Datasheet

23A256/23K256
DS22100F-page 12  2008-2011 Microchip Technology Inc.
2.6 Write Status Register Instruction
(WRSR)
The Write Status Register instruction (WRSR) allows the
user to write to the bits in the STATUS register as
shown in Table 2- 2 . This allows for setting of the Device
operating mode. Several of the bits in the STATUS
register must be cleared to ‘0’. See Figure 2-8 for the
WRSR timing sequence.
FIGURE 2-8: WRITE STATUS REGISTER TIMING SEQUENCE (WRSR )
2.7 Power-On State
The 23X256 powers on in the following state:
• The device is in low-power Standby mode
(CS = 1)
• A high-to-low-level transition on CS
is required to
enter active state
SO
SI
CS
91011 12131415
01000000
7654
210
Instruction Data to STATUS Register
High-Impedance
SCK
0 23456718
3