STM8L151G6U6 - 8-bit Ultra-Low-Power MCU, 32KB Flash | STMicroelectronics
MPN: STM8L151G6U6 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.38 | $1.38 |
| 10 | $1.24 | $12.40 |
| 100 | $1.1 | $110.00 |
| 500 | $0.99 | $495.00 |
| 1,000 | $0.89 | $890.00 |
Drop-in alternatives for STM8L151G6U6 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:
STM8L151G6U3
β Drop-Inπ Reference alternative (not in catalog)
STM8L151G4U6
β Drop-Inπ Reference alternative (not in catalog)
STM8L152G6U6
β Drop-Inπ Reference alternative (not in catalog)
STM8L151G6U6TR
β Drop-Inπ Reference alternative (not in catalog)
STM8L151G6U6
β Drop-Inβ 99,999 In Stock
$0.89 / Unit
View Datasheet βSTM8L151G6U6 Maximum Ratings & Electrical Characteristics
| Core | STM8 8-bit CISC |
| Clock Speed | 16 MHz |
| Flash Memory | 32 KB (32K x 8) |
| SRAM | 2 KB |
| Data EEPROM | 1 KB |
| Supply Voltage | 1.8 V to 3.6 V |
| Package | 28-UFQFPN (4x4 mm) |
| I/O Pins | 41 |
| ADC | 12-bit, multiple channels |
| DAC | 12-bit |
| Comparators | 2 |
| RTC | Yes |
| LCD Driver | Yes |
| Communication Interfaces | USART, I2C, SPI |
| DMA | 4 channels |
| Halt Mode Current | 0.35 Β΅A |
| Operating Temperature | -40Β°C to +85Β°C |
| RoHS | Compliant |
STM8L151G6U6 Pin Configuration
| Pin 1 | PD0 β Port D0, general purpose I/O |
| Pin 2 | PD1 β Port D1, general purpose I/O |
| Pin 3 | NRST β Reset input, active low |
| Pin 4 | PA1 β Port A1, general purpose I/O |
| Pin 5 | PA2 β Port A2, general purpose I/O |
| Pin 6 | VSS β Ground |
| Pin 7 | VDD β Power supply |
| Pin 8 | PA3 β Port A3, general purpose I/O |
| Pin 9 | PA4 β Port A4, general purpose I/O |
| Pin 10 | PA5 β Port A5, general purpose I/O |
| Pin 11 | PA6 β Port A6, general purpose I/O |
| Pin 12 | PA7 β Port A7, general purpose I/O |
| Pin 13 | PB0 β Port B0, general purpose I/O |
| Pin 14 | PB1 β Port B1, general purpose I/O |
| Pin 15 | PB2 β Port B2, general purpose I/O |
| Pin 16 | PB3 β Port B3, general purpose I/O |
| Pin 17 | VSS β Ground |
| Pin 18 | VDD β Power supply |
| Pin 19 | PB4 β Port B4, general purpose I/O |
| Pin 20 | PB5 β Port B5, general purpose I/O |
| Pin 21 | PB6 β Port B6, general purpose I/O |
| Pin 22 | PB7 β Port B7, general purpose I/O |
| Pin 23 | PC0 β Port C0, general purpose I/O |
| Pin 24 | PC1 β Port C1, general purpose I/O |
| Pin 25 | PC2 β Port C2, general purpose I/O |
| Pin 26 | PC3 β Port C3, general purpose I/O |
| Pin 27 | PC4 β Port C4, general purpose I/O |
| Pin 28 | PC5 β Port C5, general purpose I/O |
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
STM8L151G6U6 is suitable for 6 applications: Portable Medical Devices, Wireless Sensor Nodes, Smart Meters, Industrial Control Systems, Consumer Electronics, Automotive Electronics.
Portable Medical Devices
The STM8L151G6U6 is ideal for portable medical devices such as glucose meters, pulse oximeters, and wearable health monitors. Its ultra-low-power Halt mode (0.35 Β΅A) extends battery life, while the 12-bit ADC and comparators enable precise sensor measurements. The device can operate from 1.8V to 3.6V, allowing direct battery connection. In a typical glucose meter, the MCU reads the sensor via the ADC, processes the data, and displays results on an LCD, all while consuming minimal power. The RTC ensures accurate time-stamping of measurements. The compact UFQFPN-28 package fits into small form factors, and the wide operating temperature range ensures reliable operation in various environments.
Recommended
Wireless Sensor Nodes
In wireless sensor networks, the STM8L151G6U6 serves as the central controller, managing sensor data acquisition, processing, and wireless transmission. Its low-power modes allow the node to sleep for extended periods, waking only to take measurements and transmit data via USART or SPI to a radio module. The 12-bit ADC accurately digitizes analog sensor outputs, while the DMA controller offloads data transfer, reducing CPU wake time. The device's 32 KB Flash provides ample space for communication protocols and sensor calibration data. With a supply voltage range of 1.8V to 3.6V, it can be powered by two AA batteries or a single lithium cell. The Halt mode current of 0.35 Β΅A ensures years of operation on a single battery charge.
