contrast control register and external bias resistors to achieve optimal display performance.
Alternativas drop-in para STM8AL3L46TCY — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com STM8AL3L46TCY (mesmo formato e footprint) — diferindo em Package, Communication Interfaces, Operating Temperature, RAM Size, Supply Voltage Range.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
STM8AL3L46TAY
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STM8AL3L48TCY
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STM8AL3L46TCY
✅ Drop-In✓ Em estoque
$1.45 / unidade
Ver ficha técnica →STM8AL3L46TAY
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STM8AL3L48TCY
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STM8AL3L46TCY Classificações máximas e características elétricas
| Core Processor | STM8A |
| Core Size | 8-Bit |
| Speed | 16MHz |
| Program Memory Size | 16KB (16K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 2KB |
| EEPROM Size | 1KB |
| Number of I/O | 26 |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT |
| Number of A/D Converters | 1 |
| A/D Converter Resolution | 12-bit |
| Number of A/D Channels | 16 |
| Oscillator Type | Internal |
| Operating Voltage | 1.8V to 3.6V |
| Temperatura de operação | -40°C to +125°C |
| Encapsulamento | 32-LQFP (7x7mm) |
| Tipo de montagem | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| Status RoHS | Compliant |
Configuração de pinos do STM8AL3L46TCY
| Pino 1 | VDD — Power supply |
| Pino 2 | VSS — Ground |
| Pino 3 | PA0 — General purpose I/O / ADC input |
| Pino 4 | PA1 — General purpose I/O / ADC input |
| Pino 5 | PA2 — General purpose I/O / ADC input |
| Pino 6 | PA3 — General purpose I/O / ADC input |
| Pino 7 | PA4 — General purpose I/O / ADC input |
| Pino 8 | PA5 — General purpose I/O / ADC input |
| Pino 9 | PA6 — General purpose I/O / ADC input |
| Pino 10 | PA7 — General purpose I/O / ADC input |
| Pino 11 | PB0 — General purpose I/O / SPI MOSI |
| Pino 12 | PB1 — General purpose I/O / SPI MISO |
| Pino 13 | PB2 — General purpose I/O / SPI SCK |
| Pino 14 | PB3 — General purpose I/O / SPI NSS |
| Pino 15 | PB4 — General purpose I/O / I2C SCL |
| Pino 16 | PB5 — General purpose I/O / I2C SDA |
| Pino 17 | PB6 — General purpose I/O / UART TX |
| Pino 18 | PB7 — General purpose I/O / UART RX |
| Pino 19 | PC0 — General purpose I/O / ADC input |
| Pino 20 | PC1 — General purpose I/O / ADC input |
| Pino 21 | PC2 — General purpose I/O / ADC input |
| Pino 22 | PC3 — General purpose I/O / ADC input |
| Pino 23 | PC4 — General purpose I/O / ADC input |
| Pino 24 | PC5 — General purpose I/O / ADC input |
| Pino 25 | PC6 — General purpose I/O / ADC input |
| Pino 26 | PC7 — General purpose I/O / ADC input |
| Pino 27 | PD0 — General purpose I/O / LCD segment |
| Pino 28 | PD1 — General purpose I/O / LCD segment |
| Pino 29 | PD2 — General purpose I/O / LCD segment |
| Pino 30 | PD3 — General purpose I/O / LCD segment |
| Pino 31 | NRST — Reset (active low) |
| Pino 32 | SWIM — Single wire interface module for debug |
Aplicações típicas
STM8AL3L46TCY é adequado para 6 aplicaçãos: Automotive Body Control Module, Battery Management System, Smart Sensor Interface, Dashboard Display, Tire Pressure Monitoring System, Industrial Control.
Automotive Body Control Module
The STM8AL3L46TCY is ideal for automotive body control modules (BCMs) that manage lighting, windows, and door locks. Its AEC-Q100 qualification ensures reliable operation in harsh automotive environments, while the integrated LCD driver can directly interface with dashboard displays. The 12-bit ADC and multiple communication interfaces (I2C, SPI, UART) enable seamless integration with sensors and actuators. The ultra-low-power modes extend battery life in standby conditions, critical for always-on automotive systems. The 16MHz core provides sufficient processing power for real-time control loops, and the 16KB Flash is adequate for BCM firmware. The wide operating voltage range (1.8V to 3.6V) accommodates automotive battery voltage variations. The 32-pin LQFP package fits compact PCB layouts, and the SWIM debug interface simplifies firmware development and field updates.
Recomendado
Battery Management System
The STM8AL3L46TCY is well-suited for battery management systems (BMS) in electric vehicles and hybrid vehicles. Its 12-bit ADC with 16 channels can monitor individual cell voltages and temperatures, while the low-power modes ensure minimal battery drain during idle periods. The integrated EEPROM stores calibration data and battery parameters, and the I2C interface connects to external battery monitoring ICs. The AEC-Q100 qualification guarantees reliable operation in the demanding automotive environment. The 16MHz core handles real-time battery state-of-charge calculations, and the 16KB Flash is sufficient for BMS algorithms. The wide operating voltage range (1.8V to 3.6V) allows direct connection to the battery pack, and the compact 32-pin LQFP package fits space-constrained BMS PCBs. The watchdog timer enhances system reliability by resetting the MCU in case of firmware hangs.
