The Arducam HM01NB0 is an ultralow power CMOS Image Sensor that enables the integration of an “Always On” camera for computer vision applications such as gestures, intelligent ambient light and proximity sensing, tracking and object identification. The unique architecture of the sensor allows the sensor to consume very low power of <2mW at QVGA 30FPS.

We've also turned this sensor into an SPI camera for RP2040 & Arduino boards.

Ultralow Power Image Sensor (ULPIS) designed for Always On vision devices and applications
High sensitivity 3.6µ BrightSenseTM pixel technology
320 x 320 active pixel resolution with support for QVGA window, vertical flip and horizontal mirror readout
Programmable black level calibration target, frame size, frame rate, exposure, analog gain (up to 8x) and digital gain (up to 4x)
Automatic exposure and gain control loop with support for 50 / 60Hz flicker avoidance
Flexible 1bit, 4bit, and 8bit video data interface with video frame and line sync
Motion Detection circuit with programmable ROI and detection threshold with digital output to serve as an interrupt
On-chip self oscillator
I2C 2-wire serial interface for register access
High CRA for low profile module design

Specifications:

Active Pixel Array: 320 x 320
Pixel Size: 3.6 µm x 3.6 µm
Full Image Area: 1152 µm x 1152 µm
Diagonal (Optical Format): 1.63 mm (1/11″)
Color Filter Array: Monochrome and Bayer
Scan Mode: Progressive
Shutter Type: Electronic Rolling Shutter
Frame Rate: 51 fps @ 320 x 320, 60 fps @ 320 x 240 (QVGA)
CRA (maximum): 30º
Supply Voltage: Analog 2.8 V, Digital 1.5V (Internal LDO: 1.5V – 2.8V), I/O 1.5 – 2.8V
Input Reference Clock: 3 – 50 MHz
Serial Interface (I2C): 2-wire, 400 KHz max.
Video Data Interface: 1b, 4b, with frame/line SYNC, 8b is not supported.
Output Clock Rate MAX: 50 MHz for 1bit, 12.5 MHz for 4bit
Est. Power Consumption (include IO with 5pF load): QVGA 60FPS (Typical) <4 mW, QVGA 30FPS (Typical) <2 mW, QQVGA 30FPS (Typical) 670 µW