Spotpear Raspberry Pi 3B/4B/ZERO to pico onboard RP2040 RTC also power control UPS board
https://www.spotpear.com/index.php/in...
Overview
Power Management HAT(B) is a power management control board for Raspberry Pi, which can provide a set of extremely powerful power management for Raspberry Pi, such as timing switch machine, measuring working voltage and current, etc. The load transient response function enables fast switching among multiple power supplies.
Features
Onboard MCU (RP2040), powerful performance, easy to use.
The onboard RTC clock chip (PCF85063) can provide precise time control.
The on-board buck-boost DC-DC chip (MP28167-A) provides fast load transient response.
The on-board lithium battery interface provides power supply anti-reverse connection
and anti-backflow mechanism to fully ensure the safety of the circuit.
The onboard RP2040 pin interface is compatible with the Raspberry Pi Pico standard interface,
and can be equipped with a PICO expansion board.
The onboard custom button can be used as the power button to realize the power-on,
software shutdown and forced shutdown of the Raspberry Pi.
The input power voltage can be detected, the working current can be detected,
and the power can be cut off immediately to ensure the working life of the lithium battery.
Specifications
Main control chip: RP2040
Communication interface: UART + GPIO
Download interface: USB + SWD (Debug)
Communication baud rate: default 115200bps (other baud rates can be programmed)
Power supply mode: USB interface or PH2.0 interface
USB interface voltage: 5V
PH2.0 interface voltage: 3.3-4.2V (3.7V lithium battery)
Built-in circuit: battery anti-reverse connection circuit, anti-backflow circuit,
current and voltage detection circuit
Product size: 56.5mm x 65mm
Fixed hole diameter: 3.0mm