STM8L151C8T6
Brand: ST
STM8L151C8T6 is a 8-bit STM8 microcontroller from STMicroelectronics, designed for BLHeli_S drone ESCs, battery management systems, and cost-sensitive embedded control. Superb Automation supplies genuine STM8L151C8T6 with full traceability, competitive pricing, and fast global delivery — supporting prototype to production volumes for drone, robotics, and industrial customers worldwide.
Product Specifications
STM8L151C8T6 — 64 KB Flash Ultra-Low-Power STM8L MCU in LQFP-48 with DMA for Advanced Drone BMS and Sensor Hubs
The STM8L151C8T6 is the high-end STM8L151 ultra-low-power MCU, delivering 64 KB Flash, 4 KB SRAM, 2 KB EEPROM, 4-channel DMA, 12-bit ADC (25 channels), 12-bit DAC, dual USARTs, SPI, and I²C in LQFP-48. Operating from 1.8–3.6V with 0.35 µA Halt mode, this is the most capable STM8L device without an LCD controller — ideal for full-featured drone BMS controllers with lifetime battery analytics, multi-sensor aggregation nodes with DMA-driven data acquisition, and battery-powered drone payload controllers requiring maximum Flash, SRAM, and EEPROM in a compact LQFP package.
Part Number Decoded — Field by Field
| Field | Value | Meaning |
|---|---|---|
| STM8 | Product Family | STMicroelectronics 8-bit MCU |
| L | Product Type | Ultra-Low-Power — 1.8–3.6V |
| 151 | Sub-Family | STM8L151 — Premium low-power with DMA, max EEPROM |
| C | Pin Count | 48 pins (LQFP-48) |
| 8 | Flash Size | 64 KB |
| T | Package | LQFP |
| 6 | Temperature Range | −40°C to +85°C |
Quick Specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Part Number | STM8L151C8T6 |
| Core | STM8 (8-bit, 16 MHz) |
| Flash / SRAM / EEPROM | 64 KB / 4 KB / 2 KB |
| Package | LQFP-48 (7×7 mm, 0.5 mm pitch) |
| Supply Voltage | 1.8V – 3.6V |
| Temperature | −40°C to +85°C |
| GPIO | 41 |
| ADC | 1× 12-bit, 25 channels |
| DAC | 1× 12-bit |
| DMA | 4-channel |
| Timers | 5× 16-bit |
| Communication | 2× USART, 1× SPI, 1× I²C |
| Power | 0.35 µA Halt, 175 µA/MHz Run, 0.9 µA w/ RTC |
| Debug | SWIM |
Product Overview
The STM8L151C8T6 is the flagship of the STM8L151 subfamily — combining the largest memory configuration (64 KB Flash, 4 KB SRAM, 2 KB EEPROM) with the 4-channel DMA controller and rich analog peripherals (25-ch 12-bit ADC, 12-bit DAC) in a production-friendly LQFP-48 package. This device represents the pinnacle of ST's 8-bit ultra-low-power offering, providing an MCU that can run complex BMS algorithms with lifetime battery analytics while consuming just 0.35 µA in sleep.
The 2 KB EEPROM is the largest in any STM8 device — enabling storage of complete battery lifecycle data: serial number, manufacturing date, chemistry parameters, calibration curves, cycle history (100+ cycles), capacity fade trend, and temperature exposure logs. Combined with the DMA-driven 25-channel ADC, the L151C8 can autonomously scan a 12S battery pack at 100 Hz while the CPU remains in low-power sleep — waking only to run the SOH estimation algorithm once per second.
Key Features & Benefits
2 KB EEPROM — Complete Battery Lifecycle Storage
With 2,048 bytes of true EEPROM (300K write cycles), the L151C8 can store a battery's entire operational history: manufacturing data (200 bytes), calibration coefficients (400 bytes), 200 charge/discharge cycle records (1,200 bytes), and firmware update logs (448 bytes). This enables "battery passport" functionality — a complete, auditable history of every battery pack from factory to retirement.
4-Channel DMA with 12-Bit ADC — Autonomous 25-Channel Scanning
The DMA can sequence through all 25 ADC channels at up to 1 MHz sample rate, depositing results into a circular SRAM buffer — all while the CPU remains in Wait or Low-Power Run mode. This enables continuous cell monitoring at 0.9 µA average current (RTC wake every second to process the buffer).
