STM8AL3188TCY - 8-bit Ultra-Low-Power MCU 64KB Flash | STMicroelectronics
MPN: STM8AL3188TCY β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.25 | $3.25 |
| 10 | $2.95 | $29.50 |
| 100 | $2.45 | $245.00 |
| 500 | $2.15 | $1,075.00 |
| 1,000 | $1.85 | $1,850.00 |
Drop-in alternatives for STM8AL3188TCY β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
STM8AL3189TCY
β Drop-Inπ Reference alternative (not in catalog)
STM8AL3168TCY
β Drop-Inπ Reference alternative (not in catalog)
STM8AL3148TCY
β Drop-Inπ Reference alternative (not in catalog)
STM8L151C8T6
β‘ Same Packageπ Reference alternative (not in catalog)
MSP430FR2433
β‘ Same Packageπ Reference alternative (not in catalog)
STM8AL3188TCY Maximum Ratings & Electrical Characteristics
| Core | STM8 8-bit CISC |
| Maximum Clock Frequency | 16 MHz |
| Flash Memory | 64 KB |
| RAM | 4 KB |
| EEPROM | 2 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Operating Temperature Range | -40Β°C to +85Β°C |
| Package | LQFP-48 (TCY) |
| ADC Resolution | 12-bit |
| ADC Channels | 25 |
| Communication Interfaces | SPI, I2C, UART |
| LCD Driver | 8x40 segments |
| RTC | Ultra-low-power with automatic wake-up |
| Low-Power Modes | Halt, Active-Halt, Wait |
| Halt Mode Current | 0.35 Β΅A (with RTC) |
| RoHS Status | Compliant |
STM8AL3188TCY Pin Configuration
| Pin 1 | VDD β Power supply |
| Pin 2 | VSS β Ground |
| Pin 3 | PB0 β General purpose I/O |
| Pin 4 | PB1 β General purpose I/O |
| Pin 5 | PB2 β General purpose I/O |
| Pin 6 | PB3 β General purpose I/O |
| Pin 7 | PB4 β General purpose I/O |
| Pin 8 | PB5 β General purpose I/O |
| Pin 9 | PB6 β General purpose I/O |
| Pin 10 | PB7 β General purpose I/O |
| Pin 11 | PC0 β General purpose I/O |
| Pin 12 | PC1 β General purpose I/O |
| Pin 13 | PC2 β General purpose I/O |
| Pin 14 | PC3 β General purpose I/O |
| Pin 15 | PC4 β General purpose I/O |
| Pin 16 | PC5 β General purpose I/O |
| Pin 17 | PC6 β General purpose I/O |
| Pin 18 | PC7 β General purpose I/O |
| Pin 19 | PD0 β General purpose I/O |
| Pin 20 | PD1 β General purpose I/O |
| Pin 21 | PD2 β General purpose I/O |
| Pin 22 | PD3 β General purpose I/O |
| Pin 23 | PD4 β General purpose I/O |
| Pin 24 | PD5 β General purpose I/O |
| Pin 25 | PD6 β General purpose I/O |
| Pin 26 | PD7 β General purpose I/O |
| Pin 27 | PE0 β General purpose I/O |
| Pin 28 | PE1 β General purpose I/O |
| Pin 29 | PE2 β General purpose I/O |
| Pin 30 | PE3 β General purpose I/O |
| Pin 31 | PE4 β General purpose I/O |
| Pin 32 | PE5 β General purpose I/O |
| Pin 33 | PE6 β General purpose I/O |
| Pin 34 | PE7 β General purpose I/O |
| Pin 35 | PF0 β General purpose I/O |
| Pin 36 | PF1 β General purpose I/O |
| Pin 37 | PF2 β General purpose I/O |
| Pin 38 | PF3 β General purpose I/O |
| Pin 39 | PF4 β General purpose I/O |
| Pin 40 | PF5 β General purpose I/O |
| Pin 41 | PF6 β General purpose I/O |
| Pin 42 | PF7 β General purpose I/O |
| Pin 43 | NRST β Reset (active low) |
| Pin 44 | VDD β Power supply |
| Pin 45 | VSS β Ground |
| Pin 46 | OSC_IN β External clock input |
| Pin 47 | OSC_OUT β External clock output |
| Pin 48 | VDD β Power supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
STM8AL3188TCY is suitable for 6 applications: Smart Meters, Portable Medical Devices, Wireless Sensor Networks, Industrial Monitoring, Battery-Powered Consumer Electronics, Energy Harvesting Systems.
Smart Meters
The STM8AL3188TCY is ideal for smart gas, water, and electricity meters due to its ultra-low-power RTC and low Halt mode current (0.35 Β΅A). It can run for years on a single battery while periodically reading sensors and transmitting data via UART or wireless modules. The integrated LCD driver allows direct display of consumption data, and the 12-bit ADC interfaces with flow sensors and voltage dividers. In a typical smart meter, the MCU wakes up every second to sample the sensor, updates the LCD, and sends data via a 868 MHz radio module. The low-power modes ensure minimal energy consumption between measurements, extending battery life to over 10 years. The wide supply voltage range (1.8V to 3.6V) accommodates battery voltage drop over time, and the EEPROM stores calibration data and consumption history.
