LPC8N04 How does one enter Battery-off mode?

[raven_coda]

The user guide mentions "Additionally the chip can be put into the Battery-off mode, which reduces current to nA levels."

But it never states how to enter battery-off mode. I tried setting PCON:VBAT to 1 but that didn't have the intended result.

Does anyone know how to use this feature? I'd like to have the device enter battery-off mode until it receives an NFC signal.

[ZhangJennie]

HI

The LPC8N04 platform accepts power from two different sources: external power supply pin VDDBAT( domain VBAT) and built-in NFC/RFID (domain VNFC). PSWBAT and PSWNFC are power switches

ZhangJennie_0-1659599902083.png

We can control PATAT for it

ZhangJennie_1-1659599941332.png

Hope this helps

Jun Zhang