Recommended
Smart Meters
The STM8L151G6U6 is well-suited for smart metering applications, including electricity, water, and gas meters. Its ultra-low-power operation is critical for battery-powered meters that must last 10+ years. The device's RTC provides accurate timekeeping for billing cycles, and the LCD driver can directly interface with segment LCDs to display consumption data. The 12-bit ADC and comparators enable precise measurement of analog sensor outputs, such as current transformers or flow sensors. The USART and SPI interfaces allow communication with external modems or PLC transceivers for remote data collection. The wide supply voltage range accommodates battery voltage variations, and the 32 KB Flash stores metering algorithms and calibration data.
Recommended
Industrial Control Systems
The STM8L151G6U6 can be used in industrial control systems for monitoring and control tasks. Its robust design, wide operating temperature range, and low power consumption make it suitable for remote I/O modules, process controllers, and sensor interfaces. The device's multiple communication interfaces (USART, I2C, SPI) allow easy integration with industrial networks. The 12-bit ADC and comparators enable accurate analog signal conditioning, while the DMA controller improves real-time performance. The 32 KB Flash provides ample space for control algorithms, and the 1 KB EEPROM stores configuration parameters. The device's low-power modes are beneficial for battery-backed systems, ensuring reliable operation during power outages.
Recommended
Consumer Electronics
The STM8L151G6U6 is used in various consumer electronics, including remote controls, smart home devices, and wearable gadgets. Its ultra-low-power consumption extends battery life in remote controls and wearables. The device's rich peripheral set, including timers, ADC, and communication interfaces, enables features like button scanning, LED control, and wireless communication. The compact UFQFPN-28 package allows for miniaturized designs. The device can operate from a coin cell battery (3V) and supports a wide voltage range, ensuring reliable operation as the battery discharges. The 32 KB Flash is sufficient for consumer applications, and the 1 KB EEPROM stores user preferences.
Recommended
Automotive Electronics
The STM8L151G6U6 is suitable for automotive applications such as body control modules, sensor interfaces, and diagnostic tools. Its wide operating temperature range (-40Β°C to +85Β°C) and low power consumption make it ideal for always-on systems. The device's robust communication interfaces (CAN, LIN via USART) enable integration with vehicle networks. The 12-bit ADC and comparators are used for sensor conditioning, while the RTC provides time-stamping for event logging. The 32 KB Flash stores application firmware, and the 1 KB EEPROM retains calibration data. The device's low-power modes are beneficial for reducing battery drain when the vehicle is off.
Recommended
Recommended Products Summary
Engineering reference data for STM8L151G6U6 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM8L151G6U3 | STM8L151G4U6 | STM8L152G6U6 |
|---|---|---|---|---|
| Package | 28-UFQFPN (4x4 mm) | 28-UFQFPN (4x4 mm) - same | 28-UFQFPN (4x4 mm) - same | 28-UFQFPN (4x4 mm) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Flash Memory | 32 KB | 32 KB | 16 KB | 32 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB |
| Data EEPROM | 1 KB | 1 KB | 1 KB | 1 KB |
| Operating Temperature | -40Β°C to +85Β°C | -40Β°C to +125Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C |
| LCD Driver | No | No | No | Yes |
| Halt Mode Current | 0.35 Β΅A | 0.35 Β΅A | 0.35 Β΅A | 0.35 Β΅A |
Key Differentiators
- Ultra-low-power Halt mode with 0.35 Β΅A current consumption (vs STM8L151G4U6)
- Wide operating temperature range (-40Β°C to +85Β°C) (vs STM8L151G6U3)
- Integrated LCD driver (vs STM8L152G6U6)
Design Notes
The STM8L151G6U6 operates from 1.8V to 3.6V. Use a 100 nF ceramic capacitor close to each VDD pin and a 1 Β΅F capacitor for bulk decoupling. For battery-powered designs, consider a low-dropout regulator to maintain stable voltage as the battery discharges. The device's low-power modes require careful configuration of the clock system; disable unused peripherals and clocks to achieve the specified 0.35 Β΅A Halt mode current.
The UFQFPN-28 package has an exposed pad on the bottom. Connect this pad to ground (VSS) for proper thermal dissipation and electrical grounding. Ensure the PCB land pattern matches the recommended dimensions in the datasheet (CD00240181). Use vias under the exposed pad to improve thermal transfer to the ground plane. Keep traces to the crystal and decoupling capacitors short to minimize noise.
When using the STM8L151G6U6, avoid floating unused I/O pins; configure them as outputs or enable internal pull-ups to reduce leakage current. The NRST pin has an internal pull-up, but an external 100 nF capacitor to ground is recommended for noise immunity. Ensure the supply voltage does not exceed 3.6V, as this can damage the device. For programming, use the SWIM interface with a suitable programmer like the ST-LINK.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive use, consider the STM8L151G6U3 with extended temperature range.
