W25M02GV
8.2.2 Device Reset (FFh)
Because of the small package and the limitation on the number of pins, the W25M02GV provide a
software Reset instruction instead of a dedicated RESET pin. Once the Reset instruction is accepted, any
on-going internal operations will be terminated and the device will return to its default power-on state and
lose all the current volatile settings, such as Volatile Status Register bits. Once the Reset command is
accepted by the device, the device will take approximately tRST to reset, depending on the current
operation the device is performing, tRST can be 5us~500us. During this period, no command will be
accepted. Also, “Software Die Select (C2h)” should not be issued during the maximum tRST (500us) time
period to avoid possible die selection confusion due to the reset state of the dies.
Data corruption may happen if there is an on-going internal Erase or Program operation when Reset
command sequence is accepted by the device. It is recommended to check the BUSY bit in Status
Register before issuing the Reset command.
/CS
Mode 3
Mode 0
0
1
2
3
4
5
6
7
Mode 3
Mode 0
CLK
Instruction (FFh)
DI
(IO0)
High Impedance
DO
(IO1)
Figure 5. Device Reset Instruction
Default values of the Status Registers after power up and Device Reset
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