Renesas X9317WM8I-2.7

Overview

X9317WM8I-2.7 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100 wiper tap points, nonvolatile wiper position storage, and 10 kΩ end-to-end resistance. It operates from 2.7 V to 5.5 V, consumes <5 µA in standby, and uses a 3-wire up/down serial interface. It functions as a three-terminal voltage divider or two-terminal variable resistor for precision analog trimming in embedded systems.

For engineers reviewing the X9317WM8I-2.7 datasheet, X9317WM8I-2.7 pinout, X9317WM8I-2.7 application, or X9317WM8I-2.7 equivalent, key selection criteria include its 2.7–5.5 V supply range, MSOP-8 package, -40°C to +85°C industrial temperature rating, nonvolatile memory retention (100 years), and ±20% RTOTAL tolerance - critical for bias control and gain trim where power-down state persistence matters.

Technical Context

The X9317WM8I-2.7 implements a 99-element resistor array with make-before-break wiper switching, enabling glitch-free tap transitions. Its 7-bit counter drives a decoder that selects one of 100 wiper positions, with direction controlled by U/D and edge-triggered increment via INC.

Wiper position is stored in nonvolatile memory upon CS↑ while INC = HIGH, and automatically recalled at power-up. The device supports both three-terminal potentiometer (RH–RW–RL) and two-terminal rheostat (RW–RL or RW–RH) configurations, with RH/RL terminals rated for 0 V to VCC and RW exhibiting 200 Ω typical wiper resistance at 5 V.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (M8.118), RoHS-compliant, moisture sensitivity level (MSL) 1, thermal resistance θ_JA = 145°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5170BRMZ-10 and MCP41HV51-103, the X9317WM8I-2.7 uniquely combines 100-tap resolution, nonvolatile storage, 3-wire simplicity, and 10 kΩ resistance in an MSOP-8 package - making it optimal for space-constrained industrial systems requiring guaranteed power-up state and minimal GPIO overhead.

Availability

X9317WM8I-2.7 is available at Aetrix Electronics and suitable for LCD bias control, laser diode current regulation, and voltage regulator output trimming requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for X9317WM8I-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 microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT applications.

The X9317 family is designed specifically for solid-state analog trimming in resource-constrained embedded systems - emphasizing low power, nonvolatile state retention, and robust operation across industrial temperature ranges.

FAQ

What is the supply voltage range for the X9317WM8I-2.7?

The X9317WM8I-2.7 operates from 2.7 V to 5.5 V, supporting both 3.3 V and 5 V logic systems without external level shifters. This range is explicitly defined in the "Potentiometer Specifications" table on page 4 of the FN8183 datasheet, and the "-2.7" suffix in the part number denotes this extended low-voltage capability versus standard 4.5–5.5 V variants.

Does the X9317WM8I-2.7 retain its wiper position after power cycling?

Yes, the X9317WM8I-2.7 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is confirmed in the device overview (page 1), block diagram (Figure 1), and "Principles of Operation" section (page 8), with 100-year data retention and 100,000-cycle endurance specified on page 5.

What package type is used for the X9317WM8I-2.7?

The X9317WM8I-2.7 uses an 8-lead MSOP package (package drawing M8.118), as stated in the Ordering Information table on page 2 and confirmed in the "Pin Configurations" section on page 3. Its dimensions, land pattern, and thermal characteristics (θ_JA = 145°C/W) are detailed in the M8.118 outline drawing referenced on page 11.

How many wiper tap points does the X9317WM8I-2.7 provide?

The X9317WM8I-2.7 provides exactly 100 wiper tap points, corresponding to 99 resistive elements plus two end terminals. This is specified in the title ("100 Taps"), block diagram (Figure 1), and "Potentiometer Specifications" table (page 4), where resolution is defined as 1% and absolute linearity is referenced to MI = (V_RH−V_RL)/99.

What is the end-to-end resistance value and tolerance of the X9317WM8I-2.7?

The X9317WM8I-2.7 has a nominal end-to-end resistance (R_TOTAL) of 10 kΩ with a tolerance of ±20%, as listed in the Ordering Information table (page 2) and confirmed in the "Potentiometer Specifications" table (page 4). This value applies across the full operating temperature range (-40°C to +85°C) and supply voltage range (2.7–5.5 V).