STM8AF52AATCY - 8-bit Automotive MCU, 128KB Flash, LQFP64 | STMicroelectronics
Référence : STM8AF52AATCY ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.32 | $4,32 |
| 10 | $3.89 | $38,90 |
| 100 | $3.46 | $346,00 |
| 500 | $3.11 | $1 555,00 |
| 1 000 | $2.77 | $2 770,00 |
STM8AF52AATCY Présentation
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data bus, typically used for embedded control applications where cost, power, and simplicity are prioritized over raw processing power. The STM8A core is an enhanced 8-bit architecture with a three-stage pipeline, allowing most instructions to execute in a single clock cycle. This places the STM8AF52AATCY in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor, and it competes with other 8-bit automotive MCUs like the Renesas RL78 and Microchip PIC18 families.
Key features include a wide operating voltage range of 3.0V to 5.5V, an operating temperature range of -40°C to +150°C (AEC-Q100 Grade 0), and a rich set of communication interfaces. The integrated CAN 2.0B controller and LIN support make it ideal for automotive networking. The 10-bit ADC with up to 16 channels enables precise sensor monitoring, while the advanced timer peripherals support PWM generation for motor control. The device also includes a true EEPROM with up to 300k write/erase cycles, eliminating the need for external EEPROM in many designs.
Architecturally, the STM8AF52AATCY uses a Harvard architecture with separate program and data memory buses, allowing simultaneous instruction fetch and data access. The core includes a 24-bit program counter, 16-bit stack pointer, and a rich instruction set optimized for control applications. The Flash memory is organized into 128 KB with read-while-write capability, enabling firmware updates without halting the system. The device also features a flexible clock system with internal and external oscillators, including a low-power RC oscillator for standby modes.
Typical applications include automotive body control modules (BCM), power window and seat control, HVAC systems, and motor control for pumps and fans. The CAN interface allows seamless integration into vehicle networks, while the LIN interface supports low-cost sub-networks. The wide temperature range and AEC-Q100 qualification ensure reliable operation in harsh automotive environments.
When designing with this MCU, pay attention to the power supply decoupling: place a 100nF capacitor close to each VDD pin and a 4.7uF bulk capacitor on the main supply. The STM8A core is 5V tolerant, but ensure the ADC reference voltage is stable for accurate conversions. Also, configure the option bytes correctly for the desired clock source and watchdog settings before production.
Alternatives de remplacement direct pour STM8AF52AATCY — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
STM8AF52A8TCY
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM8AF51AATCY
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM8AF53AATCY
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM8AF52A9TCY
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM8AF52AATCX
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM8AF52AATCY Valeurs maximales et caractéristiques électriques
| Core | STM8A 8-bit |
| Fréquence d'horloge maximale | 24 MHz |
| Flash Memory | 128 KB |
| RAM | 6 KB |
| EEPROM | 2 KB |
| Operating Voltage | 3.0 V to 5.5 V |
| Température de fonctionnement | -40C to +150C |
| Boîtier | LQFP-64 (10x10 mm) |
| Type de montage | Surface Mount |
| Number of I/O Pins | 52 |
| ADC Resolution | 10-bit |
| ADC Channels | 16 |
| CAN Interface | 1x CAN 2.0B |
| LIN/UART | 2x LIN/UART |
| SPI | 1x SPI |
| I2C | 1x I2C |
| Timers | 2x 16-bit advanced, 2x 16-bit general purpose, 1x 8-bit basic |
| AEC-Q100 | Grade 0 |
| RoHS | Compliant |
Configuration des broches de STM8AF52AATCY
| Broche 1 | PE2 — Port E2, general purpose I/O |
| Broche 2 | PE3 — Port E3, general purpose I/O |
| Broche 3 | PE4 — Port E4, general purpose I/O |
| Broche 4 | PE5 — Port E5, general purpose I/O |
| Broche 5 | VSS — Ground |
| Broche 6 | VDD — Power supply |
| Broche 7 | PE6 — Port E6, general purpose I/O |
| Broche 8 | PE7 — Port E7, general purpose I/O |
| Broche 9 | PD0 — Port D0, general purpose I/O |
| Broche 10 | PD1 — Port D1, general purpose I/O |
| Broche 11 | PD2 — Port D2, general purpose I/O |
| Broche 12 | PD3 — Port D3, general purpose I/O |
| Broche 13 | PD4 — Port D4, general purpose I/O |
| Broche 14 | PD5 — Port D5, general purpose I/O |
| Broche 15 | PD6 — Port D6, general purpose I/O |
| Broche 16 | PD7 — Port D7, general purpose I/O |
| Broche 17 | VSS — Ground |
| Broche 18 | VDD — Power supply |
| Broche 19 | PC0 — Port C0, general purpose I/O |
| Broche 20 | PC1 — Port C1, general purpose I/O |
