DA14580 w/SPI-Flash @ Boost Mode

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Last post
Wed, 2016-08-31 10:12
#1
Jun-ichi Tobe
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Last seen:4 months 2 weeks ago
Joined:2016-04-01 10:39
DA14580 w/SPI-Flash @ Boost Mode

Hello support,

Config:
DA14580 + SPI Flash
Boost Mode
Battery Voltage 1.8 to 2.5V

When booting system, DA14580 I/O voltage is set to 2.7V.
There is the difference between Battery voltage and IO voltage?
Are there any problems?

Do you have the recomend boot sequence?
(OTP boot --> Secondry boot loader, using P01_PADPWR_CTRL_REG (0x50003070),....)

Regards,

Jun-ichi

Device:
DA14580
Sat, 2016-09-03 03:57
Gotok (not verified)
Hi Tobe-san,

Hi Tobe-san,

Now I understood what problem is.

Absolute maximum rating of I/O port voltage of SPI flash is 2.3V at 1.8V(VDD+0.5V).

So you can set output voltage of GPIO port to VBAT1V rail with P01_PADPWR_CTRL_REG(0x50003070),

P2_PADPWR_CTRL_REG(0x50003072), P3_PADPWR_CTRL_REG(0x50003074) if you will use secondary

Boot loader.

Could you refer to UM-B-012 fro secondary boot loader?

Best Regards,

Katsuya

Wed, 2016-09-07 05:59
Jun-ichi Tobe
Offline
Last seen:4 months 2 weeks ago
Joined:2016-04-01 10:39
Katsuya-san

Katsuya-san

Thank you for your support!

Best regards,

Jun-ichi