GD25Q32CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash
http://www.elm-tech.com
Page Program cycle is in progress, the Status Register may be read to check the value of the Write In Progress
(WIP) bit. The Write In Progress (WIP) bit is 1 during the self-timed Page Program cycle, and is 0 when it is
completed. At some unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset.
A Fast Page Program (FPP) command is not executed when it is applied to a page protected by the Block
Protect (BP4, BP3, BP2, BP1, BP0).
Figure 20. Fast Page Program Sequence Diagram
7.17. Sector Erase (SE) (20H)
The Sector Erase (SE) command is used to erase all the data of the chosen sector. A Write Enable (WREN)
command must previously have been executed to set the Write Enable Latch (WEL) bit. The Sector Erase (SE)
command is entered by driving CS# low, followed by the command code, and 3-address byte on SI. Any address
inside the sector is a valid address for the Sector Erase (SE) command. CS# must be driven low for the entire
duration of the sequence.
The Sector Erase command sequence: CS# goes low → sending Sector Erase command → 3-byte address on
SI → CS# goes high. The command sequence is shown in Figure21. CS# must be driven high after the eighth bit
of the last address byte has been latched in; otherwise the Sector Erase (SE) command is not executed. As soon
as CS# is driven high, the self-timed Sector Erase cycle (whose duration is tSE) is initiated. While the Sector
Erase cycle is in progress, the Status Register may be read to check the value of the Write In Progress (WIP) bit.
The Write In Progress (WIP) bit is 1 during the self-timed Sector Erase cycle, and is 0 when it is completed. At
some unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset. A Sector Erase
(SE) command applied to a sector which is protected by the Block Protect (BP4, BP3, BP2, BP1 and BP0) bit (see
Table1 & Table1.1.) is not executed.
Figure 21. Sector Erase Sequence Diagram
CS#
0
1
2
3
4
5
6
7
8
9
29 30 31
SCLK
SI
Command
20H
24 Bits Address
23 22
2
1
0
MSB
Rev.1.0
50 - 27
ELM [ ELM ELECTRONICS ]
