Renesas X9252WV24IZ-2.7

Overview

X9252WV24IZ-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 storage. It operates from 2.7 V to 5.5 V, supports industrial temperature range (−40°C to +85°C), and delivers <100 µA standby current - used for precision bias voltage trimming in analog front-ends and programmable gain stages.

For engineers reviewing the X9252WV24IZ-2.7 datasheet, X9252WV24IZ-2.7 pinout, X9252WV24IZ-2.7 application, or X9252WV24IZ-2.7 equivalent, key selection criteria include its dual-interface flexibility (2-wire bus + discrete U/D control), guaranteed 100-year data retention, 24-lead TSSOP package with verified pin mapping, and wiper current rating of ±3 mA per DCP.

Technical Context

The X9252WV24IZ-2.7 integrates four independent 255-segment resistor arrays, each with dedicated volatile Wiper Counter Registers (WCRs) and four nonvolatile Data Registers (DRs). Wiper position is controlled via either 2-wire serial commands or discrete Up/Down pulses synchronized to SCL, with CS enabling interface mode selection.

At power-up, DR00–DR30 contents load into corresponding WCRs; hardware write protection (WP) disables nonvolatile writes when low. Each DCP supports three-terminal potentiometer or two-terminal variable resistor configurations, with ratiometric temperature coefficient of ±20 ppm/°C and absolute linearity of ±1 MI.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (4.4 mm width), 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 X9252WV24IZ-2.7 uniquely delivers quad-channel integration, dual-interface flexibility, guaranteed power-on recall from nonvolatile DR00–DR30, and 40 Ω wiper resistance - reducing component count and improving analog accuracy in compact industrial designs.

Availability

X9252WV24IZ-2.7 is available at Aetrix Electronics and suitable for precision analog trimming, sensor calibration, and programmable gain control requiring stable component supply across automotive infotainment, industrial process controllers, and medical diagnostic equipment.

Supply support for X9252WV24IZ-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 delivering high-performance microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.

The X9252 product line targets precision analog programmability in resource-constrained systems, emphasizing nonvolatile calibration retention, low-power operation, and flexible digital interface options for embedded sensor and signal-conditioning applications.

FAQ

What is the total end-to-end resistance of the X9252WV24IZ-2.7?

The X9252WV24IZ-2.7 has a nominal end-to-end resistance of 10 kΩ, confirmed in the Ordering Information table and Analog Specifications section of the FN8167 datasheet. This value applies across the full operating temperature range (−40°C to +85°C) with ±20% tolerance, and is distinct from the 2.8 kΩ version (X9252YV24IZ-2.7). The 10 kΩ value directly determines voltage division ratios and current-limiting behavior in circuit implementations.

Does the X9252WV24IZ-2.7 support true I²C communication?

Yes, the X9252WV24IZ-2.7 implements a standard 2-wire serial interface fully compatible with I²C protocol specifications, including START/STOP conditions, 7-bit slave addressing (with A0–A2 for device selection), ACK/NACK handshaking, and 400 kHz maximum clock frequency. It operates as a slave device only, with SDA as open-drain requiring external pull-up, and supports both volatile register writes and nonvolatile DR writes when WP is high.

How does power-up initialization work on the X9252WV24IZ-2.7?

At power-up, once VCC rises above 2.7 V, the X9252WV24IZ-2.7 automatically loads the contents of nonvolatile Data Registers DR00, DR10, DR20, and DR30 into their corresponding volatile Wiper Counter Registers (WCR0–WCR3) within 2 ms. This recall function ensures repeatable startup wiper positions without host intervention, and is enabled regardless of CS or WP pin states - provided VCC meets minimum specification.

Can the X9252WV24IZ-2.7 be used as a two-terminal variable resistor?

Yes, the X9252WV24IZ-2.7 supports two-terminal variable resistor configuration by connecting either RHx or RLx to the wiper terminal (RWx), leaving the other fixed terminal unconnected or tied to the same node. This mode is explicitly supported in the datasheet and enables use in current-limiting, LED brightness control, and RC timing circuits where three-terminal potentiometer topology is unnecessary.

What is the maximum allowable wiper current for the X9252WV24IZ-2.7?

The X9252WV24IZ-2.7 specifies a maximum wiper current of ±3 mA per DCP, as defined in the Analog Specifications table under "IW (Wiper Current)". Exceeding this limit risks long-term reliability degradation or temporary wiper position shift due to localized heating. This rating applies continuously across the full temperature range and must be observed even when using the device in two-terminal mode.