ATTINY817-MFR. datasheet(80/492 Pages) MICROCHIP

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12.4

Offset

Name

Bit Pos.

0x00

RSTFR

7:0

UPDIRF

SWRF

WDRF

EXTRF

BORF

PORF

0x01

SWRR

7:0

SWRE

12.5

12.5.1

Reset Flag Register

All flags are cleared by writing a '1' to them. They are also cleared by a Power-on Reset, with the

exception of the Power-On Reset Flag (PORF).

Name:

RSTFR

Offset: 0x00

Reset:

0xXX

Property:

Bit

UPDIRF

SWRF

WDRF

EXTRF

BORF

PORF

Access

R/W

Reset

Bit 5 – UPDIRF: UPDI Reset Flag

This bit is set if a UPDI Reset occurs.

Bit 4 – SWRF: Software Reset Flag

This bit is set if a Software Reset occurs.

Bit 3 – WDRF: Watchdog Reset Flag

This bit is set if a Watchdog Reset occurs.

Bit 2 – EXTRF: External Reset Flag

This bit is set if an External reset occurs.

Bit 1 – BORF: Brownout Reset Flag

This bit is set if a Brownout Reset occurs.

Bit 0 – PORF: Power-On Reset Flag

This bit is set if a Power-on Reset occurs.

This flag is only cleared by writing a '1' it.

After a POR, only the POR flag is set and all other flags are cleared. No other flag can be set before a full

system boot is run after the POR.

12.5.2

Software Reset Register

ATtiny417/817

Datasheet Complete

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