USER MANUAL
TCM 410J
–
Transceiver Module
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TCM 410J User Manual | v2.3 | June 2022 | Page 11 / 46
2.2.2
Handling IOVDD and PINs in sleep mode
TCM 410J is designed for line-powered applications communicating over a serial interface
(UART). For some applications it might be desirable to put TCM 410J into sleep mode to
conserve energy while the device is not used.
As discussed in chapter 2.2.1. above, it is not recommended to supply IOVDD or connect
voltage to IOs if DVDD = 0 V (e.g. in any sleep mode or if VDD<VOFF). If the module is put
into deep sleep mode (i.e. with the serial command CO_WR_SLEEP, see chapter 2.7), then
it is important to cut IOVDD supply and not apply voltage on the IO pins (e.g. the UART in-
terface).
The example below illustrates how to control IOVDD using DVDD as controlling signal.
