EPCQ-L Serial Configuration Devices Datasheet

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ID 683710
Date 5/18/2018
Public
Document Table of Contents

Flag Status Register

Table 21.  Flag Status Register Bits
Bit Name Value Description
7 Write or Erase Controller14
  • 1=Ready
  • 0=Busy

Indicates whether one of the following operation is in progress:

  • Write Status Register
  • Write NVCR
  • Write Bytes
  • Erase
6 Erase suspend
  • 1=In effect
  • 0=Not in effect
Indicates whether an Erase operation has been or is going to be suspended.
Note: Status bits are reset automatically
5 Erase
  • 1=Failure or protection error
  • 0=Clear
Indicates whether an Erase operation has succeeded or failed.
4 Write
  • 1=Failure or protection error
  • 0=Clear
Indicates whether a Write Bytes operation has succeeded or failed; also an attempt to write a 0 to a 1 when VPP = VPPH and the data pattern is a multiple of 64 bits.
3 Reserved
2 Write suspend
  • 1=In effect
  • 0=Not in effect
Indicates whether a Write Bytes operation has been or will be suspended.
1 Protection
  • 1=Failure or protection error
  • 0=Clear
Indicates whether an Erase or Write Bytes operation has attempted to modify the protected array sector.
0 Addressing
  • 1=4-bytes addressing
  • 0=3-bytes addressing
Indicates the addressing mode used.
14 Write or erase controller bit = NOT write in progress bit.

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