23A256-I/SN Microchip Technology, 23A256-I/SN Datasheet - Page 12

• Manufacturer Part Number: 23A256-I/SN
• Description: IC SRAM 256KBIT 20MHZ 8SOIC
• Manufacturer: Microchip Technology
• Type: Synchronousr

Specifications of 23A256-I/SN

• Memory Size: 256K (32K x 8)
• Package / Case: 8-SOIC (3.9mm Width)
• Format - Memory: RAM
• Memory Type: SRAM
• Speed: 20MHz
• Interface: SPI Serial
• Voltage - Supply: 1.7 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Access Time: 32 ns
• Maximum Clock Frequency: 16 MHz
• Supply Voltage (max): 1.95 V
• Supply Voltage (min): 1.5 V
• Maximum Operating Current: 10 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Number Of Ports: 1
• Operating Supply Voltage: 1.8 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

23X256
2.6
The Write Status Register instruction (WRSR) allows the
user to write to the bits in the STATUS register as
shown in
operating mode. Several of the bits in the STATUS
register must be cleared to ‘0’. See
WRSR timing sequence.
FIGURE 2-8:
2.7
The 23X256 powers on in the following state:
• The device is in low-power Standby mode
• A high-to-low-level transition on CS is required to
DS22100E-page 12
(CS = 1)
enter active state
CS
SI
SO
SCK
Write Status Register Instruction
(WRSR)
Power-On State
Table
2-2. This allows for setting of the Device
0
0
WRITE STATUS REGISTER TIMING SEQUENCE (WRSR)
0
1
0
Instruction
2
0
3
Figure 2-8
0
4
0
5
for the
High-Impedance
0
6
1
7
7
8
6
9
Data to STATUS Register
10
5
11
4
 2010 Microchip Technology Inc.
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3
13
2
14
1
15
0