EN25S20A Datasheet, PDF (37/65 Pages) Eon Silicon Solution Inc. – 2 Megabit 1.8V Serial Flash Memory with 4Kbyte Uniform Sector

EN25S20A
Write Resume (30h)
Write Resume restarts a Write command that was suspended, and changes the suspend status bit in
the Suspend Status register (WSE or WSP) back to “0”.
The instruction sequence is shown in Figure 25. To execute a Write Resume operation, the host drives
CS# low, sends the Write Resume command cycle (30h), then drives CS# high. A cycle is two nibbles
long, most significant nibble first. To determine if the internal, self-timed Write operation completed, poll
the WIP bit in the Suspend Status register, or wait the specified time t_SE, t_HBE, t_BE or t_PP for Sector Erase,
Half Block Erase, Block Erase, or Page Programming, respectively. The total write time before suspend
and after resume will not exceed the uninterrupted write times t_SE, t_HBE, t_BE or t_PP. Resume to another
suspend operation requires latency time of 1ms.
The instruction sequence is shown in Figure 25.1 while using the Enable Quad Peripheral Interface mode
(EQPI) (38h) command.
Figure 25. Write Resume Instruction Sequence Diagram
Figure 25.1 Write Suspend/Resume Instruction Sequence in QPI Mode
This Data Sheet may be revised by subsequent versions
37
or modifications due to changes in technical specifications.
©2014 Eon Silicon Solution, Inc.,
Rev. A, Issue Date: 2014/01/16
www.eonssi.com