X9251US24IZ-2.7 Intersil, X9251US24IZ-2.7 Datasheet - Page 11

• Manufacturer Part Number: X9251US24IZ-2.7
• Description: IC XDCP QUAD 256TAP 50K 24-SOIC
• Manufacturer: Intersil
• Series: XDCP™r

Specifications of X9251US24IZ-2.7

• Taps: 256
• Resistance (ohms): 50K
• Number Of Circuits: 4
• Temperature Coefficient: 300 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Resistance In Ohms: 50K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Global Transfer Wiper Counter Register (WCR) to Data Register (DR)
Transfer Wiper Counter Register (WCR) to Data Register (DR)
Transfer Data Register (DR) to Wiper Counter Register (WCR)
Increment/Decrement Wiper Counter Register (WCR)
Read Status Register (SR)
NOTES:
1. “A1 ~ A0”: stands for the device addresses sent by the master.
2. WPx refers to wiper position data in the Counter Register
3. “I”: stands for the increment operation, SI held HIGH during active SCK phase (high).
4. “D”: stands for the decrement operation, SI held LOW during active SCK phase (high).
Falling
Falling
Falling
Falling
Falling
Edge
Edge
Edge
Edge
Edge
CS
CS
CS
CS
CS
0
0
0
0
0
Device Type
Device Type
Device Type
Device Type
Device Type
Identifier
Identifier
Identifier
Identifier
Identifier
1
1
1
1
1
0
0
0
0
0
1
1
1
1
1
0
0
0
0
0
Addresses
Addresses
Addresses
Addresses
Addresses
0
0
11
Device
Device
0
0
0
Device
Device
Device
A1
A1 A0
A1
A1 A0
A1
A0
A0
A0
1
1
0
1
Instruction
Instruction
0
Instruction
Instruction
Opcode
Opcode
Instruction
Opcode
Opcode
0
1
Opcode
1
0
1
0
1
0
1
0
0
0
1
0
1
RB
RB
RB
X
0
DR and WCR
Addresses
Addresses
DR and WCR
Addresses
Addresses
Addresses
X
RA
WCR
X9251
WCR
RA
0
DR
RA
0
0
0
0
0
0
1
0
0
0
I/D
0
Rising
Edge
CS
Rising
Edge
Rising
0
CS
Edge
CS
I/D
(Sent by X9251 on SO)
(Sent by Master on SI)
Increment/Decrement
0
.
Data Byte
0
HIGH-VOLTAGE
WRITE CYCLE
HIGH-VOLTAGE
WRITE CYCLE
.
0
.
0
.
0
I/D
WIP
I/D
Rising
Edge
Rising
CS
Edge
CS
April 13, 2007
FN8166.5