W29N02GVSIAA Datasheet, PDF (52/79 Pages) Winbond – W29N02GV 2G-BIT 3.3V NAND FLASH MEMORY

W29N02GV
9.8 WRITE PROTECT
#WP pin can enable or disable program and erase commands preventing or allowing program and
erase operations. Figure 9-29 to 9-34 shows the enabling or disabling timing with #WP setup time
(tWW) that is from rising or falling edge of #WP to latch the first commands. After first command is
latched, #WP pin must not toggle until the command operation is complete and the device is in the
ready state. (Status Register Bit5 (I/O5) equal 1)
# WE
I /Ox
#WP
R Y/# B Y
#WE
I/Ox
tWW
60h
D0h
Figure 9-28 Erase Enable
tWW
60h
D0h
#WP
RY/#BY
#WE
I/Ox
#WP
RY/#BY
Figure 9-29 Erase Disable
tWW
80 h
10h
( or 15h)
Figure 9-30 Program Enable
Release Date: February 1^st, 2016
52
– Revision B