n25q064 Numonyx, n25q064 Datasheet - Page 84

• Manufacturer Part Number: n25q064
• Description: 64mb 1.8v, Multiple I/o, 4kb Subsector Erase, Xip Enabled, Serial Flash Memory With 108 Mhz Spi Bus Interface
• Manufacturer: Numonyx

Instructions
9.1.31
9.1.32
84/154
While the Write Non Volatile Configuration register cycle is in progress, it is possible to
monitor the end of the process by polling status Register write in progress (WIP) bit or the
Flag Status Register Program/Erase Controller bit. The write in progress (WIP) bit is 1
during the self-timed Write Non Volatile Configuration register cycle, and is 0 when it is
completed. When the cycle is completed, the write enable latch (WEL) is reset.
The Write Non Volatile Configuration register (WRNVCR) instruction allows the user to
change the values of all the Non Volatile Configuration Register bits, described in
Non-Volatile Configuration
The Write Non Volatile Configuration Register impacts the memory behavior only after the
next power on sequence.
Figure 38. Write NV Configuration Register instruction sequence
Read Volatile Configuration Register
The Read Volatile Configuration Register (RDVCR) instruction allows the Volatile
Configuration Register to be read. See
Figure 39. Read Volatile Configuration Register instruction sequence
Write Volatile Configuration Register
The Write Volatile Configuration register (WRVCR) instruction allows new values to be
written to the Volatile Configuration register. Before it can be accepted, a write enable
(WREN) instruction must have been executed. After the write enable (WREN) instruction
has been decoded and executed, the device sets the write enable latch (WEL).
The Write Volatile Configuration register (WRVCR) instruction is entered by driving Chip
Select (S) Low, followed by the instruction code and the data byte on serial data input
(DQ0).
Chip Select (S) must be driven High after the eighth bit of the data byte has been latched in.
If not, the Write Volatile Configuration register (WRVCR) instruction is not executed.
S
C
DQ0
DQ1
S
C
DQ0
DQ1
0
High Impedance
1
0
2
Instruction
1
High Impedance
3
2
Instruction
4
3
5
4
6
Register.
5
7
6
7
8
7
Volatile Configuration
6
9 10 11 12 13 14 15
7
8
5
Register Out
6
9 10 11 12 13 14 15
MSB
4
5
LS Byte
Byte
3
Table 5.: Volatile Configuration
4
Micron Technology, Inc., reserves the right to change products or specifications without notice.
2
3
2
1
1
0
NVCR In
0
7
15 14 13 12
16 17 18 19 20
Volatile Configuration
6
5
Register Out
MS Byte
MSB
4
Byte
3
11 10 9
2
21 22 23 24
1
©2010 Micron Technology, Inc. All rights reserved.
0
8
7
Register.
N25Q064 - 1.8V
Table 3.: