BMP561 Series

The newly released high-integration and high-precision single-cell battery fuel gauge is designed specifically for the battery metering market. Based on the Arm® Cortex®-M0+ core, it features built-in programmable flash memory and supports both lithium-ion and lithium-polymer battery packs. Additionally, it supports SHA-256 authentication for enhanced security and parallel batteries for increased capacity.

Performance

Core

  • Arm® Cortex®-M0+

Memory

  • Flash: 64KB
  • SRAM: 8KB

Operating Conditions

  • Operating Voltage: 2V ~ 5.5V
  • Operating Temperature: -40℃ ~ 85℃

Power Consumption

  • Normal Mode: 60μA @ 25°C
  • Sleep Mode: 18μA @ 25°C
  • Deep Sleep Mode: 8μA @ 25°C
  • Shutdown Mode: 0.5μA @ 25°C

1mΩ current sensing resistor

Temperature sensor with NTC thermistor measurement

16-bit ADC ×2

  • Voltage Accuracy: 3mV @ 25℃
  • Current Accuracy: 0.5% @ -20℃ ~ 60℃

Communication Interfaces

  • I²C (100/400kHz), HSC, and UART 

Robust ESD Protection

  • HBM: ±6500V
  • CDM: ±2000V
  • Latch-up: 200mA

Algorithm

  • SHA-256 

Package

  • WLCSP12/DFN12/QFN16 

Selection Tools

All Products

Core

Frequency(MHz)

Code FLASH(KB)

SRAM(KB)

I/Os

Voltage(V)

Advanced TMR(16bit)

Data FLASH(KB)

IWDT

WWDT

Basic TMR(18-bit)

ADC 16-bit Cell

CADC Channels

I2C

VADC Channels

UART

HSC

EXIT

Package

SHA256

Compare
Part No.
Core
Frequency(MHz)
Code FLASH(KB)
SRAM(KB)
I/Os
Voltage(V)
Advanced TMR(16bit)
Data FLASH(KB)
IWDT
WWDT
Basic TMR(18-bit)
ADC 16-bit Cell
CADC Channels
I2C
VADC Channels
UART
HSC
EXIT
Package
SHA256

Documentation

Format Size
BMP561 Datasheet Data Sheet V1.0 pdf 1.65 MB February 27, 2025
BMP561 User Manual User Manual V1.0 pdf 2.31 MB February 27, 2025
AN1080_APM32_APM32 Series Tool Chain User Manual Application Note V1.1 pdf 1.21 MB October 28, 2022
AN1090_APM32_TSC Touch Module Application Note V1.0 pdf 1.51 MB April 19, 2023
AN1093_APM32_Eclipse Development Tutorial under APM32 Arm MCU Windows System Application Note V1.0 pdf 3.15 MB July 13, 2023
AN1095_APM32_USB Device Library Application Note Application Note V1.0 pdf 1.15 MB August 30, 2023
BMP561 User Guide User Guide V1.0 pdf 158.45 KB September 30, 2025
BMP561 EVM Schematic Diagram Development Board Schematic V1.0 pdf 80.84 KB May 19, 2025
GEEHY-LINK User Guide Development Tool Manual V1.3 zip 3.27 MB December 08, 2023
BMP561 PC Software User Guide Development Tool Manual V1.0 pdf 158.45 KB September 30, 2025
BMP561 EVM User Manual Development Board Manual V1.0 pdf 1.06 MB May 19, 2025

Design Resources

Hardware Development Tools

Product
BMP561 EVM Development Board
BMP561 Communication Box Mass Production Tool

Software Development Tools

Format Size
BMP561_SDK SDK V1.0.1 zip 3.09 MB May 28, 2025
BMP561 Algorithm Project Demo - pdf 158.45 KB September 30, 2025
BMP561 PC Software Upper Computer Software - pdf 158.45 KB September 30, 2025
BMP561_DFP pack Pack V1.0.1 pack 763.98 KB May 28, 2025
AI Assistant