3.3V Uniform Sector
Dual and Quad Serial Flash
GD25Q80C
7. COMMANDS DESCRIPTION
All commands, addresses and data are shifted in and out of the device, beginning with the most significant bit on the
first rising edge of SCLK after CS# is driven low. Then, the one-byte command code must be shifted in to the device, most
significant bit first on SI, each bit being latched on the rising edges of SCLK.
See Table2, every command sequence starts with a one-byte command code. Depending on the command, this might
be followed by address bytes, or by data bytes, or by both or none. CS# must be driven high after the last bit of the command
sequence has been shifted in. For the commands of Read, Fast Read, Read Status Register or Release from Deep Power-
Down, and Read Device ID, the shifted-in command sequence is followed by a data-out sequence. CS# can be driven high
after any bit of the data-out sequence is being shifted out.
For the commands of Page Program, Sector Erase, Block Erase, Chip Erase, Write Status Register, Write Enable,
Write Disable or Deep Power-Down command, CS# must be driven high exactly at a byte boundary, otherwise the command
is rejected, and is not executed. That means CS# must be driven high when the number of clock pulses after CS# being
driven low is an exact multiple of eight. For Page Program, if CS# is driven high at any time the input byte is not a full byte,
nothing will happen and WEL will not be reset.
Table2. Commands (Standard/Dual/Quad SPI)
Command Name
Byte 1
06H
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
n-Bytes
Write Enable
Write Disable
Volatile SR
04H
50H
Write Enable
Read Status Register
05H
(S7-S0)
(S15-S8)
(S7-S0)
A23-A16
A23-A16
A23-A16
(continuous)
(continuous)
Read Status Register-1 35H
Write Status Register
Read Data
Fast Read
01H
03H
0BH
3BH
(S15-S8)
A15-A8
A15-A8
A15-A8
A7-A0
A7-A0
A7-A0
(D7-D0)
dummy
dummy
(Next byte)
(D7-D0)
(D7-D0)(1)
(continuous)
(continuous)
(continuous)
Dual Output
Fast Read
Dual I/O
Fast Read
BBH
6BH
EBH
E7H
A23-A8(2)
A23-A16
A7-A0
(D7-D0)(1)
A7-A0
(continuous)
(continuous)
(continuous)
(continuous)
M7-M0(2)
Quad Output
Fast Read
A15-A8
dummy
(D7-D0)(3)
Quad I/O
Fast Read
A23-A0
M7-M0(4)
A23-A0
M7-M0(4)
dummy(5)
dummy(6)
(D7-D0)(3)
(D7-D0)(3)
Quad I/O Word
Fast Read(7)
Continuous Read Mode FFH
Reset
Page Program
Quad Page Program
Sector Erase
02 H
32H
20H
52H
D8H
C7/60
H
A23-A16
A23-A16
A23-A16
A23-A16
A23-A16
A15-A8
A15-A8
A15-A8
A15-A8
A15-A8
A7-A0
A7-A0
A7-A0
A7-A0
A7-A0
(D7-D0)
(D7-D0)(3)
Next byte
Block Erase(32K)
Block Erase(64K)
Chip Erase
Enable Reset
Reset
66H
99H
77H
75H
Set Burst with Wrap
Program/Erase
Suspend
W6-W4
Program/Erase Resume 7AH
13
GILWAY [ GILWAY TECHNICAL LAMP ]
