Renesas X9317UV8T1

Overview

X9317UV8T1 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 laser diode control circuits.

For engineers reviewing the X9317UV8T1 datasheet, X9317UV8T1 pinout, X9317UV8T1 application, or X9317UV8T1 equivalent, key selection criteria include its 50 kΩ end-to-end resistance, ±20% tolerance, 2.7–5.5 V supply range, -40°C to +85°C industrial temperature grade, and TSSOP-8 package compatibility with automated assembly.

Technical Context

The X9317UV8T1 integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 100 discrete taps. Its "make-before-break" switching ensures glitch-free transitions during wiper movement, while temperature-compensated resistor elements maintain ratiometric stability within ±20 ppm/°C.

Control logic responds to CS (chip select), U/D (direction), and edge-triggered INC (increment) signals. Wiper position is stored to nonvolatile memory only when CS rises while INC is high-enabling deterministic power-up recall without unintended writes during system initialization.

Key Specifications

Pinout & Package

Package: 8-lead TSSOP (RoHS-compliant, JEDEC MO-153 AC, M8.173 drawing), 4.4 mm × 3.0 mm body, 0.65 mm pitch, 1.20 mm max height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5175BRMZ-50 and MCP45HV51-503, the X9317UV8T1 offers optimal balance of industrial temperature support, minimal GPIO footprint, guaranteed 50 kΩ ±20% tolerance, and proven 100-year data retention-making it preferred for cost-sensitive, space-constrained, and long-lifecycle analog trim applications.

Availability

X9317UV8T1 is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias adjustment, and voltage regulator output trimming requiring stable component supply across industrial temperature grades and high-reliability nonvolatile settings.

Supply support for X9317UV8T1 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 enterprise applications.

The X9317UV8T1 belongs to Renesas' XDCP™ (Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical trimpots in precision analog calibration, bias control, and programmable gain/offset circuits where long-term stability and nonvolatile recall are mandatory.

FAQ

What is the exact end-to-end resistance value and tolerance for X9317UV8T1?

The X9317UV8T1 has a nominal end-to-end resistance (R_TOTAL) of 50 kΩ with a tolerance of ±20%, as specified in the Ordering Information table on page 2 of the FN8183 datasheet. This value is confirmed for all X9317UV8x variants and applies across the full -40°C to +85°C operating temperature range.

Does X9317UV8T1 support 3.3 V operation, and what is its minimum supply voltage?

Yes, X9317UV8T1 fully supports 3.3 V operation. Its supply voltage range is 2.7 V to 5.5 V, making it compatible with both 3.3 V and 5 V systems. The 2.7 V minimum allows reliable function in brown-out conditions common in battery-powered or low-noise analog subsystems.

How is wiper position stored and recalled in X9317UV8T1?

In X9317UV8T1, wiper position is stored to nonvolatile memory when the CS pin transitions from LOW to HIGH while the INC pin is held HIGH. Upon power-up, the device automatically recalls this stored value and sets the wiper to the last-saved tap position-requiring no host intervention or external memory.

What package type and dimensions does X9317UV8T1 use?

X9317UV8T1 uses an 8-lead TSSOP package per JEDEC MO-153 AC standard (drawing M8.173), measuring 4.4 mm × 3.0 mm with 0.65 mm lead pitch. Pin 1 is marked with an ID notch, and the package is RoHS-compliant with matte tin terminations rated for Pb-free reflow.

Can X9317UV8T1 be used as a two-terminal variable resistor, and what is its wiper resistance?

Yes, X9317UV8T1 can operate as a two-terminal variable resistor by connecting either RH or RL to RW and using the remaining terminal with RW. Its typical wiper resistance is 200 Ω at 5 V supply, ensuring low insertion loss in current-sensing or gain-setting paths where series resistance impacts accuracy.