My Inquiry
My Account
NXP Semiconductors PCF8576DT/2,118
- Part No.:
- PCF8576DT/2,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PCF8576DT/2,118.pdf
- Description:
- IC DRVR 7 SEGMENT 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,585
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PCF8576DT/2,118 from NXP Semiconductors is a 40 × 4 universal LCD driver IC for low-multiplex-rate static and multiplexed displays, supporting up to four backplanes and 40 segments, with I²C-bus interface (400 kHz), 1.8 V to 5.5 V logic supply, and internal LCD bias generation. It is used in industrial panel meters and embedded instrumentation displays requiring compact segment drive capability.
For engineers reviewing the PCF8576DT/2,118 datasheet, PCF8576DT/2,118 pinout, PCF8576DT/2,118 application, or PCF8576DT/2,118 equivalent, key selection criteria include its TSSOP56 package, 40-segment/4-backplane drive architecture, selectable 1:2/1:3/1:4 multiplex modes, and compatibility with chip-on-glass LCD modules in temperature ranges from −40 °C to +85 °C.
Technical Context
The PCF8576DT/2,118 integrates a display RAM controller, LCD bias generator, and I²C interface to manage static or multiplexed LCD waveforms without external components. Its internal oscillator (enabled via OSC–VSS) or external clock (via CLK) drives frame timing, while subaddressing (A0–A2) and bank switching enable cascading across multiple devices.
It supports configurable LCD bias (static, 1/2, or 1/3), independent VLCD and VDD supplies (VLCD up to 6.5 V), and auto-incremented RAM addressing aligned to drive mode - incrementing by 8 (static), 4 (1:2), 3 (1:3), or 2 (1:4) per byte written.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Display Drive Capacity | 40 segments × 4 backplanes = 160 total elements; supports 20×7-seg or 10×14-seg alphanumeric displays |
| I²C Interface Speed | 400 kHz maximum; minimizes host MCU overhead with auto-incremented addressing and hardware subaddressing |
| Supply Voltage Range | VDD: 1.8 V to 5.5 V; VLCD: 2.5 V to 6.5 V - enables direct drive of low- and high-threshold twisted nematic LCDs |
| Multiplex Modes | Selectable 1:1 (static), 1:2, 1:3, or 1:4; each mode configures backplane output timing and bias voltage division |
| Display RAM | 40 × 4-bit static RAM with one-to-one mapping to S0–S39 and BP0–BP3; stores on/off state per segment/backplane combination |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial-grade embedded applications with stable long-term LCD contrast |
Pinout & Package
TSSOP56 package (SOT364-1), plastic thin shrink small outline, 56 leads, 6.1 mm body width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| S0–S39 | LCD segment outputs | Direct drive connections to LCD segment electrodes; unused pins may be left open |
| BP0–BP3 | LCD backplane outputs | Drive signals for up to 4 backplanes; BP0–BP3 can be paralleled in static mode for higher current |
| SDA / SCL | I²C-bus data/clock | Two-wire bidirectional interface; supports standard-mode (100 kHz) and fast-mode (400 kHz) operation |
| OSC | Oscillator enable input | Connect to VSS to enable internal oscillator; connect to VDD to use external clock on CLK pin |
| SYNC | Cascade synchronization | Input/output for frame alignment across multiple PCF8576D devices; must be left open if unused |
| A0–A2 / SA0 | Subaddress inputs | Hardware address bits for device selection in multi-device I²C systems; enable cascaded RAM addressing |
| VDD / VSS / VLCD | Power supplies | VDD powers logic core; VSS is ground reference; VLCD powers LCD segment/backplane drivers independently |
Key Features
| Feature | Design Value |
|---|---|
| Internal LCD bias generation | Eliminates need for external resistor networks or charge pumps; supports 1/2 or 1/3 bias configurations via command register |
| Auto-incremented RAM addressing | Reduces I²C transaction count during full-display updates; pointer increments by mode-specific step (2–8) after each byte write |
| Display memory bank switching | Enables dual-frame buffering in static/duplex modes - allows flicker-free display updates without visible tearing |
| Versatile blinking control | Independent blink enable per backplane group; supports global or partial blink for status indicators and alarms |
| Cascadable architecture | SYNC pin and subaddressing allow up to 2,560 segments (64 devices) in single I²C chain with automatic wrap-around addressing |
Applications
| Industrial Panel Meters | Embedded Instrumentation Displays |
|---|---|
