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GD25D80CSIG Scheda tecnica(PDF) 19 Page - GigaDevice Semiconductor (Beijing) Inc.

Il numero della parte GD25D80CSIG
Spiegazioni elettronici  3.3V Uniform Sector Standard and Dual Serial Flash
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Produttore elettronici  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
Homepage  http://www.gigadevice.com/
Logo GIGADEVICE - GigaDevice Semiconductor (Beijing) Inc.

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3.3V Uniform Sector
Standard and Dual Serial Flash
GD25D80C
19
7.11.
64KB Block Erase (BE) (D8H)
The 64KB Block Erase (BE) command is for erasing the all data of the chosen block. A Write Enable (WREN)
command must previously have been executed to set the Write Enable Latch (WEL) bit. The 64KB Block Erase (BE)
command is entered by driving CS# low, followed by the command code, and three address bytes on SI. Any address inside
the block is a valid address for the 64KB Block Erase (BE) command. CS# must be driven low for the entire duration of the
sequence.
The 64KB Block Erase command sequence: CS# goes low  sending 64KB Block Erase command  3-byte address
on SI  CS# goes high. The command sequence is shown in Figure11. CS# must be driven high after the eighth bit of the
last address byte has been latched in; otherwise the 64KB Block Erase (BE) command is not executed. As soon as CS# is
driven high, the self-timed Block Erase cycle (whose duration is tBE) is initiated. While the Block Erase cycle is in progress,
the Status Register is accessed to check the value of the Write In Progress (WIP) bit. The Write In Progress (WIP) bit is 1
during the self-timed Block Erase cycle, and becomes 0 when it is completed. At some unspecified time before the cycle is
completed, the Write Enable Latch (WEL) bit is reset. A 64KB Block Erase (BE) command applied to a block which is
protected by the Block Protect (BP2, BP1, BP0) bits (see Table1) is not executed.
Figure11. 64KB Block Erase Sequence Diagram
7.12.
Chip Erase (CE) (60/C7H)
The Chip Erase (CE) command is for erasing the all data of the chip. A Write Enable (WREN) command must
previously have been executed to set the Write Enable Latch (WEL) bit .The Chip Erase (CE) command is entered by driving
CS# Low, followed by the command code on Serial Data Input (SI). CS# must be driven Low for the entire duration of the
sequence.
The Chip Erase command sequence: CS# goes low  sending Chip Erase command  CS# goes high. The
command sequence is shown in Figure12. CS# must be driven high after the eighth bit of the command code has been
latched in, otherwise the Chip Erase command is not executed. As soon as CS# is driven high, the self-timed Chip Erase
cycle (whose duration is tCE) is initiated. While the Chip 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 Chip 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.
The Chip Erase (CE) command is executed if the Block Protect (BP2, BP1, BP0) bits are all 0. The Chip Erase (CE)
command is not excuted if any sector is under protection.
Figure12. Chip Erase Sequence Diagram
Command
0
1
2
3
4
5
6
7
60H or C7H
CS#
SCLK
SI
Command
0
1
2
3
4
5
6
7
D8H
CS#
SCLK
SI
8
9
29 30 31
MSB
2
1
0
24 Bits Address
23 22


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