Recomendado
Smart Sensor Interface
The STM8AL3L46TCY is an excellent choice for smart sensor interfaces in automotive and industrial applications. Its 12-bit ADC with 16 channels can directly interface with analog sensors, while the I2C and SPI interfaces connect to digital sensors. The ultra-low-power modes enable battery-powered wireless sensor nodes, and the integrated LCD driver can display sensor readings locally. The AEC-Q100 qualification makes it suitable for automotive sensor modules, and the wide operating temperature range (-40°C to +125°C) ensures reliable operation in extreme environments. The 16MHz core processes sensor data in real-time, and the 16KB Flash is sufficient for sensor fusion algorithms. The compact 32-pin LQFP package fits small sensor modules, and the SWIM debug interface simplifies firmware development. The brown-out reset circuit ensures reliable startup and operation.
Recomendado
Dashboard Display
The STM8AL3L46TCY is ideal for dashboard displays in automotive vehicles. Its integrated LCD driver supports up to 4x28 segments, enabling direct connection to a segmented LCD without external driver ICs. The 16MHz core handles display refresh and user input processing, while the UART interface communicates with the main ECU. The AEC-Q100 qualification ensures reliable operation in the automotive environment, and the wide operating temperature range (-40°C to +125°C) accommodates extreme cabin temperatures. The ultra-low-power modes extend battery life when the vehicle is off, and the 16KB Flash is sufficient for display firmware. The compact 32-pin LQFP package fits behind the dashboard, and the SWIM debug interface simplifies firmware updates. The brown-out reset circuit ensures reliable startup when the ignition is turned on.
Recomendado
Tire Pressure Monitoring System
The STM8AL3L46TCY is well-suited for tire pressure monitoring systems (TPMS) in automotive vehicles. Its ultra-low-power modes enable battery-powered operation for years, and the 12-bit ADC can interface with pressure sensors. The integrated EEPROM stores calibration data and sensor IDs, and the UART interface communicates with the vehicle's central TPMS receiver. The AEC-Q100 qualification ensures reliable operation in the harsh tire environment, and the wide operating temperature range (-40°C to +125°C) accommodates extreme temperatures. The 16MHz core processes pressure data in real-time, and the 16KB Flash is sufficient for TPMS firmware. The compact 32-pin LQFP package fits inside the tire pressure sensor module, and the SWIM debug interface simplifies firmware development. The watchdog timer enhances system reliability.
Recomendado
Industrial Control
The STM8AL3L46TCY is suitable for industrial control applications such as motor control, process control, and automation. Its 12-bit ADC with 16 channels can interface with various sensors, and the PWM outputs can drive motors and actuators. The I2C, SPI, and UART interfaces enable communication with other industrial devices. The wide operating voltage range (1.8V to 3.6V) accommodates various power supplies, and the extended temperature range (-40°C to +125°C) ensures reliable operation in industrial environments. The 16MHz core handles real-time control loops, and the 16KB Flash is sufficient for control algorithms. The compact 32-pin LQFP package fits industrial PCBs, and the SWIM debug interface simplifies firmware development. The brown-out reset circuit ensures reliable startup and operation.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para STM8AL3L46TCY — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | STM8AL3L46TAY | STM8AL3L48TCY |
|---|---|---|---|
| Package | 32-LQFP (7x7mm) | 32-LQFP (7x7mm) | 32-LQFP (7x7mm) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | STM8A | STM8A | STM8A |
| Speed | 16MHz | 16MHz | 16MHz |
| Flash Memory | 16KB | 16KB | 32KB |
| RAM | 2KB | 2KB | 2KB |
| EEPROM | 1KB | 1KB | 1KB |
| ADC Resolution | 12-bit | 12-bit | 12-bit |
| LCD Driver | Yes (4x28) | Yes (4x28) | Yes (4x28) |
| Automotive Grade | AEC-Q100 | AEC-Q100 | AEC-Q100 |
Principais diferenciais
- Integrated LCD driver supporting up to 4x28 segments (vs STM8AL3L46TAY)
- AEC-Q100 automotive qualification (vs STM8AL3L46TAY)
- Ultra-low-power modes for battery-powered applications (vs STM8AL3L46TAY)
Notas de projeto
The STM8AL3L46TCY operates from 1.8V to 3.6V. Use a 100nF ceramic capacitor close to each VDD pin and a 4.7uF bulk capacitor for decoupling. For battery-powered applications, consider using the low-power modes (Halt, Active-Halt, Wait) to extend battery life. Ensure the power supply can handle the peak current during Flash programming or LCD switching.
For the 32-pin LQFP package, ensure proper PCB layout with a solid ground plane. Place decoupling capacitors as close to the VDD pins as possible. For the SWIM debug interface, keep the trace short and add a series resistor (e.g., 1kΩ) to protect against ESD. For the LCD driver, route the segment and common lines away from high-speed digital signals to minimize noise.
When using the integrated LCD driver, ensure the contrast control register is configured correctly and external bias resistors are placed as specified in the datasheet. Do not exceed the absolute maximum ratings for VDD (4.0V) or the I/O pins. For the ADC, use a stable reference voltage and consider adding a filter capacitor on the VREF pin. The brown-out reset circuit should be enabled to ensure reliable startup.
Informações de conformidade
AEC-Q100 qualified per STMicroelectronics product page. RoHS compliant per distributor listings.
