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title: nPZero G1S
description: Landing page for nPZero G1S or nPZG1S
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 [Home](https://nanopowersemi.com/?hsLang=en)\> Products \> nPZero G1S

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![Main View](https://nanopowersemi.com/hubfs/qfn32%20top%20view%2025%20v2.png-1.jpg)

QFN32 5x5mm

![QFN32 Thumbnail](https://nanopowersemi.com/hubfs/qfn32%20top%20view%2025%20v2.png-1.jpg) ![WLCSP34 Thumbnail](https://nanopowersemi.com/hubfs/WLCSP34%20top%20view%2025v2.png-1.jpg)

 

## nPZG1S

### Power Saving IC

[Where to buy](https://nanopowersemi.com/where-to-buy?hsLang=en)

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Description

Key Specifications and Block Diagram

Documentation

DevKits

Support

### Product Overview

The **nPZG1S** is a Power Saving IC (PSIC) targets power-constrained sensor applications, reducing system power by autonomously managing sensor communication and selectively powering up the MCU and sensors only when needed.

The nPZG1S can autonomously manage up to **four I²C or SPI sensors**, polling them at defined intervals and waking the MCU only when configurable thresholds or events require system attention. Integrated power switches, **128-bytes SRAM**, an **6-bit ADC**, **internal oscillator** provide the functionality needed to build smart sensing systems while keeping energy consumption exceptionally low.

With operation from **1.7–3.6 V** and an idle current of just **90 nA**, the nPZG1S is particularly well suited to long-life battery, energy-harvesting, tracking, metering, condition monitoring applications amongst many other power constrained sensing devices.

### Main Features

- **Autonomous management of up to 4 sensors** 
    - Polling of sensors with threshold-based wake-up triggers
    - Communication over I²C or SPI
    - Flexible I/O pins for interrupt inputs or trigger outputs
- **Ultra-low-power standalone operation** 
    - Power-cycling: turns off MCU and sensors when they are not needed
- **128-bytes SRAM** 
    - Initialization commands for sensors
    - General purpose user data
- **Integrated power switches for the MCU and 4 sensors** 
    - Can do control external switches for higher currents
- **Supports MCU via I2C** 
    - Configuration via I2C commands
    - nPZero IC wakes up the MCU when required
- **Optional crystal oscillator** 
    - Improve time accuracy
    - Programmable clock output
    - External 32.768 kHz crystal for higher precision timing

### Key Specifications

| Supply voltage | 1.7 - 3.6 V |
| --- | --- |
| Idle current @ 3.0V and 22°C | 100 nA |
| Polling current @ 3.0V and 22°C | 1.0 µA |
| Host switch current | 10 mA |
| Sensor switch current (×4) | 1 mA |
| I²C frequency | 100 kHz |
| SPI frequency | 100 kHz |
| Temperature range | -20°C to +70°C |
| Package options | QFN32, 5.00×5.00 mm; WLCSP34, 2.50×2.50 mm |

### Block Diagram

![nPZG1S Block Diagram](https://nanopowersemi.com/hubfs/NPZ-G1S-REV02-Block-Diagram.svg)

### Documentation

Access the official product documentation page for datasheet, one-page leaflet (PID), application notes.

[Download datasheet](https://dev.nanopowersemi.com/docs/products/npzero/docs) [Download one-pager](https://dev.nanopowersemi.com/docs/products/npzero/docs) [Download appnotes](https://dev.nanopowersemi.com/docs/appnotes/)

### Development Kits

Get started quickly with official devkit, STAMP board, IC samples, nPZero Configurator PC software and sample code.

[![nPZero G1S Stamp](https://nanopowersemi.com/hubfs/G1S%20Stamp%20HS.png)](https://dev.nanopowersemi.com/docs/products/npzero/stamp/)

The Stamp is designed with the necessary circuitry and components to be implemented with minimal effort in prototypes. Simply solder on the nPZero Stamp, and you have a system with nPZero power-saving capabilities.

The nPZero G1S Development Kit (DevKit) provides a powerful solution for testing the power reduction capabilities of the nPZero IC in embedded systems.  
The DevKit is designed to help developers assess the performance of the nPZero G1S power-saving IC in a range of IoT applications, and provide an affordable and flexible way to try out new concepts and build prototypes, and is compatible with a wide range of MCU's and sensors.

[![nPZero G1S Development Kit](https://nanopowersemi.com/hubfs/Devkit%20HS.png)](https://dev.nanopowersemi.com/docs/products/npzero/devkit/)

Click on the images above for more information.

### Technical Support

Access our technical support team, official GITHUB, API libraries, and direct submit tickets for technical inquiries.

[Request support](https://nanopowersemi.com/support?hsLang=en)

 

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