Renesas X9313UPI

Overview

X9313UPI from Intersil is a digitally controlled potentiometer (XDCP™) with linear taper, 32-tap resolution, nonvolatile wiper position storage, ±V_CC terminal voltage capability, and 3-wire serial interface. It functions as a solid-state replacement for mechanical potentiometers in precision analog trimming circuits requiring power-up repeatability and temperature-stable resistance matching.

For engineers reviewing the X9313UPI datasheet, X9313UPI pinout, X9313UPI application, or X9313UPI equivalent, key selection criteria include end-to-end resistance tolerance (±20%), wiper resistance (40 Ω typ. at V_CC = 5 V), nonvolatile memory endurance (100,000 cycles), ratiometric tempco (±20 ppm/°C), and compatibility with 3 V to 5.5 V supply rails.

Technical Context

The X9313UPI implements a 31-element resistor array with make-before-break wiper switching, enabling glitch-free tap transitions. Its 5-bit up/down counter decodes to select one of 32 wiper positions, with store-on-CS↑/INC↑ operation preserving settings in nonvolatile memory for automatic recall at power-up.

Control logic responds to negative-edge-triggered INC input, directionally gated by U/D level, while CS enables device selection and initiates memory store or standby mode. Terminal voltage range spans –V_CC to +V_CC, supporting bipolar signal conditioning without external level-shifting circuitry.

Key Specifications

Pinout & Package

Package: 8-lead PDIP (Plastic Dual-In-Line Package), Pb-free, RoHS compliant, through-hole wave-solder compatible only.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5243BRMZ10 and MCP41010-I/P, the X9313UPI offers unique bipolar terminal voltage handling (–V_CC to +V_CC) and guaranteed power-up repeatability without host intervention-making it optimal for analog signal chains where supply rail symmetry and calibration persistence are mandatory.

Availability

X9313UPI is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system parameter tuning, programmable voltage references, and audio signal level control requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for X9313UPI 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

Intersil Corporation is a provider of precision analog and power management ICs, serving industrial, infrastructure, and high-end consumer markets with robust, specification-driven components.

The X9313UPI belongs to Intersil's XDCP™ (Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical trimmers in applications demanding long-term calibration stability, temperature resilience, and digital configurability without external memory.

FAQ

What is the maximum allowable voltage difference between RH/VH and RL/VL terminals for the X9313UPI?

The X9313UPI specifies ΔV = |VH – VL| ≤ 10 V for the X9313W variant group, which includes the X9313UPI. This limit ensures safe operation of the internal resistor array and switching elements under bias. Exceeding this differential may cause irreversible damage or parametric shift. Always verify terminal voltage compliance in both static and transient conditions per the Absolute Maximum Ratings table.

Does the X9313UPI retain its wiper position after power cycling?

Yes, the X9313UPI stores the wiper position in nonvolatile memory and automatically recalls it upon power-up. This behavior is guaranteed by design: the last stored value persists for up to 100 years and survives ≥100,000 store cycles. No external components or MCU intervention are required-making X9313UPI ideal for unattended or safety-critical recalibration scenarios.

Can the X9313UPI operate with a 3.3 V supply?

Yes, the X9313UPI supports a supply voltage range of 3 V to 5.5 V, fully covering standard 3.3 V logic systems. At V_CC = 3.3 V, all specifications-including wiper resistance, timing parameters, and terminal voltage range (–3.3 V to +3.3 V)-remain valid per the "X9313-3" variant definition in the Ordering Information table. No derating or external level-shifting is needed.

What is the function of the U/D pin on the X9313UPI?

The U/D (Up/Down) pin on the X9313UPI determines the direction of wiper movement during each INC pulse. When U/D is HIGH, INC edges increment the wiper position toward RH/VH; when LOW, they decrement toward RL/VL. The pin state is sampled synchronously with INC edges and may be changed dynamically while CS is LOW-enabling bidirectional fine-tuning without reinitializing the interface.

Is the X9313UPI pin-compatible with other members of the X9313 family?

Yes, all X9313 variants-including X9313UPI-share identical 8-pin PDIP pinout, electrical interface, and functional architecture. Differences are limited to end-to-end resistance value (1k/10k/50k Ω), temperature grade (–40°C to +85°C for X9313UPI), and supply voltage range. This uniformity allows drop-in substitution within the same package type, provided R_TOTAL and V_CC requirements match the target application.