Renesas X9317UV8IZ

Overview

X9317UV8IZ 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 2.7V 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 X9317UV8IZ datasheet, X9317UV8IZ pinout, X9317UV8IZ application, or X9317UV8IZ equivalent, key selection criteria include industrial temperature range (-40°C to +85°C), TSSOP-8 package, 50kΩ total resistance, low standby current (<5µA), and nonvolatile recall on power-up.

Technical Context

The X9317UV8IZ 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 with ±300 ppm/°C total resistance TC and ±20 ppm/°C ratiometric TC.

Wiper movement follows make-before-break switching, enabling glitch-free transitions; store operation occurs on CS↑ with INC high, requiring 5–10 ms. The device supports three-terminal potentiometer and two-terminal rheostat topologies with RH, RL, and RW terminals fully specified for analog signal path integrity.

Key Specifications

Pinout & Package

Package: 8-lead TSSOP (RoHS-compliant, JEDEC MO-153 AC, M8.173 drawing), 4.4 mm × 3.0 mm footprint, 1.2 mm max height, 0.65 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5175BRMZ-50 and MCP4551T-503E/MS, the X9317UV8IZ offers simpler 3-wire control, guaranteed nonvolatile recall on power-up without host intervention, and identical TSSOP-8 footprint-reducing firmware overhead and ensuring deterministic startup behavior in resource-constrained designs.

Availability

X9317UV8IZ is available at Aetrix Electronics and suitable for LCD bias control, laser diode biasing, and voltage regulator output trimming requiring stable component supply across industrial temperature ranges and long product lifecycles.

Supply support for X9317UV8IZ 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 IoT applications.

The X9317 family was designed specifically for precision analog trimming tasks-replacing mechanical potentiometers with solid-state reliability, programmable resolution, and nonvolatile setting retention in industrial instrumentation and power management systems.

FAQ

What is the guaranteed operating temperature range for the X9317UV8IZ?

The X9317UV8IZ is rated for -40°C to +85°C, meeting industrial-grade environmental requirements. This specification is confirmed in the Ordering Information table on page 2 of the FN8183 Rev.10.01 datasheet, where "X9317UV8IZ" is explicitly listed with "-40 to +85" under Temperature Range (°C). The device maintains full electrical performance-including end-to-end resistance tolerance, wiper resistance, and timing parameters-across this range.

Does the X9317UV8IZ retain its wiper position after power loss?

Yes, the X9317UV8IZ stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is inherent to the device architecture: when CS transitions high while INC is high, the current counter value is written to nonvolatile memory. Upon subsequent power application, the stored value is loaded into the counter and applied to the wiper switch network-ensuring repeatable startup without host controller involvement. Data retention is specified at 100 years.

What is the total resistance value and tolerance of the X9317UV8IZ?

The X9317UV8IZ has a nominal end-to-end resistance (RTOTAL) of 50 kΩ with a tolerance of ±20%, as stated in the Ordering Information table (page 2) and Potentiometer Specifications table (page 4) of the FN8183 datasheet. This value applies across the full operating temperature range and is measured between RH and RL terminals with RW disconnected.

Can the X9317UV8IZ be used in a two-terminal variable resistor configuration?

Yes, the X9317UV8IZ supports two-terminal operation as a variable resistor by connecting either RH or RL to RW and using the remaining terminal with RW as the adjustable element. Figure 4 ("Two Terminal Variable Resistor; Variable Current") on page 9 of the FN8183 datasheet explicitly illustrates this configuration. In this mode, RW and RL (or RW and RH) form a rheostat whose resistance varies from near-zero to RTOTAL depending on wiper position.

What package type and dimensions does the X9317UV8IZ use?

The X9317UV8IZ uses an 8-lead TSSOP package per JEDEC MO-153 AC standard, designated M8.173 in Renesas documentation. Its body dimensions are 4.40 mm × 3.0 mm, thickness is ≤1.20 mm, and lead pitch is 0.65 mm. Pin 1 identification is marked on the top surface, and the package is RoHS-compliant with matte tin (e3) termination. Land pattern recommendations are provided in the M8.173 drawing on page 12 of FN8183.