Renesas X9317ZV8I-2.7

Overview

X9317ZV8I-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. Used for precision DC bias adjustment in LCD bias control and laser diode bias circuits.

For engineers reviewing the X9317ZV8I-2.7 datasheet, X9317ZV8I-2.7 pinout, X9317ZV8I-2.7 application, or X9317ZV8I-2.7 equivalent, key selection criteria include its 8-pin TSSOP package, -40°C to +85°C industrial temperature range, 10kΩ end-to-end resistance, 3-wire up/down interface timing (tIW ≤5µs), and nonvolatile store/reload capability on power-up.

Technical Context

The X9317ZV8I-2.7 integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 100 discrete taps. Its resistor array uses 99 series elements with make-before-break switching, ensuring continuity during wiper transitions without open-circuit risk.

Control logic responds to CS (chip select), U/D (direction), and edge-triggered INC inputs. Wiper position is stored in nonvolatile memory only when CS rises while INC is HIGH - a deterministic, single-event store mechanism that avoids accidental writes during system initialization or noise events.

Key Specifications

Pinout & Package

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

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 X9317ZV8I-2.7 uniquely combines 100-tap resolution, 3-wire simplicity, and guaranteed power-up recall - eliminating firmware dependencies for critical bias settings in unattended industrial systems.

Availability

X9317ZV8I-2.7 is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias control, and voltage regulator output control requiring stable component supply across industrial temperature ranges and long-term calibration retention.

Supply support for X9317ZV8I-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 infrastructure markets.

The X9317 family was designed specifically for high-reliability analog trimming in industrial and automotive subsystems - emphasizing nonvolatile retention, temperature stability, and minimal GPIO footprint for resource-constrained controllers.

FAQ

What is the operating temperature range for the X9317ZV8I-2.7?

The X9317ZV8I-2.7 is rated for -40°C to +85°C, qualifying it for industrial-grade applications including motor drives, PLC modules, and automotive cabin electronics. This range is confirmed in the Ordering Information table on page 2 of the FN8183 Rev.10.01 datasheet, where "X9317ZV8I-2.7" maps to the "-40 to +85" column under Temperature Range. The device maintains full specification compliance-including wiper linearity, resistance tolerance, and nonvolatile endurance-across this entire span.

Does the X9317ZV8I-2.7 support automatic wiper position recall on power-up?

Yes, the X9317ZV8I-2.7 automatically recalls the last stored wiper position from nonvolatile memory upon power-up, as stated in the device overview on page 1 and verified in the Principles of Operation section on page 8. This behavior requires no external components or host initialization. The stored value persists for 100 years per JEDEC standards, and the recall occurs within 5µs after VCC stabilizes, per the tPU parameter on page 6.

What package type and dimensions does the X9317ZV8I-2.7 use?

The X9317ZV8I-2.7 uses an 8-lead TSSOP package per JEDEC MO-153 AC standard, designated M8.173 in Renesas documentation. Its dimensions are 4.40mm × 3.0mm body size, 0.65mm lead pitch, and 1.20mm maximum height, as shown in the Package Outline Drawing on page 12. Pin 1 identification is marked with "AKZ" per the Ordering Information table on page 2.

How is nonvolatile storage triggered on the X9317ZV8I-2.7?

Nonvolatile storage on the X9317ZV8I-2.7 is triggered by a rising edge on the CS pin while the INC pin is held HIGH, as defined in the Mode Selection table on page 9 and Pin Descriptions on page 8. This single-event condition ensures deterministic, noise-immune writes. The store cycle completes in 5–10ms (tWR), after which the device enters standby mode. No additional clock or command sequence is required.

What is the maximum wiper current rating for the X9317ZV8I-2.7 at 2.7V supply?

At VCC = 2.7V, the X9317ZV8I-2.7 supports a maximum wiper current (IW) of ±4.4mA, as specified in the Potentiometer Specifications table on page 4. This limit applies regardless of wiper position and ensures safe operation when used as a two-terminal variable resistor in current-sense or bias-setting applications. Exceeding this current risks exceeding the 10mW power rating for 10kΩ devices.