23A256-I/P Microchip Technology, 23A256-I/P Datasheet - Page 7

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

Specifications of 23A256-I/P

• Memory Size: 256K (32K x 8)
• 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
• Package / Case: 8-DIP (0.300", 7.62mm)
• Memory Configuration: 32K X 8
• Clock Frequency: 16MHz
• Supply Voltage Range: 1.7V To 1.95V
• Memory Case Style: DIP
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +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: Through Hole
• 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

TABLE 2-1:
FIGURE 2-1:
FIGURE 2-2:
 2010 Microchip Technology Inc.
CS
SCK
SI
SO
Instruction Name
SCK
SI
SO
CS
WRITE
READ
RDSR
WRSR
0
0
0
0
0
1
1
0
Instruction
0
INSTRUCTION SET
BYTE READ SEQUENCE
BYTE WRITE SEQUENCE
2
0
2
0
Instruction
3
3
0
0
Instruction Format
4
0000 0011
0000 0010
0000 0101
0000 0001
0
4
0
5
High-Impedance
5
0
1
6
High-Impedance
0
6
1
7
15 14 13 12
1
7
8
15 14 13 12
8
9 10 11
9 10 11
16-bit Address
Read data from memory array beginning at selected address
Write data to memory array beginning at selected address
Read STATUS register
Write STATUS register
16-bit Address
21 22 23 24 25 26 27 28 29 30 31
2
1
2
21 22 23 24 25 26 27 28 29 30 31
0 7
1
0
Description
6
7
5
Data Byte
6
4
5
3
Data Out
4
2
3
23X256
1
DS22100E-page 7
2
0
1
0