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ABOV Semiconductor Co., Ltd.
13.11 Register Description for Reset Operation
RSTFR (Reset Flag Register): E8H
Initial value: 80H
Power-On Reset flag bit. The bit is reset by writing ‘0’ to this bit.
External Reset (RESETB) flag bit. The bit is reset by writing ‘0’ to this bit or by Power-
On Reset.
Watch Dog Reset flag bit. The bit is reset by writing ‘0’ to this bit or by Power-On Reset.
Low Voltage Reset flag bit. The bit is reset by writing ‘0’ to this bit or by Power-On
Reset.
NOTE)
1. When the Power-On Reset occurs, the PORF bit is only set to “1”, the other flag (WDTRF) bits are all
cleared to “0”.
2. When the Power-On Reset occurs, the EXTRF bit is unknown, At that time, the EXTRF bit can be set to
“1” when External Reset (RESETB) occurs.
3. When the Power-On Reset occurs, the LVRF bit is unknown, At that time, the LVRF bit can be set to “1”
when LVR Reset occurs.
4. When a reset except the POR occurs, the corresponding flag bit is only set to “1”, the other flag bits are
kept in the previous values.
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