64 KB Flash + 4 KB SRAM — Space for Sophisticated BMS Algorithms
The large memory budget accommodates Coulomb-counting state-of-charge estimation, Kalman-filter-based SOC fusion, impedance-based SOH estimation, cell-balancing algorithms, and CAN/UART communication stacks — all within a single STM8L chip.
Target Applications
Professional Drone Smart Battery with Battery Passport
A complete smart-battery module for 6S–12S professional drone packs: cell monitoring, SOC/SOH estimation, cycle counting, temperature tracking, and DroneCAN communication — all stored in the onboard 2 KB EEPROM. Provides a verifiable battery history for regulatory compliance and fleet management.
Autonomous Environmental Sensor Payload
The DMA continuously samples 25 analog and digital sensors (temperature, humidity, pressure, gas, particulate, light, vibration) at 100 Hz into a 4 KB SRAM buffer. The CPU processes data in batches once per second, then sleeps — achieving <5 µA average consumption for solar/battery-powered autonomous operation.
Battery-Powered Drone Telemetry Logger
Records flight telemetry (voltage, current, altitude, GPS) to the 2 KB EEPROM ring buffer during flight, then transmits stored data wirelessly after landing — enabling post-flight analysis without an onboard SD card or flash chip.
Frequently Asked Questions
STM8L151C8 vs. STM8L052C6 — which is the better value?
The L052C6 costs ~30% less but offers: 32 KB Flash (vs. 64 KB), 2 KB SRAM (vs. 4 KB), 256 bytes EEPROM (vs. 2 KB), and no DMA. The L151C8 justifies its premium through double Flash, double SRAM, 8× larger EEPROM, and the DMA controller — features that eliminate the need for external memory chips and reduce CPU power consumption in sensor-scanning applications. For BMS designs needing battery lifecycle storage (2 KB EEPROM) or autonomous DMA-driven ADC scanning, the L151C8 is the clear choice.
Does the L151C8T6 support CAN bus?
No. No STM8L device includes a CAN controller. For CAN connectivity on an ultra-low-power platform, you have two options: (1) Use the L151C8 with an external SPI-to-CAN bridge (MCP2515 + transceiver), or (2) Use the STM8S207/208 Performance Line (which has CAN but consumes more power — mA-level sleep vs. µA-level). The choice depends on whether CAN or ultra-low-power is the higher priority for your application.
Ordering Information
| Orderable Part Number | Package | Packaging | Temperature |
|---|---|---|---|
| STM8L151C8T6 | LQFP-48 (7×7 mm, 0.5 mm pitch) | Tray | −40°C to +85°C |
| STM8L151C8T6TR | LQFP-48 | Tape & Reel | −40°C to +85°C |
| STM8L151G6U6 | UFQFPN-28 (4×4 mm) | Tray | −40°C to +85°C |
Design Resources
- Datasheet (DS6008): STM8L151C8 / STM8L152C8 — Ultra-low-power MCU with 64 KB Flash, DMA, 2 KB EEPROM, LQFP-48 package data.
- Reference Manual (RM0031): STM8L05x/15x — Complete register documentation including DMA controller and advanced power management.
- Application Note AN3262: STM8L Low-Power Modes — Power optimization strategies with DMA-in-Wait mode configurations.
- Application Note AN3116: STM8L DMA — Step-by-step DMA configuration for ADC, USART, and timer-triggered transfers.
- STM8CubeMX: Pinout configurator with DMA channel-to-peripheral mapping and power estimator.
- STVD + COSMIC: Free IDE with STM8L target and DMA example projects.
Request a Quote
SUPERB Automation supplies genuine STMicroelectronics STM8L151C8T6 MCUs with full traceability and batch-level QA documentation. With 64 KB Flash, 4 KB SRAM, 2 KB EEPROM, DMA, and 25-channel 12-bit ADC — all at 0.35 µA Halt — the STM8L151C8T6 is the definitive 8-bit MCU for professional drone smart batteries requiring lifetime data storage, autonomous sensor scanning, and years of battery-powered operation. Whether you need prototype quantities for ESC firmware development or production volumes for drone BMS and PDB controller manufacturing, we source through verified channels with competitive lead times. Contact us with your target quantity, delivery date, and any special packaging or marking requirements — we'll respond with a detailed quotation within 24 hours.