company blog about ST STM8L151R6T6 Ultra-Low-Power 8-Bit MCU With Integrated EEPROM

ST STM8L151R6T6 Ultra-Low-Power 8-Bit MCU With Integrated EEPROM

Shenzhen Mingjiada Electronics Co., Ltd, as a senior distributor in the field of electronic components, has been supplying ST STM8L151R6T6 ultra-low-power 8-bit MCUs steadily for a long period of time.STM8L151R6T6 is popular in the fields of consumer electronics, industrial control, smart home and so on, thanks to its excellent energy efficiency ratio and integrated EEPROM features.

STM8L151R6T6 Product Overview and Technical Features
The STM8L151R6T6 is an ultra-low power 8-bit microcontroller featuring the advanced STM8 core architecture optimised for battery-powered and energy harvesting applications.The STM8L151R6T6 is available in a 64-pin QFP package and has an operating temperature range of -40°C to +85°C, making it suitable for industrial-grade applications.

Core performance parameters of the STM8L151R6T6:
CPU architecture: based on 16MHz STM8 core, supporting single-cycle 16x16 multiplication operations
Memory configuration: 32KB flash programme memory, 1KB data EEPROM, 2KB RAM
Power Management: 1.8V to 3.6V operating voltage range, multiple low-power modes (down to 350nA shutdown mode)
Peripheral Integration: Rich peripheral interfaces including SPI, I²C, USART, Timer, ADC and DAC
Package: 64-pin QFP package for easy PCB layout and soldering

The outstanding feature of STM8L151R6T6 is its integrated 1KB data EEPROM, which can support up to 100,000 erase/write cycles, providing a non-volatile data storage solution for system design without the need for external EEPROM chips, which saves BOM cost and simplifies circuit design.

STM8L151R6T6 Ultra-low Power Consumption and Power Management Technology
The STM8L151R6T6 uses ST's proprietary ultra-low-leakage process technology with innovative autonomous dynamic voltage regulation to provide unprecedented low-power performance. This STM8L151R6T6 features five configurable low-power modes that dynamically adjust power consumption levels based on application requirements.

Power consumption performance:
Run mode: as low as 150μA/MHz (typical)
Low-power run mode: 8.5μA (running at 32kHz)
Low-power wait mode: 3μA (preserves RAM and register contents)
Shutdown mode: 350nA (retains backup registers)
Wake-up time: only 4μs from shutdown mode

These features make the STM8L151R6T6 particularly suitable for battery-powered portable devices such as smartwatches, medical sensors, remote monitoring devices, etc., which can significantly extend the life of the device. Dynamic voltage regulation technology can adjust the power supply voltage in real time according to the CPU load, further optimising the energy efficiency ratio.

The STM8L151R6T6's rich peripheral interfaces and system integration support the connectivity needs of various application scenarios:

Communication interfaces:
2 SPI interfaces (master/slave mode, up to 8Mbps)
2 I²C interfaces (fast mode 400kHz supported)
2 USART interfaces (supports LIN master/slave mode)
1 IR interface (IrDA compatible)

Analogue peripherals:
12-bit ADC (up to 1Msps sampling rate, up to 16 channels)
2 x 12-bit DACs (with output buffering)
3 operational amplifiers (with configurable gain)
Analogue comparator (with programmable reference voltage)

Timing and Control:
16-bit advanced control timer (6 PWM outputs)
3 general-purpose 16-bit timers
1 Window Watchdog Timer
1 independent watchdog timer
Real-time clock (RTC) with calendar and alarm functions

These rich peripheral resources enable the STM8L151R6T6 to flexibly respond to a variety of embedded control needs, from simple logic control to complex analogue signal processing. In particular, the STM8L151R6T6's built-in RTC and EEPROM combination provides an ideal hardware platform for data logging applications.

Applications of the STM8L151R6T6
Consumer electronics field:
Smart home devices (thermostats, smart outlets)
Wearable devices (fitness trackers, smart watches)
Remote controls, wireless keyboards and mice
Electronic toys, game accessories

Industrial control field:
Sensor nodes, data collectors
Industrial remote controls, handheld terminals
Motor control, valve control
Smart meter (water meter, gas meter, electricity meter)

Medical electronics field:
Portable medical monitoring equipment
Disposable medical sensors
Drug storage temperature monitoring
Hearing aids, medical call systems

Automotive Electronics Field:
Body Control Modules (BCM)
Tyre Pressure Monitoring System (TPMS)

Car remote control keys
In-vehicle infotainment system auxiliary control

In these applications, the STM8L151R6T6's integrated EEPROM can be used to store device configuration parameters, user settings, calibration data, or operation logs, ensuring that data is not lost in the event of a power failure. Its ultra-low power consumption significantly extends battery life and reduces maintenance requirements.