Epson builds clocks the size of grain of rice

Epson has built real-time clock modules that are no bigger than a grain of rice.

Measuring a maximum of only 3.4mm x 1.7mm x 1.0mm, Epson claims the devices are the world’s smallest real-time clock modules with a built-in crystal unit.

The clocks will find applications in all manner of electrical devices, ranging from digital cameras to health care products to factory automation equipment.

Not only will the micro-clocks make it easier for manufacturers to create even smaller devices, but they’ll draw less power, too. The clock will draw as little as 0.22A while on standby.

Epson has managed to shrink the size of the clocks by sealing the crystal unit in the same moulded package as an oscillation circuit, rather than housing them separately.

“Epson’s culture of innovation has delivered a product that can help our customers meet strong demand for thin, space-saving, low-power portable products,” said Stefan Hartmann, senior manager of Epson’s Quartz division. “Dramatically reducing the energy consumption of all our products, while improving quality, is one of the commitments set out in Epson’s Environmental Vision 2050”.