Renesas X9317TP

Overview

X9317TP from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 discrete wiper tap positions, nonvolatile wiper position storage, and 3-wire up/down serial interface. It operates 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 X9317TP datasheet, X9317TP pinout, X9317TP application, or X9317TP equivalent, key selection criteria include end-to-end resistance tolerance (±20%), wiper resistance (200–400 Ω at 5 V), standby current (<5 µA), ratiometric temperature coefficient (±20 ppm/°C), and compatibility with 2.7–5.5 V supply rails.

Technical Context

The X9317TP integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 100 taps. Its "make-before-break" switching ensures continuity during wiper transitions, while the resistor array features temperature-compensated elements yielding ±300 ppm/°C total resistance drift.

Control is executed via CS (chip select), U/D (direction), and edge-triggered INC inputs. A HIGH-to-LOW transition on INC moves the wiper; CS rising while INC is HIGH initiates nonvolatile store. Power-up recalls the last stored position without external initialization.

Key Specifications

Pinout & Package

Package: 8-lead TSSOP (RoHS-compliant, JEDEC MO-153 AC). Dimensions: 4.40 mm × 3.0 mm × 1.20 mm max height. Lead pitch: 0.65 mm.

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 X9317TP offers superior ratiometric temperature stability (±20 ppm/°C vs. ≥100 ppm/°C), simpler 3-wire control requiring only three GPIOs, and guaranteed <5 µA standby current-making it optimal for low-power, precision analog trimming where voltage-ratio integrity is critical.

Availability

X9317TP is available at Aetrix Electronics and suitable for LCD bias control, laser diode biasing, voltage regulator output programming, and precision DC offset trimming requiring stable component supply across commercial and industrial temperature ranges.

Supply support for X9317TP 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 manufacturer specializing in microcontrollers, analog mixed-signal devices, and power management ICs for automotive, industrial, and IoT applications.

The X9317TP belongs to Renesas' XDCP™ (eXternally Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical potentiometers in precision analog trimming applications where nonvolatility, low power, and temperature-stable ratio performance are essential.

FAQ

What is the supply voltage range supported by the X9317TP?

The X9317TP supports a supply voltage range of 2.7 V to 5.5 V, enabling interoperability with both 3.3 V and 5 V logic systems. This range is explicitly specified in the Absolute Maximum Ratings and Potentiometer Specifications tables of the FN8183 datasheet, and applies across the full operating temperature range of −40°C to +85°C for industrial-grade variants. Operation outside this window may compromise wiper positioning accuracy or nonvolatile memory retention.

Does the X9317TP retain its wiper position after power loss?

Yes, the X9317TP stores the wiper position in nonvolatile memory and automatically recalls it upon power-up. This behavior is guaranteed by the device's architecture: a store operation is triggered when CS transitions HIGH while INC is held HIGH, and the value remains retained for up to 100 years per JEDEC standards. The X9317TP does not require external backup power or host MCU intervention to restore the last valid setting.

How many wiper tap positions does the X9317TP provide?

The X9317TP provides exactly 100 discrete wiper tap positions, corresponding to a 99-element resistor array with endpoints. This is confirmed in the device overview ("100 wiper tap points"), block diagram labeling ("HUNDRED"), and electrical specifications table where resolution is defined as 1% (1/99). Each tap represents a unique, stable voltage division ratio between RH and RL terminals, with no interpolation or analog smoothing applied.

What package type is used for the X9317TP?

The X9317TP is packaged in an 8-lead TSSOP (Thin Shrink Small Outline Package), compliant with JEDEC MO-153 AC. Its dimensions are 4.40 mm × 3.0 mm × 1.20 mm maximum height, with 0.65 mm lead pitch. This package is explicitly listed in the Ordering Information table under part numbers ending in "V8", including X9317WV8IZ and X9317WV8Z variants, and confirmed in the Pin Configurations section on page 3 of FN8183 Rev.10.01.

Can the X9317TP be used as a two-terminal variable resistor?

Yes, the X9317TP can be configured as a two-terminal variable resistor by connecting either RH or RL to RW externally and using the remaining two pins (e.g., RW and RL) as the adjustable resistance element. This usage mode is explicitly supported in the Applications section and Figure 4 of the datasheet, and leverages the same 100-tap resolution and nonvolatile storage. Wiper resistance (200–400 Ω) and end-to-end tolerance (±20%) directly define the usable resistance range and accuracy in this configuration.