STM8AL3L88TCY - 8-bit Ultra-Low-Power MCU, 64KB Flash | STMicroelectronics
MPN： STM8AL3L88TCY ✓ 啟用中STM8AL3L88TCY 概覽
An 8-bit microcontroller (MCU) is a compact integrated circuit designed for embedded control applications, executing instructions on an 8-bit data bus. It typically includes a CPU, memory (Flash, RAM, EEPROM), and peripherals such as timers, ADCs, and communication interfaces. In the system hierarchy, an MCU sits between a simple logic IC and a full application processor, providing programmable intelligence for devices like sensors, meters, and industrial controllers. The STM8AL3L88TCY is optimized for ultra-low-power operation, making it suitable for battery-powered and energy-harvesting applications.
Key features include multiple low-power modes (Wait, Active-Halt, Halt) with current consumption as low as 0.35 µA in Halt mode, a 12-bit ADC with up to 25 channels, and a flexible clock system with an internal 16 MHz RC oscillator. The device also includes a real-time clock (RTC) with calendar, and a tamper detection feature for security-sensitive applications. The LQFP-48 package provides a compact footprint while offering sufficient I/O pins for complex designs.
Technically, the STM8AL3L88TCY uses a Harvard architecture with a 3-stage pipeline, achieving up to 16 MIPS at 16 MHz. The ultra-low-power design is achieved through advanced power management, including a low-power oscillator and the ability to disable unused peripherals. The EEPROM allows data storage without external components, and the integrated bootloader supports in-application programming (IAP) for firmware updates.
Typical applications include smart meters, portable medical devices, industrial sensors, and building automation systems. The ultra-low-power consumption extends battery life in remote monitoring applications, while the rich analog peripherals enable precise sensor interfacing. The wide operating voltage range and robust ESD protection make it suitable for harsh industrial environments.
When designing with this device, pay attention to the power supply decoupling and the selection of the appropriate low-power mode for your application. The Halt mode offers the lowest power consumption but requires an external or RTC wake-up source. Ensure the clock configuration is optimized for your performance and power requirements.
直接替換替代品，適用於 STM8AL3L88TCY — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： STM8AL3L88TCY （相同外形與佔位） — 差異在於 Package, Flash Memory, Communication Interfaces, Comparators, Core.
STM8L151C8T6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM8L151C6T6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM8L152C8T6
✅ 直接替換 ⚠️ 規格未經驗證✓ 有庫存
$1.5586 / 單位
查看資料表 →STM8AL3L88TCY 最大額定值與電氣特性
| Core | STM8 8-bit |
| 最大時脈頻率 | 16 MHz |
| Flash Memory | 64 KB |
| RAM | 4 KB |
| EEPROM | 2 KB |
| Operating Voltage | 1.8 V to 3.6 V |
| 封裝 | LQFP-48 (TCY) |
| ADC Resolution | 12-bit |
| ADC Channels | 25 |
| Comparators | 2 |
| Communication Interfaces | SPI, I2C, USART |
| Low-Power Modes | Wait, Active-Halt, Halt |
| Halt Mode Current | 0.35 µA |
| 工作溫度 | -40°C to +85°C |
| RoHS 狀態 | Compliant |
STM8AL3L88TCY 腳位配置
| 腳位 1 | VDD — Power supply |
| 腳位 2 | VSS — Ground |
| 腳位 3 | PA0 — General purpose I/O / ADC input |
| 腳位 4 | PA1 — General purpose I/O / ADC input |
| 腳位 5 | PA2 — General purpose I/O / ADC input |
| 腳位 6 | PA3 — General purpose I/O / ADC input |
| 腳位 7 | NRST — Reset (active low) |
| 腳位 8 | VSS — Ground |
| 腳位 9 | VDD — Power supply |
| 腳位 10 | PB0 — General purpose I/O / SPI clock |
| 腳位 11 | PB1 — General purpose I/O / SPI MISO |
| 腳位 12 | PB2 — General purpose I/O / SPI MOSI |
| 腳位 13 | PB3 — General purpose I/O / SPI chip select |
| 腳位 14 | PB4 — General purpose I/O / I2C SCL |
| 腳位 15 | PB5 — General purpose I/O / I2C SDA |
| 腳位 16 | PB6 — General purpose I/O / USART TX |
| 腳位 17 | PB7 — General purpose I/O / USART RX |
| 腳位 18 | VSS — Ground |
| 腳位 19 | VDD — Power supply |
| 腳位 20 | PC0 — General purpose I/O / ADC input |
