Renesas Electronics X9418
The X9418 integrates two digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated microcircuit. The digitally controlled potentiometer is implemented using 63 resistive elements in a series array. The position of the wiper on the array is controlled by the user through the 2-wire bus interface.FEATURES
● Two potentiometers in one package● 2-wire serial interface
● Register oriented format —Direct Read/Write/Transfer Wiper Position —Store as many as Four Positions per Potentiometer
● Power supplies —VCC = 2.7V to 5.5V —V+ = 2.7V to 5.5V —V– = -2.7V to -5.5V
● Low power CMOS —Standby current < 1µA —Ideal for Battery Operated
APPLICATIONS
● High reliability —Endurance–100,000 Data Changes per Bit per Register —Register Data Retention–100 years● 8-bytes of nonvolatile memory
● 2.5k, 10k resistor array
● Resolution: 64 taps each potentiometer
● 24-pin plastic DIP, 24-lead TSSOP and 24-lead SOIC packages
● Pb-Free plus anneal available (RoHS compliant)
DESCRIPTION
Between each element are tap points connected to the wiper terminal through switches. Each potentiometer has associated with it a volatile Wiper Counter Register (WCR) and 4 nonvolatile Data Registers (DR0:DR3) that can be directly written to and read by the user. The contents of the WCR controls the position of the wiper on the resistor array through the switches.