Datasheet

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XMEGA B [DATASHEET]
8291B–AVR–01/2013
4.14.11 STATUS – Status register
 Bit 7 – NVMBUSY: Nonvolatile Memory Busy
The NVMBUSY flag indicates if the NVM (Flash, EEPROM, lock bit) is being programmed. Once an operation is started,
this flag is set and remains set until the operation is completed. The NVMBUSY flag is automatically cleared when the
operation is finished.
 Bit 7 - NVMBUSY: Nonvolatile Memory Busy
 Bit 6 – FBUSY: Flash Busy
The FBUSY flag indicates if a flash programming operation is initiated. Once an operation is started, the FBUSY flag is
set and the application section cannot be accessed. The FBUSY flag is automatically cleared when the operation is
finished.
 Bit 5:2 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to zero
when this register is written.
 Bit 1 – EELOAD: EEPROM Page Buffer Active Loading
The EELOAD flag indicates that the temporary EEPROM page buffer has been loaded with one or more data bytes. It
remains set until an EEPROM page write or a page buffer flush operation is executed. For more details, see “Flash and
EEPROM Programming Sequences” on page 388.
 Bit 0 – FLOAD: Flash Page Buffer Active Loading
The FLOAD flag indicates that the temporary flash page buffer has been loaded with one or more data bytes. It remains
set until an application, boot page write, or page buffer flush operation is executed. For more details, see “Flash and
EEPROM Programming Sequences” on page 388.
Bit 7 6 5432 1 0
+0x04 NVMBUSY FBUSY
– – – – EELOAD FLOAD
Read/Write R R R R R R R R
Initial Value 0 0 0 0 0 0 0 0