X9250 Xicor, X9250 Datasheet
X9250
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X9250 Summary of contents
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... A0 A1 Data WP REV 1.1.5 1/31/03 X9250 DESCRIPTION The X9250 potentiometers (XDCP monolithic CMOS integrated circuit The digitally controlled potentiometer is implemented using 255 resistive elements in a series array. Between each element are tap points connected to the wiper terminal through switches. The position of the wiper on the array is controlled by the user through the SPI bus interface ...
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... The address inputs are used to set the least significant 2 bits of the 8-bit slave address. A match in the slave address serial data stream must be made with the address input in order to initiate communication with the X9250. A maximum of 4 devices may occupy the SPI serial bus. Potentiometer Pins V ...
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... Finally loaded with the contents of its Data Register zero (DR0) upon power-up. The Wiper Counter Register is a volatile register; that is, its contents are lost when the X9250 is powered- down. Although the register is automatically loaded with the value in R0 upon power-up, this may be different from the value present at power-down ...
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... The WIP bit is read with a read status command. INSTRUCTIONS Identification (ID) Byte The first byte sent to the X9250 from the host, following a CS going HIGH to LOW, is called the Identification byte. The most significant four bits of the slave address are a device type identifier, for the X9250 this is fi ...
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... Five instructions require a three-byte sequence to and R ) select one complete. These instructions transfer data between the 1 0 host and the X9250; either between the host and one of the data registers or directly between the host and the one of the four Wiper Counter Register. These instructions are: – ...
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... X9250 Figure 4. Two-Byte Instruction Sequence CS SCK Figure 5. Three-Byte Instruction Sequence (Write) CS SCL Figure 6. Three-Byte Instruction Sequence (Read) CS SCL Figure 7. Increment/Decrement Instruction Sequence CS SCK REV 1.1.5 1/31/ ...
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... X9250 Figure 8. Increment/Decrement Timing Limits SCK INC/DEC CMD Issued Table 1. Instruction Set Instruction I 3 Read Wiper Counter 1 Register Write Wiper Counter 1 Register Read Data Register 1 Write Data Register 1 XFR Data Register to 1 Wiper Counter Register XFR Wiper Counter 1 Register to Data Register ...
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... WCR opcode addresses (sent by Host on SI instruction DR and WCR opcode addresses (sent by X9250 on SO instruction DR and WCR opcode addresses (sent by host on SI) W ...
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... Edge instruction DR CS opcode addresses Rising R R Edge instruction opcode (sent by X9250 on SO www.xicor.com HIGH-VOLTAGE WRITE CYCLE CS Rising Edge . . . I/D I/D HIGH-VOLTAGE WRITE CYCLE Data Byte CS Rising W Edge I P Characteristics subject to change without notice ...
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... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Max. Device +70 C +85 C X9250-2.7 Limits Min. Typ. 150 X9250 +4.5 X9250-2.7 +2.7 X9250 -5.5 X9250-2.7 -5 pin -120 0.6 300 TOTAL 10/10/25 /R )/255, single pot L www.xicor.com Supply Voltage (V ...
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... X9250 D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.) Symbol Parameter I V supply current CC1 CC (active supply current CC2 CC (nonvolatile write current (standby Input leakage current LI I Output leakage current LO V Input HIGH voltage IH V Input LOW voltage ...
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... X9250 Circuit #3 SPICE Macro Model R TOTAL 10pF 25pF TIMING Symbol f SSI/SPI clock frequency SCK t SSI/SPI clock cycle time CYC t SSI/SPI clock high time WH t SSI/SPI clock low time WL t Lead time LEAD t Lag time LAG t SI, SCK, HOLD and CS input setup time ...
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... X9250 HIGH-VOLTAGE WRITE CYCLE TIMING Symbol t High-voltage write cycle time (store instructions) WR XDCP TIMING Symbol t Wiper response time after the third (last) power supply is stable WRPO t Wiper response time after instruction issued (all load instructions) WRL t Wiper response time from an active SCL/SCK edge (increment/decrement instruc- ...
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... X9250 Output Timing CS SCK t MSB SO ADDR SI Hold Timing CS SCK HOLD XDCP Timing (for all Load Instructions) CS SCK MSB SI VWx High Impedance SO REV 1.1.5 1/31/ HSU HOLD ... ... www.xicor.com ... ... LSB ... WRL LSB Characteristics subject to change without notice. ...
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... X9250 XDCP Timing (for Increment/Decrement Instruction) CS SCK VWx ADDR SI High Impedance SO Write Protect and Device Address Pins Timing REV 1.1.5 1/31/03 ... t WRID ... ... Inc/Dec Inc/Dec (Any Instruction WPAH WPASU www.xicor.com Characteristics subject to change without notice. ...
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... X9250 APPLICATIONS INFORMATION Basic Configurations of Electronic Potentiometers V R Three terminal Potentiometer; Variable voltage divider Application Circuits Noninverting Amplifier – (1 Offset Voltage Adjustment 100K – + TL072 10K 10K 10K +12V -12V REV 1.1.5 1/31/ ...
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... X9250 Application Circuits (continued) Attenuator – -1/2 G +1/2 Inverting Amplifier – – + frequency R 1 amplitude R A REV 1.1.5 1/31/ 10k ...
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... X9250 PACKAGING INFORMATION 24-Bump Chip Scale Package (CSP B24) Package Outline Drawing Top View (Sample Marking) Package Dimensions Symbol Package Width a Package Length b Package Height c Body Thickness d Ball Height e Ball Diameter f Ball Pitch – Width j Ball Pitch – Length k Ball to Edge Spacing – Width l Ball to Edge Spacing – ...
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... X9250 PACKAGING INFORMATION .026 (.65) BSC .303 (7.70) .311 (7.90) .0075 (.19) .0118 (.30) 0°–8° .020 (.50) .030 (.75) Detail A (20X) See Detail “A” NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) REV 1.1.5 1/31/03 24-Lead Plastic, TSSOP, Package Code V24 .169 (4.3) .252 (6.4) BSC .177 (4.5) .047 (1.20) .002 (.06) ...
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... X9250 PACKAGING INFORMATION Pin 1 Index Pin 1 (4X) 7° 0.050 (1.27) 0.010 (0.25) 0.020 (0.50) 0° – 8° 0.015 (0.40) 0.050 (1.27) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) REV 1.1.5 1/31/03 24-Lead Plastic, SOIC, Package Code S24 0.014 (0.35) 0.020 (0.50) 0.598 (15.20) 0.610 (15.49) X 45° 0.009 (0.22) 0.420" 0.013 (0.33) FOOTPRINT www.xicor.com 0.393 (10.00) ...
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... X9250 Ordering Information X9250 Device LIMITED WARRANTY Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty, express, statutory, implied description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. ...