Renesas X9317WV8ZT1

Overview

X9317WV8ZT1 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 wiper tap positions, nonvolatile wiper position storage, and 3-wire up/down serial interface. It operates from 4.5V to 5.5V, delivers ±20% end-to-end resistance tolerance, and supports voltage divider or variable resistor configurations in precision analog trimming applications.

For engineers reviewing the X9317WV8ZT1 datasheet, X9317WV8ZT1 pinout, X9317WV8ZT1 application, or X9317WV8ZT1 equivalent, this device serves as a solid-state replacement for mechanical potentiometers in DC bias adjustment, laser diode bias control, and voltage regulator output tuning-requiring stable wiper position retention across power cycles and low standby current (<5 µA).

Technical Context

The X9317WV8ZT1 integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 100 discrete taps. Its resistor array uses temperature-compensated elements yielding ±300 ppm/°C total resistance TC and ±20 ppm/°C ratiometric TC-critical for stable voltage division under thermal variation.

Operation relies on three digital inputs: CS (chip select), U/D (direction control), and INC (edge-triggered increment/decrement). Wiper position is stored to nonvolatile memory only when CS transitions HIGH while INC is HIGH, enabling deterministic power-up recall without unintended writes during system initialization.

Key Specifications

Pinout & Package

Package: 8-lead TSSOP (JEDEC MO-153, variation AC), 4.4 mm × 3.0 mm body, 0.65 mm lead pitch, RoHS-compliant matte tin finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5204BRUZ10 and MCP41010-I/P, the X9317WV8ZT1 trades higher tap count and serial protocol flexibility for autonomous nonvolatile operation-making it optimal for single-channel, set-and-forget analog trimming where MCU resources or board space are constrained.

Availability

X9317WV8ZT1 is available at Aetrix Electronics and suitable for LCD bias control, DC bias adjustment, and voltage regulator output tuning requiring stable component supply, long-term calibration retention, and commercial-temperature reliability.

Supply support for X9317WV8ZT1 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 Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and enterprise applications.

The X9317WV8ZT1 belongs to Renesas' XDCP™ (Digitally Controlled Potentiometer) product line, designed specifically for replacing mechanical trimmers in precision analog circuits requiring zero-maintenance, high-reliability, and power-cycle-retentive adjustment.

FAQ

What is the supply voltage range for the X9317WV8ZT1?

The X9317WV8ZT1 operates from 4.5 V to 5.5 V. This range is specified for the X9317WV8Z variant per the datasheet's "Potentiometer Specifications" table and applies directly to X9317WV8ZT1, which shares identical electrical characteristics and TSSOP packaging. Operation outside this window may cause undefined behavior or damage.

Does the X9317WV8ZT1 retain its wiper position after power loss?

Yes, the X9317WV8ZT1 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is confirmed in the datasheet's "Principles of Operation" section and requires a valid store command (CS HIGH while INC is HIGH) prior to power-down. The memory retains data for 100 years under normal conditions.

What package type is used for the X9317WV8ZT1?

The X9317WV8ZT1 uses an 8-lead TSSOP package (JEDEC MO-153, variation AC), as explicitly stated in the "Ordering Information" table on page 2 of the datasheet. Pin configuration and mechanical dimensions match drawing M8.173, with 0.65 mm lead pitch and RoHS-compliant matte tin plating.

How many wiper tap positions does the X9317WV8ZT1 support?

The X9317WV8ZT1 supports exactly 100 wiper tap positions, corresponding to 99 resistive elements in series. This is confirmed in the device description on page 1 ("100 wiper tap points") and the block diagram (Figure 1), where the counter output drives a 100-position decoder. Each tap provides 1% resolution across the end-to-end resistance.

What is the maximum wiper current rating for the X9317WV8ZT1?

The X9317WV8ZT1 has a maximum wiper current rating of ±4.4 mA, as specified in the "Potentiometer Specifications" table under parameter IW. Exceeding this limit risks irreversible degradation of the wiper switch network and is independent of package type or temperature grade.