P9222-R/RN Datasheet

© 2019-2022 Renesas Electronics Corporation

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May 5, 2022

8.6.6 GP2 Pin

The GP2 pin is assigned as a digital input. If GP2 is asserted high, the P9222-R/RN will access an external EEPROM on the I2C bus and load

customer configuration (FOD parameters, Vout, Ilim, and etc) data. If GP2 is asserted Low (default mode), the P9222-R/RN will load default

configuration data from an internal NVM (OTP).

Figure 29. GP2 Pin External Connections for External EEPROM Selection

8.7 Low-Power Ping Detection Operation

Once charging has completed, the wireless power connection to the Tx can be ended using an End Power Transfer (EPT) packet to save power

and reduce over heating of the device. The P9222-R/RN can be used to notify the host application processor that it is still on the charging pad

by using the PDETB and PDET_RC pins. The PDETB pin should be externally pulled up and will be held LOW as long as Tx ping pulses are

detected. The RC connected to the PDET_RC pin should be selected based on the expected ping time interval of the Tx. To prevent the P9222-

R/RN from waking the AP prematurely during Ping Detect mode, the RC values should be selected to hold the PDETB pin LOW until a few

hundred milliseconds after the expected ping interval from the Tx.

Figure 30. Ping Detection – Typical Application Schematic Components and Connections