Recommended
Portable Medical Devices
The STM8AL3188TCY is well-suited for portable medical devices like glucose meters, pulse oximeters, and blood pressure monitors. Its ultra-low-power operation extends battery life, crucial for devices used daily. The 12-bit ADC with 25 channels can interface with biosensors, and the LCD driver supports small displays for results. The MCU's low-power RTC enables scheduled measurements and data logging. In a glucose meter, the STM8AL3188TCY reads the glucose sensor via the ADC, processes the data, and displays the result on an LCD. The device can operate for months on a coin cell battery due to the low Halt current. The EEPROM stores patient history, and the UART interface allows data transfer to a smartphone or PC. The wide operating temperature range ensures reliable operation in various environments.
Recommended
Wireless Sensor Networks
The STM8AL3188TCY is perfect for wireless sensor nodes in IoT applications, such as environmental monitoring, agriculture, and smart buildings. Its ultra-low-power modes allow nodes to run on batteries for years. The MCU can wake up periodically, read sensors, and transmit data via a wireless module. The 12-bit ADC interfaces with various analog sensors, and the UART/SPI interfaces connect to radios like LoRa or Zigbee. In a typical node, the STM8AL3188TCY sleeps in Halt mode for most of the time, waking up every 15 minutes to take a temperature and humidity reading, then sends the data via a LoRa module. The low-power RTC ensures accurate wake-up timing. The device's small footprint and low cost make it ideal for large-scale deployments.
Recommended
Industrial Monitoring
The STM8AL3188TCY is used in industrial monitoring systems for equipment health, process control, and predictive maintenance. Its robust design and wide operating temperature range (-40Β°C to +85Β°C) make it suitable for harsh environments. The MCU can interface with industrial sensors via the ADC and communication interfaces, and its low-power modes reduce energy consumption in remote monitoring stations. In a vibration monitoring system, the STM8AL3188TCY reads an accelerometer via SPI, processes the data, and sends alerts via UART to a central controller. The EEPROM stores calibration data and event logs. The device's reliability and long-term availability make it a trusted choice for industrial applications.
Recommended
Battery-Powered Consumer Electronics
The STM8AL3188TCY is ideal for battery-powered consumer devices like remote controls, wearable fitness trackers, and smart watches. Its ultra-low-power consumption ensures long battery life, and the integrated LCD driver supports small displays. The MCU can handle user input via GPIO, process data, and communicate with other devices via Bluetooth or other wireless protocols. In a fitness tracker, the STM8AL3188TCY reads an accelerometer, counts steps, and displays the count on an LCD. The device can run for months on a coin cell battery due to the low Halt current. The UART interface allows firmware updates and data synchronization with a smartphone.
Recommended
Energy Harvesting Systems
The STM8AL3188TCY is designed for energy harvesting applications where power is scavenged from solar, thermal, or vibration sources. Its ultra-low-power operation allows it to run on tiny amounts of harvested energy. The MCU can wake up periodically to take measurements and transmit data, consuming minimal energy. The wide supply voltage range (1.8V to 3.6V) accommodates the variable output of energy harvesters. In a solar-powered sensor node, the STM8AL3188TCY operates from a supercapacitor charged by a small solar panel. It wakes up every hour to read a temperature sensor and send the data via a radio module. The low-power RTC ensures accurate timing, and the EEPROM stores data during periods of no power.
Recommended
Recommended Products Summary
Engineering reference data for STM8AL3188TCY β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM8AL3189TCY | STM8AL3168TCY | STM8AL3148TCY | STM8L151C8T6 | MSP430FR2433 |
|---|---|---|---|---|---|---|
| Package | LQFP-48 (TCY) | LQFP-48 (TCY) - same | LQFP-48 (TCY) - same | LQFP-48 (TCY) - same | LQFP-48 (TCY) - same | LQFP-48 (TCY) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | Texas Instruments |
| Core Architecture | 8-bit STM8 | 8-bit STM8 | 8-bit STM8 | 8-bit STM8 | 8-bit STM8 | 16-bit MSP430 |
| Flash Memory | 64 KB | 128 KB | 32 KB | 16 KB | 64 KB | 15 KB |
| RAM | 4 KB | 4 KB | 2 KB | 2 KB | 4 KB | 4 KB |
| EEPROM | 2 KB | 2 KB | 1 KB | 1 KB | 2 KB | 0.5 KB (FRAM) |
| Max Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Halt Mode Current (with RTC) | 0.35 Β΅A | 0.35 Β΅A | 0.35 Β΅A | 0.35 Β΅A | 1 Β΅A | 0.4 Β΅A |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
Key Differentiators
- Ultra-low-power RTC with 0.35 Β΅A Halt mode current (vs STM8L151C8T6)
- Integrated LCD driver supporting 8x40 segments (vs MSP430FR2433)
- True EEPROM for data storage (vs MSP430FR2433)
Design Notes
For ultra-low-power operation, use the Halt mode with RTC enabled to achieve 0.35 Β΅A current consumption. Ensure the power supply is stable and decoupled with a 100 nF capacitor close to each VDD pin. Use a low-leakage battery and consider a supercapacitor for peak current demands.
Place the crystal oscillator (if used) close to the OSC_IN and OSC_OUT pins with proper load capacitors. Keep the ground plane continuous under the MCU to minimize noise. For the LCD driver, route the segment and common lines away from high-speed digital signals to avoid crosstalk.
Do not exceed the absolute maximum ratings for VDD (3.6V). Ensure the NRST pin is properly pulled up with a 10 kΞ© resistor and a 100 nF capacitor to ground for reliable reset. When using the ADC, add a 10 nF capacitor on each analog input to reduce noise.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified. Halogen-free status not specified in available data.
