NXP Semiconductors PCF85162T/1,118

Overview

PCF85162T/1,118 from NXP Semiconductors is a 32 × 4 universal LCD driver IC for low-multiplex-rate displays, supporting static, 2-, 3-, or 4-backplane configurations with selectable 1/2 or 1/3 bias. It integrates 32 segment drivers and 4 backplane outputs, features 32 × 4-bit display RAM with auto-increment addressing, and communicates via a 400 kHz I²C-bus interface. It is used in industrial control panels, portable instrumentation, and consumer appliance displays requiring compact, low-power LCD drive capability.

For engineers reviewing the PCF85162T/1,118 datasheet, PCF85162T/1,118 pinout, PCF85162T/1,118 application, or PCF85162T/1,118 equivalent, this device delivers verified static-to-1:4 multiplex drive support, internal LCD bias generation, independent logic/LCD supply rails (1.8–5.5 V logic / up to 6.5 V VLCD), and cascading capability for larger displays - all in a TSSOP48 package rated for -40 °C to +85 °C operation.

Technical Context

The PCF85162T/1,118 implements a fully integrated LCD controller/driver with hardware subaddressing, display memory bank switching for static and duplex modes, and programmable blinking (normal or alternate-RAM-bank) derived from its clock source. Its internal oscillator (enabled by OSC→VSS) or external CLK input determines frame timing, and SYNC supports synchronized cascading of multiple devices.

It uses a 32 × 4-bit static RAM mapped directly to 32 segment outputs (S0–S31) and 4 backplane outputs (BP0–BP3), with row-to-backplane and column-to-segment correspondence. Drive waveforms are generated per selected mode (static, 1:2, 1:3, or 1:4), and bias voltage selection (1/2 or 1/3) is configured via the mode-set command - with 1/3 bias defaulting in 1:4 mode.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1), 48-pin plastic thin shrink small outline, 0.5 mm pitch, 6.1 mm body width.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LCD driver applications.

Compared with PCF85162T/1Y, the PCF85162T/1,118 offers identical drive capability but differs in packaging (non-dry-pack reel); versus PCF8576CT, it adds internal oscillator, SYNC-based cascading, and extended VLCD range - making it superior for autonomous, scalable LCD systems.

Availability

PCF85162T/1,118 is available at Aetrix Electronics and suitable for industrial control panels, portable test equipment, and consumer appliance interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PCF85162T/1,118 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

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in interface, power management, and display technologies.

The PCF85162T/1,118 belongs to NXP's legacy LCD segment driver product line, designed specifically for cost-effective, low-power, microcontroller-offloaded alphanumeric and segment-based display systems in industrial and consumer equipment.

FAQ

What is the primary function of the PCF85162T/1,118 in an LCD system?

The PCF85162T/1,118 serves as a complete 32 × 4 universal LCD controller and driver IC. It generates precise multiplexed backplane and segment waveforms, manages 32 × 4-bit display RAM, handles I²C communication, and produces internal LCD bias voltages - eliminating the need for external timing or bias components in the PCF85162T/1,118-based design.

Does the PCF85162T/1,118 require an external crystal or oscillator?

No. The PCF85162T/1,118 includes an internal oscillator enabled by connecting the OSC pin to VSS. When enabled, it drives the CLK pin with a stable clock signal usable for cascading. An external clock may be applied to CLK only if OSC is tied to VDD - the PCF85162T/1,118 does not require external crystals, RC networks, or oscillators under standard operation.

How does the PCF85162T/1,118 support display blinking without MCU intervention?

The PCF85162T/1,118 implements hardware-based blinking using its display RAM bank switching feature. In static or 1:2 multiplex modes, the blink-select command configures alternate RAM bank toggling at programmable frequencies - updating the entire display state autonomously. This occurs independently of the I²C bus, reducing MCU overhead and ensuring consistent blink timing in the PCF85162T/1,118.

Can the PCF85162T/1,118 drive high-threshold LCDs such as guest-host or twisted nematic types?

Yes. The PCF85162T/1,118 supports VLCD up to 6.5 V, enabling direct drive of high-threshold guest-host and twisted nematic LCDs. Its internal bias generator scales fractional bias (1/2 or 1/3) from VLCD, and the wide VLCD range ensures sufficient RMS on-voltage (e.g., 0.577 × VLCD in 1:4 mode) for reliable contrast - a key capability confirmed in the PCF85162T/1,118 datasheet.

What is the significance of the "/1,118" suffix in PCF85162T/1,118?

The "/1,118" suffix denotes a specific ordering variant of the PCF85162T: it indicates TSSOP48 packaging, non-dry-pack reel (13-inch q1 non dry pack), minimum order quantity of 2000 units, and industrial temperature grade (-40 °C to +85 °C). This distinguishes it from other variants like PCF85162T/1Y (dry-pack) while maintaining full functional and pinout compatibility with the PCF85162T/1,118.