| 腳位 21 | PC1 — General purpose I/O / ADC input |
| 腳位 22 | PC2 — General purpose I/O / ADC input |
| 腳位 23 | PC3 — General purpose I/O / ADC input |
| 腳位 24 | PC4 — General purpose I/O / ADC input |
| 腳位 25 | PC5 — General purpose I/O / ADC input |
| 腳位 26 | PC6 — General purpose I/O / ADC input |
| 腳位 27 | PC7 — General purpose I/O / ADC input |
| 腳位 28 | VSS — Ground |
| 腳位 29 | VDD — Power supply |
| 腳位 30 | PD0 — General purpose I/O / USART CK |
| 腳位 31 | PD1 — General purpose I/O / USART RTS |
| 腳位 32 | PD2 — General purpose I/O / USART CTS |
| 腳位 33 | PD3 — General purpose I/O / timer input |
| 腳位 34 | PD4 — General purpose I/O / timer output |
| 腳位 35 | PD5 — General purpose I/O / timer output |
| 腳位 36 | PD6 — General purpose I/O / timer output |
| 腳位 37 | PD7 — General purpose I/O / timer output |
| 腳位 38 | VSS — Ground |
| 腳位 39 | VDD — Power supply |
| 腳位 40 | PE0 — General purpose I/O / ADC input |
| 腳位 41 | PE1 — General purpose I/O / ADC input |
| 腳位 42 | PE2 — General purpose I/O / ADC input |
| 腳位 43 | PE3 — General purpose I/O / ADC input |
| 腳位 44 | PE4 — General purpose I/O / ADC input |
| 腳位 45 | PE5 — General purpose I/O / ADC input |
| 腳位 46 | PE6 — General purpose I/O / ADC input |
| 腳位 47 | PE7 — General purpose I/O / ADC input |
| 腳位 48 | VSS — Ground |
典型應用
STM8AL3L88TCY 適用於 6 應用s: Smart Metering, Portable Medical Devices, Industrial Sensors, Building Automation, Wireless Sensor Networks, Portable Consumer Electronics.
Smart Metering
The STM8AL3L88TCY is ideal for smart meters due to its ultra-low-power consumption (0.35 µA in Halt mode) and integrated 12-bit ADC for accurate measurement. It can operate for years on battery power while periodically waking to record consumption. The EEPROM stores calibration data and usage history without external memory. Communication interfaces (SPI, I2C, USART) enable connectivity with PLC or RF modules for data transmission. The wide operating voltage (1.8V-3.6V) accommodates battery voltage variations. In a typical smart meter, the MCU reads current and voltage sensors via the ADC, processes the data, and communicates readings to a central system. The low-power modes ensure minimal energy drain between measurements, extending battery life to 10+ years. Design considerations include using the RTC for scheduled wake-ups and optimizing ADC sampling to balance accuracy and power.
推薦
Portable Medical Devices
The STM8AL3L88TCY is well-suited for portable medical devices like glucose meters and pulse oximeters. Its ultra-low-power operation extends battery life, critical for patient convenience. The 12-bit ADC provides precise sensor readings, and the EEPROM stores patient data securely. The device's small LQFP-48 package fits compact designs. In a glucose meter, the MCU reads the sensor via the ADC, calculates glucose levels, and displays results on an LCD. The low-power modes allow the device to remain in standby for months. The integrated comparators can detect sensor faults. Design considerations include using the RTC for timed measurements and ensuring EMC compliance for medical environments. The wide temperature range (-40°C to +85°C) ensures reliable operation in various conditions.
推薦
Industrial Sensors
The STM8AL3L88TCY is ideal for industrial sensors such as pressure, temperature, and flow sensors. Its robust design operates from -40°C to +85°C, and the 12-bit ADC interfaces directly with analog sensors. The multiple communication interfaces (SPI, I2C, USART) allow connection to industrial networks like Modbus. The ultra-low-power modes enable battery-powered wireless sensors. In a typical pressure sensor, the MCU reads the sensor via the ADC, applies calibration coefficients from EEPROM, and transmits data over RS-485. The device's ESD protection ensures reliability in harsh environments. Design considerations include proper decoupling and using the watchdog timer for fault recovery. The wide voltage range supports 24V industrial supplies with a regulator.
