STM8L052C6T6
Brand: ST
STM8L052C6T6 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 STM8L052C6T6 with full traceability, competitive pricing, and fast global delivery — supporting prototype to production volumes for drone, robotics, and industrial customers worldwide.
Product Specifications
STM8L052C6T6 — 32 KB Flash Ultra-Low-Power STM8L MCU in LQFP-48 for Drone BMS and Multi-Sensor Nodes
The STM8L052C6T6 is a mid-range ultra-low-power STM8L MCU featuring the 16 MHz STM8 core, 32 KB Flash, 2 KB SRAM, 256 bytes EEPROM, and 0.35 µA Halt-mode current in a versatile LQFP-48 package. With 41 GPIOs, a 12-bit ADC with 25 channels, 12-bit DAC, dual USARTs, SPI, and I²C operating from 1.8–3.6V, this device excels in multi-cell drone BMS controllers with LCD drive capability, comprehensive sensor aggregation nodes, and battery-powered drone peripherals requiring rich analog I/O without sacrificing ultra-low-power operation.
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 |
| 052 | Sub-Family | STM8L052 — Low-power with rich analog |
| C | Pin Count | 48 pins (LQFP-48) |
| 6 | Flash Size | 32 KB |
| T | Package | LQFP |
| 6 | Temperature Range | −40°C to +85°C (industrial) |
Quick Specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Part Number | STM8L052C6T6 |
| Core | STM8 (8-bit, 16 MHz) |
| Flash / SRAM / EEPROM | 32 KB / 2 KB / 256 bytes |
| Package | LQFP-48 (7×7 mm, 0.5 mm pitch) |
| Supply Voltage | 1.8V – 3.6V |
| Temperature | −40°C to +85°C |
| GPIO | 41 (up to 16 mA) |
| ADC | 1× 12-bit, 25 channels |
| DAC | 1× 12-bit output |
| Timers | 4× 16-bit (2 GP, 1 basic, 1 RTC) |
| Communication | 2× USART, 1× SPI, 1× I²C |
| Power | 0.35 µA Halt, 175 µA/MHz Run |
| Debug | SWIM |
Product Overview
The STM8L052C6T6 in LQFP-48 provides the richest analog peripheral set in the STM8L052 Value Line: a 25-channel 12-bit ADC (the highest channel count in any STM8L device of this class), a 12-bit DAC for analog output, and 41 GPIOs — all while maintaining the STM8L family's legendary 0.35 µA Halt-mode current. The 32 KB Flash and 2 KB SRAM provide comfortable headroom for complex BMS and sensor aggregation firmware.
The 25-channel ADC enables direct connection of up to 12 series LiPo cells (via voltage dividers) plus pack current, multiple temperature sensors, and reference channels — building a complete 12S BMS monitor without analog multiplexers. The 12-bit DAC can generate programmable reference voltages for op-amp comparator thresholds, charge-voltage setpoints, or sensor excitation — eliminating external DAC ICs from the BOM.
Key Features & Benefits
25-Channel 12-Bit ADC — Industry-Leading Analog Channel Density
No other 8-bit MCU in this price tier offers 25 analog input channels. This enables direct connection of 12 cell-voltage dividers, pack current sensor, 4 temperature sensors, 2 reference channels, and 6 spare inputs — all without analog multiplexers. Each channel achieves 12-bit resolution (0.8 mV at 3.3V) with <2 LSB INL, suitable for ±5 mV cell voltage measurement accuracy.
12-Bit DAC — Analog Output Without External Components
The integrated 12-bit DAC generates programmable analog voltages (0–VREF, 0.8 mV steps) for analog comparator references, charge-current setpoints, or sensor excitation. Saves $0.20–0.50 vs. external DAC or digital potentiometer.
Ultra-Low-Power with Rich Peripherals — No Compromise
Despite the large analog peripheral set, the L052C6 maintains the same 0.35 µA Halt, 175 µA/MHz Run power profile as smaller STM8L devices — the analog blocks are power-gated and consume zero current when disabled.
Target Applications
12S Drone BMS with Analog Self-Test
Monitors 12 cell voltages directly, measures pack current, and uses the DAC to generate self-test voltages for ADC health validation. Communicates pack status to the flight controller via USART at 10 Hz. The 256-byte EEPROM stores calibration coefficients and cycle history.
Multi-Sensor Drone Telemetry Aggregator
Aggregates data from up to 25 analog sensors (temperature, pressure, light, strain gauges, current shunts) plus I²C digital sensors. The 12-bit ADC provides high-resolution measurements, and the DAC can generate sensor excitation voltages for bridge-type sensors (strain gauges, pressure sensors).
Battery-Powered Environmental Monitoring Node
Combines 25-channel analog sensing, dual USARTs (GPS + LoRa radio), and ultra-low-power sleep — enabling a solar/battery-powered remote environmental monitoring drone payload that operates autonomously for months.
Frequently Asked Questions
How does STM8L052C6 compare to STM8L151C8?
The STM8L151C8T6 (also LQFP-48) offers 64 KB Flash and 4 KB SRAM — double the L052C6's 32 KB/2 KB. The L151 also provides a DMA controller (absent on L052) for autonomous ADC-to-memory transfers, and a larger 2 KB EEPROM (vs. 256 bytes). Choose the L052C6 for cost-sensitive designs where 32 KB Flash suffices; choose the L151C8 when more memory and DMA are needed.
Can the STM8L052C6 DAC be used as a PWM-to-analog replacement?
Yes. The 12-bit DAC provides a true buffered analog voltage output (rail-to-rail, 1 kΩ / 50 pF drive capability) — superior to filtered PWM for applications needing low-noise, glitch-free analog signals such as op-amp comparator thresholds or sensor excitation voltages.
Ordering Information
| Orderable Part Number | Package | Packaging | Temperature |
|---|---|---|---|
| STM8L052C6T6 | LQFP-48 (7×7 mm, 0.5 mm pitch) | Tray | −40°C to +85°C |
| STM8L052C6T6TR | LQFP-48 | Tape & Reel | −40°C to +85°C |
| STM8L052R8T6 | LQFP-64 (10×10 mm, 0.5 mm pitch) | Tray | −40°C to +85°C |
Design Resources
- Datasheet (DS9512): STM8L052C6 — Ultra-low-power MCU with 32 KB Flash, 12-bit ADC/DAC, LQFP-48 pinout.
- Reference Manual (RM0031): STM8L05x/15x — Register documentation for all peripherals including ADC, DAC, and DMA (for L15x variants).
- Application Note AN3262: STM8L Low-Power Modes — Power consumption data and mode configuration guide.
- STM8CubeMX: Pin configurator with ADC/DAC assignment and low-power estimation.
- STVD + COSMIC: Free IDE with STM8L support.
Request a Quote
SUPERB Automation supplies genuine STMicroelectronics STM8L052C6T6 ultra-low-power MCUs with full traceability and batch-level QA documentation. With a 25-channel 12-bit ADC and 12-bit DAC in LQFP-48, the STM8L052C6T6 delivers unmatched analog density for drone BMS and multi-sensor nodes — all at 0.35 µA sleep current. 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.