Typical Applications; Ee895 Connected To Usb Interface; Ee895 In Battery Powered Devices - E+E Elektronik EE895 User Manual

3.7

Typical Applications

3.7.1

EE895 Connected to USB Interface

Fig. 11 Example USB Interface
Pin 7 - ISEL is not connected → the EE895 features UART interface.
VCC_EM is connected to the nominal 5 V from USB, the VCC_IO and EN are connected to 3.3 V
voltage regulator.
The host can read the values at any time, pin 6 - RDY is not used.
3.7.2

EE895 in Battery Powered Devices

Fig. 12 Example battery powerd devices
Pin 7 - ISEL is connected to the ground → the EE895 features I
VCC_EM is supplied by a low ESR super-capacitor and VCC_IO is connected to a typical low drop
3.3 V regulator.
The I C host enables the EE895 with pin 3 - EN.
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By checking the status of pin 6 - RDY (pulled up), the host can read the data as soon as available. After
reading the data, EE895 can be disabled with pin 3.
User Manual EE895 Miniature Sensor Module for CO , T and p
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C interface.
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