S25FL008K0XMFI041 Datasheet, PDF (38/60 Pages) SPANSION – 8-Mbit CMOS 3.0 Volt Flash Memory with 104-MHz SPI (Serial Peripheral Interface) Multi I/O Bus

Data Sheet (Preliminary)
for a time duration of t_CE (See AC Electrical Characteristics on page 54.). While the Chip Erase cycle is in
progress, the Read Status Register instruction may still be accessed to check the status of the BUSY bit. The
BUSY bit is a 1 during the Chip Erase cycle and becomes a 0 when finished and the device is ready to accept
other instructions again. After the Chip Erase cycle has finished the Write Enable Latch (WEL) bit in the
Status Register is cleared to 0. The Chip Erase instruction will not be executed if any page is protected by the
Block Protect (CMP, SEC, TB, BP2, BP1, and BP0) bits (see Table 6.2, Status Register Memory Protection
(CMP = 0) on page 15).
Figure 7.25 Chip Erase Instruction Sequence Diagram
CS#
Mode 3
CLK ^{Mode 0}
SI
01234567
Mode 3
Mode 0
Instruction (C7h/60h)
SO
High Impedance
7.0.23
Erase / Program Suspend (75h)
The Erase/Program Suspend instruction 75h, allows the system to interrupt a Sector or Block Erase operation
or a Page Program operation and then read from or program/erase data to, any other sectors or blocks. The
Erase/Program Suspend instruction sequence is shown in Figure 7.26, Erase/Program Suspend Instruction
Sequence on page 39.
The Write Status Register instruction (01h) and Erase instructions (20h, 52h, D8h, C7h, 60h, 44h) are not
allowed during Erase Suspend. Erase Suspend is valid only during the Sector or Block erase operation. If
written during the Chip Erase operation, the Erase Suspend instruction is ignored. The Write Status Register
instruction (01h) and Program instructions (02h, 32h, 42h) are not allowed during Program Suspend.
Program Suspend is valid only during the Page Program or Quad Page Program operation.
The Erase/Program Suspend instruction 75h will be accepted by the device only if the SUS bit in the Status
Register equals to 0 and the BUSY bit equals to 1 while a Sector or Block Erase or a Page Program operation
is on-going. If the SUS bit equals to 1 or the BUSY bit equals to 0, the Suspend instruction will be ignored by
the device. A maximum of time of t_SUS (See AC Electrical Characteristics on page 54.) is required to suspend
the erase or program operation. The BUSY bit in the Status Register will be cleared from 1 to 0 within t_SUS
and the SUS bit in the Status Register will be set from 0 to 1 immediately after Erase/Program Suspend. For
a previously resumed Erase/Program operation, it is also required that the Suspend instruction 75h is not
issued earlier than a minimum of time of t_SUS following the preceding Resume instruction 7Ah.
Unexpected power off during the Erase/Program suspend state will reset the device and release the suspend
state. SUS bit in the Status Register will also reset to 0. The data within the page, sector or block that was
being suspended may become corrupted. It is recommended for the user to implement system design
techniques against the accidental power interruption and preserve data integrity during erase/program
suspend state.
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S25FL008K
S25FL008K_00_02 October 14, 2010