推薦
Building Automation
The STM8AL3L88TCY is used in building automation for HVAC control, lighting, and security systems. Its low-power operation is ideal for battery-powered sensors and actuators. The integrated RTC enables scheduled events, and the communication interfaces support BACnet or KNX protocols via external transceivers. In a smart thermostat, the MCU reads temperature sensors, controls relays for heating/cooling, and communicates with a central controller. The EEPROM stores user settings and schedules. The device's multiple timers can generate PWM for fan speed control. Design considerations include using the low-power modes during idle periods and ensuring proper isolation for safety. The wide operating voltage allows direct connection to 3.3V logic.
推薦
Wireless Sensor Networks
The STM8AL3L88TCY is perfect for wireless sensor nodes in IoT applications. Its ultra-low-power consumption (0.35 µA Halt) allows battery-powered nodes to last years. The MCU wakes periodically to read sensors, process data, and transmit via an external RF module. The SPI interface connects to sub-GHz or 2.4GHz transceivers. In a typical node, the MCU reads a temperature sensor, formats the data, and sends it over SPI to a radio. The EEPROM stores node ID and configuration. The device's low-power modes are crucial for energy harvesting applications. Design considerations include minimizing active time and using the RTC for scheduled wake-ups. The wide voltage range supports various battery chemistries.
推薦
Portable Consumer Electronics
The STM8AL3L88TCY is used in portable consumer devices like fitness trackers and remote controls. Its small package and low power consumption are ideal for wearable designs. The 12-bit ADC can interface with accelerometers and heart rate sensors. The EEPROM stores user profiles and settings. In a fitness tracker, the MCU reads motion sensors, counts steps, and displays data on an OLED. The low-power modes allow the device to run for weeks on a coin cell. The communication interfaces enable Bluetooth connectivity via an external module. Design considerations include optimizing the ADC sampling rate and using the RTC for timekeeping. The wide temperature range ensures operation in various climates.
推薦
推薦產品摘要
工程參考資料，適用於 STM8AL3L88TCY — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | STM8AL3L88TAY | STM8L151C8T6 | STM8L151C6T6 | STM8L152C8T6 |
|---|---|---|---|---|---|
| Package | LQFP-48 | LQFP-64 | LQFP-48 | LQFP-48 | LQFP-48 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 2 KB | 4 KB |
| Halt Mode Current | 0.35 µA | 0.35 µA | 0.5 µA | 0.5 µA | 0.5 µA |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| LCD Driver | No | No | No | No | Yes |
| Operating Voltage | 1.8V - 3.6V | 1.8V - 3.6V | 1.8V - 3.6V | 1.8V - 3.6V | 1.8V - 3.6V |
主要差異化特點
- Ultra-low Halt mode current of 0.35 µA (對比STM8L151C8T6)
- Integrated EEPROM of 2 KB (對比STM8L151C6T6)
- LQFP-48 package with 25 ADC channels (對比STM8AL3L88TAY)
設計說明
For ultra-low-power applications, use the Halt mode with an RTC wake-up. Ensure the power supply is stable and decoupled with 100nF and 10µF capacitors close to the VDD pins. The Halt mode current is 0.35 µA, but this can increase if the RTC is enabled. Optimize the clock configuration to use the low-speed internal oscillator (LSI) for RTC to minimize power consumption.
Place decoupling capacitors (100nF) as close as possible to each VDD pin, and a bulk capacitor (10µF) near the main power entry. For the LQFP-48 package, ensure proper grounding with a solid ground plane. Keep analog and digital grounds separate if using the ADC for precision measurements. Follow ST's layout guidelines in the datasheet for optimal EMC performance.
Avoid floating I/O pins by configuring them as outputs or enabling pull-ups. The NRST pin must be pulled high with a 100nF capacitor to ground for reliable reset. When using the ADC, ensure the reference voltage is stable and bypassed. Do not exceed the absolute maximum ratings for VDD (3.6V) to prevent damage. Use the watchdog timer to recover from software hangs in industrial environments.
合規資訊
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified.
