Renesas X9317WS8

Overview

X9317WS8 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 functions as a three-terminal voltage divider or two-terminal variable resistor for precision analog trimming in DC bias, gain/offset, and voltage regulator control circuits.

For engineers reviewing the X9317WS8 datasheet, X9317WS8 pinout, X9317WS8 application, or X9317WS8 equivalent, this page delivers verified specifications including ±20% end-to-end resistance tolerance, 200Ω typical wiper resistance at 5V, <5µA standby current, ±300ppm/°C total resistance temperature coefficient, and SOIC-8 package compatibility - all confirmed for the exact X9317WS8 ordering variant.

Technical Context

The X9317WS8 integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 100 discrete taps. Its solid-state architecture eliminates mechanical wear and enables automatic power-up recall of the last stored setting.

Operation relies on CS (chip select), U/D (direction), and edge-triggered INC inputs. Wiper movement uses make-before-break switching, and nonvolatile store occurs only when CS rises while INC is high - preventing accidental writes during power transitions.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (M8.15E), RoHS-compliant, narrow-body plastic package with 1.27mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9317WS8, AD5204BRZ10 offers quad-channel integration and finer 256-step resolution but requires SPI and lacks nonvolatile recall; MCP41010-I/P provides wider voltage range and higher resolution yet mandates active host management of wiper state - making X9317WS8 uniquely suited for self-contained, low-pin-count analog trimming with guaranteed power-on consistency.

Availability

X9317WS8 is available at Aetrix Electronics and suitable for LCD bias control, DC bias adjustment, gain and offset trim, laser diode bias control, and voltage regulator output control requiring stable component supply and long-term calibration retention.

Supply support for X9317WS8 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 microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT applications.

The X9317WS8 belongs to Renesas' XDCP™ family of digitally controlled potentiometers, engineered for high-reliability analog trimming in space-constrained, maintenance-free systems where mechanical potentiometer wear and calibration drift are unacceptable.

FAQ

What is the exact end-to-end resistance value and tolerance for X9317WS8?

The X9317WS8 has a nominal end-to-end resistance (RTOTAL) of 10kΩ with a tolerance of ±20%, specified across the full operating temperature range (-40°C to +85°C). This value is confirmed in the Ordering Information table on page 2 of FN8183 Rev.10.01 and applies specifically to the X9317WS8 variant, not other Rtotal options like 50kΩ models.

Does X9317WS8 retain its wiper position after power cycling?

Yes, X9317WS8 stores the wiper position in nonvolatile memory and automatically recalls it upon power-up. This behavior is guaranteed by the device architecture: the last valid wiper setting written via CS-high-with-INC-high sequence persists for 100 years and survives unlimited power cycles - a core feature distinguishing X9317WS8 from volatile digital potentiometers.

What package type and footprint does X9317WS8 use?

X9317WS8 uses an 8-lead narrow-body SOIC package (JEDEC MS-012 compliant, drawing M8.15E), with 1.27mm lead pitch and standard SOIC-8 land pattern. Pin 1 identification is marked via mold or ink feature, and the package is RoHS-compliant with matte tin e3 termination suitable for both SnPb and Pb-free reflow.

Can X9317WS8 operate from a 3.3V supply?

No, X9317WS8 is rated for 4.5V to 5.5V supply only. The datasheet specifies VCC = 4.5–5.5V for standard X9317 variants (page 4, Potentiometer Specifications); 3.3V operation is unsupported and may result in undefined logic levels, failed nonvolatile writes, or incomplete wiper movement. For 2.7–5.5V operation, Renesas offers the X9317WS8Z-2.7 variant instead.

How many wiper tap positions does X9317WS8 provide, and what is the resolution?

X9317WS8 provides exactly 100 wiper tap positions, corresponding to 99 resistive elements in series. Resolution is 1% of RTOTAL - for example, at 10kΩ, each step represents approximately 100Ω. This 100-tap granularity is fixed and confirmed in the device block diagram (Figure 1), Features list, and Absolute Linearity specification on page 4 of FN8183 Rev.10.01.