Renesas X9252WV24I-2.7

Overview

X9252WV24I-2.7 from Renesas Electronics is a quad digitally controlled potentiometer (XDCP™) with 256-tap resolution, 10 kΩ end-to-end resistance, 2-wire and Up/Down interfaces, and nonvolatile data registers. It operates from 2.7 V to 5.5 V, features <100 µA standby current, and is used for precision bias voltage trimming in analog front-ends and programmable gain stages.

For engineers reviewing the X9252WV24I-2.7 datasheet, X9252WV24I-2.7 pinout, X9252WV24I-2.7 application, or X9252WV24I-2.7 equivalent, key selection considerations include its 10 kΩ RTOTAL, TSSOP-24 package with verified 24-pin mapping, dual-interface flexibility (2-wire + U/D), wiper current limit of ±3 mA, and power-on recall from DR00–DR30 nonvolatile registers.

Technical Context

The X9252WV24I-2.7 integrates four independent 255-segment resistor arrays, each with a dedicated volatile Wiper Counter Register (WCR) and four nonvolatile Data Registers (DR00–DR33). Wiper position is selected via 8-bit decoded switching, enabling precise 0.4% resolution control.

It supports two concurrent control paths: a 400 kHz 2-wire interface (SCL/SDA) with slave address A0–A2 configuration and an asynchronous Up/Down interface (CS/U/D/DS0/DS1) for direct hardware adjustment. Nonvolatile writes require WP = HIGH and CS high-to-low transition, with 5 ms typical internal write cycle time.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (4.4 mm wide), RoHS-compliant, moisture sensitivity level per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digitally controlled potentiometer applications.

Compared with AD5242BRUZ10 and MCP42010-I/P, the X9252WV24I-2.7 uniquely delivers quad 256-tap channels with dual-interface control and guaranteed power-on recall - eliminating boot-time MCU intervention and reducing BOM count in multi-sensor systems.

Availability

X9252WV24I-2.7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, medical instrument calibration, audio signal processing, and programmable power supply feedback networks requiring stable component supply and long-term calibration integrity.

Supply support for X9252WV24I-2.7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog power, and mixed-signal solutions for industrial, automotive, and infrastructure markets.

The X9252WV24I-2.7 belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimpots in high-reliability analog trimming applications where long-term stability and nonvolatile calibration retention are mandatory.

FAQ

What is the total end-to-end resistance of the X9252WV24I-2.7?

The X9252WV24I-2.7 has a nominal end-to-end resistance (RTOTAL) of 10 kΩ, confirmed in the ordering information table and analog specifications section of the FN8167 datasheet. This value applies across all four DCPs and is specified with ±20% tolerance. The 10 kΩ value directly determines voltage division ratios and loading effects in bias and gain networks where the X9252WV24I-2.7 is deployed.

Does the X9252WV24I-2.7 support automatic recall of wiper positions at power-up?

Yes, the X9252WV24I-2.7 automatically recalls wiper positions from nonvolatile Data Registers DR00, DR10, DR20, and DR30 into corresponding Wiper Counter Registers WCR0–WCR3 upon power-up. This behavior is guaranteed by design and occurs within 2 ms after VCC exceeds 2.7 V, as specified in the Power-Up Timing table. No host initialization is required for the X9252WV24I-2.7 to resume its last calibrated state.

Can the X9252WV24I-2.7 be used with both 2-wire and Up/Down interfaces simultaneously?

No - the X9252WV24I-2.7 does not support concurrent operation of both interfaces. When CS is LOW, the Up/Down interface is active and the 2-wire interface is disabled; when CS is HIGH, the 2-wire interface is enabled and Up/Down control is ignored. This mutual exclusion is explicitly defined in the Pin Descriptions and Functional Diagram sections of the FN8167 datasheet for the X9252WV24I-2.7.

What is the maximum allowable wiper current for the X9252WV24I-2.7?

The absolute maximum wiper current for the X9252WV24I-2.7 is ±3.0 mA per DCP, as specified in the Analog Specifications table under parameter IW. Exceeding this limit risks irreversible degradation of the internal CMOS switches. This rating applies regardless of wiper position and must be enforced in all circuit designs using the X9252WV24I-2.7, especially in voltage divider or current-source configurations.

How is nonvolatile write protection implemented on the X9252WV24I-2.7?

Nonvolatile write protection on the X9252WV24I-2.7 is controlled by the WP (Write Protect) pin: when WP is driven LOW, all nonvolatile write operations - including 2-wire "Write to DR" commands and Up/Down "Store" actions - are disabled. This hardware lock prevents accidental overwriting of calibrated values and is active independently of software register states. The WP pin must be HIGH for any nonvolatile update to the X9252WV24I-2.7 to succeed.