n25q064 Numonyx, n25q064 Datasheet - Page 38

• 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

Volatile and Non Volatile Registers
Table 7.
6.4.1
38/154
VECR<7>
VECR<6>
VECR<5>
VECR<4>
VECR<3>
VECR<2:0>
Bit
Volatile Enhanced Configuration Register
Quad Input Command VECR<7>
The Quad Input Command configuration bit can be used to make the memory start working
in QIO-SPI protocol directly after the Write Volatile Enhanced Configuration Register
(WRVECR) instruction. The default value of this bit is 1, corresponding to Extended SPI
protocol, If this bit is set to 0 the memory works in QIO-SPI protocol. If VECR bit 7 is set
back to 1 the memory start working again in Extended SPI protocol, unless the bit 6 is set to
0 (in this case the memory start working in DIO-SPI mode).
Please note that in case both QIO-SPI and DIO-SPI are enabled (both bit 7and bit 6 of the
VECR set to 0), the memory will work in QIO-SPI.
Quad Input
Command
Dual Input
Command
Reserved
Reset/Hold
disable
Accelerator
pin enable in
QIO-SPI
protocol or in
QIFP/QIEFP
Output Driver
Strength
HOLD (Reset) functionality disabling
To enable the VPP functionality in Quad I/O modify operations
To define output driver strength (3 bit)
Parameter
Warning:
0
1
0
1
x
0
1
0
1
000
001
010
011
100
101
110
111
WARNING: in case of both QIO-SPI and DIO-SPI enabled, the
memory works in QIO-SPI
Value
Enabled
Disabled (default)
Enabled
Disabled (default)
Reserved
Disabled
Enabled (default)
Enabled
Disabled (default)
reserved
90
60
45
reserved
20
15
30 (default)
Description
Micron Technology, Inc., reserves the right to change products or specifications without notice.
Fixed value = 0b
Enable command on four input lines
Enable command on two input lines
Disable Pad Hold/Reset functionality
The bit must be considered in case of QIFP,
QIEFP, or QIO-SPI protocol. It is “Don’t
Care” otherwise.
Impedance at V
©2010 Micron Technology, Inc. All rights reserved.
CC
/2
Note
N25Q064 - 1.8V