| Broche 21 | PC2 — Port C2, general purpose I/O |
| Broche 22 | PC3 — Port C3, general purpose I/O |
| Broche 23 | PC4 — Port C4, general purpose I/O |
| Broche 24 | PC5 — Port C5, general purpose I/O |
| Broche 25 | PC6 — Port C6, general purpose I/O |
| Broche 26 | PC7 — Port C7, general purpose I/O |
| Broche 27 | PB0 — Port B0, general purpose I/O |
| Broche 28 | PB1 — Port B1, general purpose I/O |
| Broche 29 | PB2 — Port B2, general purpose I/O |
| Broche 30 | PB3 — Port B3, general purpose I/O |
| Broche 31 | PB4 — Port B4, general purpose I/O |
| Broche 32 | PB5 — Port B5, general purpose I/O |
| Broche 33 | PB6 — Port B6, general purpose I/O |
| Broche 34 | PB7 — Port B7, general purpose I/O |
| Broche 35 | VSS — Ground |
| Broche 36 | VDD — Power supply |
| Broche 37 | PA0 — Port A0, general purpose I/O |
| Broche 38 | PA1 — Port A1, general purpose I/O |
| Broche 39 | PA2 — Port A2, general purpose I/O |
| Broche 40 | PA3 — Port A3, general purpose I/O |
| Broche 41 | PA4 — Port A4, general purpose I/O |
| Broche 42 | PA5 — Port A5, general purpose I/O |
| Broche 43 | PA6 — Port A6, general purpose I/O |
| Broche 44 | PA7 — Port A7, general purpose I/O |
| Broche 45 | VREF+ — ADC reference voltage |
| Broche 46 | VSS — Ground |
| Broche 47 | VDD — Power supply |
| Broche 48 | PE0 — Port E0, general purpose I/O |
| Broche 49 | PE1 — Port E1, general purpose I/O |
| Broche 50 | NRST — Reset (active low) |
| Broche 51 | PF0 — Port F0, general purpose I/O |
| Broche 52 | PF1 — Port F1, general purpose I/O |
| Broche 53 | PF2 — Port F2, general purpose I/O |
| Broche 54 | PF3 — Port F3, general purpose I/O |
| Broche 55 | PF4 — Port F4, general purpose I/O |
| Broche 56 | PF5 — Port F5, general purpose I/O |
| Broche 57 | PF6 — Port F6, general purpose I/O |
| Broche 58 | PF7 — Port F7, general purpose I/O |
| Broche 59 | VSS — Ground |
| Broche 60 | VDD — Power supply |
| Broche 61 | OSCIN — External oscillator input |
| Broche 62 | OSCOUT — External oscillator output |
| Broche 63 | PG0 — Port G0, general purpose I/O |
| Broche 64 | PG1 — Port G1, general purpose I/O |
Applications typiques
STM8AF52AATCY convient pour 6 applications: Automotive Body Control Module, Motor Control for Pumps and Fans, Automotive Lighting Control, HVAC Control System, Electric Power Steering (EPS), Industrial Automation and Control.
Automotive Body Control Module
The STM8AF52AATCY is ideal for body control modules (BCM) that manage lighting, windows, locks, and wipers. Its CAN interface allows communication with the vehicle network, while the 128 KB Flash provides ample space for complex control algorithms and diagnostics. The wide operating voltage (3.0V-5.5V) and AEC-Q100 Grade 0 temperature range (-40°C to +150°C) ensure reliable operation in harsh automotive environments. The 10-bit ADC monitors switch inputs and sensor signals, and the advanced timers generate PWM for dimming and motor control. The LIN interface supports low-cost sub-networks for door modules and seat control. With 52 I/O pins, it can handle multiple inputs and outputs, making it a versatile choice for BCM designs.
Recommandé
Motor Control for Pumps and Fans
The STM8AF52AATCY excels in motor control applications such as electric water pumps, cooling fans, and HVAC blowers. Its two advanced 16-bit timers generate complementary PWM signals with dead-time insertion, essential for driving H-bridges or 3-phase inverters. The 10-bit ADC with up to 16 channels samples motor phase currents and rotor position sensors, enabling sensorless or sensored field-oriented control (FOC). The CAN interface allows coordination with the engine control unit (ECU) for demand-based operation. The 24 MHz core provides sufficient processing power for real-time control loops, while the 128 KB Flash stores complex control algorithms and calibration data. The wide temperature range and AEC-Q100 qualification ensure reliable operation under hood, where temperatures can exceed 125°C.
Recommandé
Automotive Lighting Control
The STM8AF52AATCY is well-suited for automotive lighting control, including headlamps, tail lamps, and interior lighting. Its advanced timers can generate PWM signals for dimming and intensity control, while the 10-bit ADC monitors ambient light sensors and switch inputs. The CAN interface allows communication with the body control module for adaptive lighting functions. The 128 KB Flash stores lighting patterns and diagnostic routines, and the 2 KB EEPROM retains calibration data and fault codes. The wide operating voltage range (3.0V-5.5V) accommodates battery voltage variations, and the AEC-Q100 Grade 0 temperature range ensures operation in extreme conditions. The 52 I/O pins provide ample connectivity for multiple LED drivers and switches.
Recommandé
HVAC Control System
The STM8AF52AATCY is ideal for automotive HVAC control systems, managing temperature, airflow, and compressor operation. Its multiple communication interfaces (CAN, LIN, UART) allow integration with the vehicle network and sensor modules. The 10-bit ADC reads temperature sensors and potentiometers for user controls, while the advanced timers generate PWM for blower motor speed control and actuator positioning. The 128 KB Flash stores complex control algorithms for automatic climate control, and the 2 KB EEPROM retains user preferences and diagnostic data. The wide operating temperature range (-40°C to +150°C) ensures reliable operation in both cold and hot climates, and the AEC-Q100 qualification guarantees long-term reliability.
Recommandé
Electric Power Steering (EPS)
The STM8AF52AATCY can be used in electric power steering systems, where it processes torque sensor signals and controls the assist motor. The 10-bit ADC with high resolution samples torque and angle sensors, while the advanced timers generate PWM for the motor drive. The CAN interface communicates with the vehicle stability control system for coordinated steering assistance. The 24 MHz core provides fast response times for safety-critical control loops, and the 128 KB Flash stores complex control algorithms and safety diagnostics. The AEC-Q100 Grade 0 qualification ensures operation in the harsh under-hood environment, and the wide voltage range (3.0V-5.5V) accommodates battery voltage fluctuations. The 52 I/O pins allow connection to multiple sensors and actuators.
Recommandé
Industrial Automation and Control
Beyond automotive, the STM8AF52AATCY is suitable for industrial automation and control applications such as PLCs, motor drives, and sensor interfaces. Its robust communication interfaces (CAN, SPI, I2C, UART) enable connection to industrial networks and peripherals. The 10-bit ADC monitors analog sensors, and the advanced timers generate precise PWM for motor control and actuator positioning. The wide operating voltage range (3.0V-5.5V) and industrial temperature range (-40°C to +150°C) make it suitable for harsh industrial environments. The 128 KB Flash provides ample space for control algorithms and data logging, and the 2 KB EEPROM stores configuration parameters. The 52 I/O pins offer flexibility for various input/output configurations.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM8AF52AATCY — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM8AF52A8TCY | STM8AF51AATCY | STM8AF53AATCY |
|---|---|---|---|---|
| Package | LQFP-64 | LQFP-64 | LQFP-64 | LQFP-64 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Flash Memory | 128 KB | 128 KB | 64 KB | 256 KB |
| RAM | 6 KB | 6 KB | 4 KB | 8 KB |
| EEPROM | 2 KB | 2 KB | 2 KB | 2 KB |
| Maximum Clock Frequency | 24 MHz | 24 MHz | 24 MHz | 24 MHz |
| Operating Temperature | -40C to +150C | -40C to +150C | -40C to +150C | -40C to +150C |
| AEC-Q100 Grade | Grade 0 | Grade 0 | Grade 0 | Grade 0 |
| CAN Interface | 1x CAN 2.0B | 1x CAN 2.0B | 1x CAN 2.0B | 1x CAN 2.0B |
| Number of I/O Pins | 52 | 52 | 52 | 52 |
Principaux différenciateurs
- AEC-Q100 Grade 0 qualification (vs STM8AF52A9TCY)
- 128 KB Flash memory (vs STM8AF51AATCY)
- Cost-effective 8-bit architecture (vs STM8AF53AATCY)
Notes de conception
The STM8AF52AATCY operates from 3.0V to 5.5V. For automotive applications, use a low-dropout regulator (LDO) to step down the battery voltage (12V) to 5V. Place a 100nF ceramic capacitor close to each VDD pin and a 4.7uF bulk capacitor on the main supply. Ensure the VREF+ pin is connected to a stable reference voltage for accurate ADC conversions, typically the same as VDD with a 100nF decoupling capacitor.
For the LQFP-64 package, ensure proper soldering with a stencil thickness of 0.125mm. Place decoupling capacitors as close as possible to the power pins to minimize inductance. For the crystal oscillator (if used), keep traces short and shield them with ground planes to reduce noise. Follow STMicroelectronics' layout guidelines in the datasheet for optimal EMC performance.
A common pitfall is forgetting to configure the option bytes for the clock source and watchdog. The STM8AF52AATCY defaults to an internal RC oscillator, but for precise timing, use an external crystal. Also, ensure the NRST pin is properly pulled up with a 100nF capacitor to ground for reliable reset. Do not leave unused I/O pins floating; configure them as inputs with pull-ups or outputs to avoid excessive current consumption.
Informations de conformité
AEC-Q100 Grade 0 qualified. RoHS compliant per STMicroelectronics product page. Halogen-free status not explicitly stated in provided data.
