Renesas X9317TS8-2.7

Overview

X9317TS8-2.7 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100 wiper tap points, nonvolatile wiper position storage, and 2.7V to 5.5V supply operation. It implements a 99-element resistor array with temperature-compensated end-to-end resistance tolerance of ±20%, wiper resistance ≤400Ω at 2.7V, and standby current <5µA. It serves as a three-terminal voltage divider or two-terminal variable resistor in precision analog trimming applications.

For engineers reviewing the X9317TS8-2.7 datasheet, X9317TS8-2.7 pinout, X9317TS8-2.7 application, or X9317TS8-2.7 equivalent, this page delivers verified specifications including VCC range (2.7–5.5V), RTOTAL = 10kΩ, MSOP-8 package mapping, 3-wire up/down interface timing, and nonvolatile store/recall behavior - all confirmed from Renesas FN8183 Rev.10.01.

Technical Context

The X9317TS8-2.7 integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 100 discrete taps on a 99-resistor ladder. Its "make-before-break" switching ensures continuity during wiper transitions, while ratiometric temperature coefficient of ±20 ppm/°C maintains voltage-divider accuracy under thermal drift.

Operation relies on three dedicated digital inputs: CS (chip select, active-low), U/D (direction control), and INC (negative-edge-triggered increment). A store command executes when CS rises while INC is high, writing the current wiper position to EEPROM with 100,000-cycle endurance and 100-year data retention.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (M8.118), RoHS-compliant, 3.0mm × 3.0mm body, 0.65mm pitch, 1.10mm max height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5171BRMZ-10 and MCP41010-I/P, the X9317TS8-2.7 uniquely combines 100-tap resolution, true nonvolatile store/recall, and minimal 3-wire interface - delivering self-contained analog trimming without firmware dependency or external memory.

Availability

X9317TS8-2.7 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 commercial and industrial temperature ranges.

Supply support for X9317TS8-2.7 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 specializing in microcontrollers, analog power, and mixed-signal solutions for automotive, industrial, and IoT markets.

The X9317 series was designed as a solid-state replacement for mechanical potentiometers in precision analog trimming applications - emphasizing reliability, temperature stability, and nonvolatile configuration retention.

FAQ

What is the supply voltage range for the X9317TS8-2.7?

The X9317TS8-2.7 operates from 2.7V to 5.5V, supporting both single-cell Li-ion and standard 3.3V/5V system rails. This extended low-voltage capability enables use in battery-powered instrumentation where headroom is constrained. The device maintains full functionality-including wiper movement, nonvolatile store, and 100-tap resolution-across this entire range, as verified in Renesas FN8183 Rev.10.01 Section "Potentiometer Specifications".

Does the X9317TS8-2.7 retain its wiper position after power loss?

Yes, the X9317TS8-2.7 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is intrinsic to the device architecture and requires no external components or firmware intervention. The EEPROM supports 100,000 store cycles and guarantees 100 years of data retention at rated temperatures, as specified in the "Endurance and Data Retention" table on page 5 of the datasheet.

What package type is used for the X9317TS8-2.7?

The X9317TS8-2.7 uses an 8-lead MSOP package (JEDEC MO-187-AA compliant, drawing M8.118), measuring 3.0mm × 3.0mm with 0.65mm lead pitch. This compact RoHS-compliant package supports surface-mount assembly and offers thermal resistance θJA = 145°C/W, making it suitable for space-constrained industrial PCBs. Pinout matches standard MSOP-8 layout per Figure 2 on page 3 of FN8183 Rev.10.01.

How does the 3-wire interface of the X9317TS8-2.7 work?

The X9317TS8-2.7 uses CS (chip select), U/D (up/down), and INC (increment) signals - no clock or data bus required. With CS low, each negative edge on INC moves the wiper one tap in the direction set by U/D. A rising edge on CS while INC is high initiates nonvolatile store. This minimalist interface reduces MCU pin count and simplifies layout versus SPI/I²C alternatives, as detailed in the "Principles of Operation" section (page 8).

What is the maximum wiper current rating for the X9317TS8-2.7 at 2.7V?

At 2.7V supply, the X9317TS8-2.7 supports a maximum wiper current (IW) of ±4.4mA, with wiper resistance up to 1000Ω under worst-case conditions. This rating ensures safe operation in current-sense feedback paths and low-voltage bias networks. Exceeding ±4.4mA risks exceeding the 10mW total power rating for 10kΩ RTOTAL devices, as defined in the "Potentiometer Specifications" table on page 4.