Use Scenario: Digital multimeters and process controllers displaying real-time voltage, current, or pressure readings using 7-segment numeric LCDs. IC Role / Device Role / Timing Role: Primary LCD segment driver managing 16–20 digits via 1:4 multiplex mode with internal bias generation and I²C host interface. Use Value: Reduces BOM count by eliminating external bias resistors and simplifies firmware with auto-incremented RAM writes and subaddressed cascading. | Use Scenario: HVAC control panels and programmable logic controller (PLC) HMI modules showing alphanumeric status messages and setpoints. IC Role / Device Role / Timing Role: Universal LCD controller driving 14-segment alphanumeric characters with selectable 1:2 or 1:3 multiplexing and independent VLCD adjustment. Use Value: Enables flexible display layout reuse across product variants using same PCB footprint and firmware abstraction layer. |
| Portable Test Equipment | Energy Metering Displays |
Use Scenario: Handheld oscilloscopes and signal generators with segmented LCDs showing waveform parameters and menu navigation. IC Role / Device Role / Timing Role: Low-power LCD driver operating from 3.3 V logic supply while delivering 6.5 V VLCD for high-contrast twisted nematic displays. Use Value: Supports battery-powered operation with <100 µA standby current and wide VDD range (1.8–5.5 V) for direct Li-ion or coin-cell compatibility. | Use Scenario: Smart electricity meters with multi-line LCDs showing kWh consumption, tariff zones, and communication status icons. IC Role / Device Role / Timing Role: Dual-role driver handling both numeric fields and custom icon segments (e.g., RF, GPRS, tamper flags) using 40×4 RAM mapping. Use Value: Allows simultaneous update of numeric values and status symbols via bank-switched display memory, avoiding visual artifacts during refresh. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCF85176T/1 | Successor part with identical TSSOP56 package, enhanced ESD rating (±4 kV HBM), and extended I²C timeout handling | Qualified for new industrial designs; replaces PCF8576DT/2 series per NXP PCN202102010F01 | Select for production releases requiring long-term availability and improved robustness in noisy environments |
| PCA85176T/Q900/1 | AEC-Q100 Grade 2 qualified (−40 °C to +105 °C); identical functional block diagram but automotive-qualified screening and traceability | Required for automotive instrument clusters and center-stack displays meeting automotive reliability standards | Choose only when AEC-Q100 compliance and extended temperature operation are mandatory |
Compared with PCF8576DT/2,118, PCF85176T/1 offers drop-in replacement capability for industrial upgrades with better fault tolerance, while PCA85176T/Q900/1 adds automotive qualification at the cost of higher unit price and longer lead times - neither is pin-compatible with legacy PCF8576D without validation of timing margins and bias calibration.
Availability
PCF8576DT/2,118 is available at Aetrix Electronics and suitable for industrial panel meters, embedded instrumentation displays, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PCF8576DT/2,118 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The PCF8576D family was designed specifically for cost-sensitive, low-power embedded LCD interfaces in industrial and portable equipment - emphasizing integration (no external bias components), I²C efficiency, and flexible multiplex configuration.
FAQ
What is the maximum number of LCD segments the PCF8576DT/2,118 can drive?
The PCF8576DT/2,118 drives up to 40 segments and 4 backplanes, supporting a total of 160 LCD elements. This enables configurations such as 20 seven-segment digits, 10 fourteen-segment alphanumeric characters, or arbitrary graphics layouts - all within a single TSSOP56 package without external components. The PCF8576DT/2,118 achieves this using its 40 × 4-bit display RAM and time-multiplexed backplane signaling.
Does the PCF8576DT/2,118 require external bias resistors for LCD operation?
No, the PCF8576DT/2,118 includes an integrated LCD bias generator that produces fractional bias voltages (static, 1/2, or 1/3) from the VLCD supply, eliminating the need for external resistor networks or charge pumps. This internal generation is configured via command registers and adapts automatically to the selected multiplex mode (1:1, 1:2, 1:3, or 1:4). The PCF8576DT/2,118 thus reduces bill-of-materials count and layout complexity in space-constrained designs.
Can multiple PCF8576DT/2,118 devices be cascaded, and how is synchronization handled?
Yes, multiple PCF8576DT/2,118 devices can be cascaded using the SYNC pin for frame synchronization and A0–A2/SA0 subaddressing for I²C device selection. The SYNC signal ensures simultaneous LCD frame updates across all devices, preventing visual tearing. Subaddressing enables automatic RAM address wrap-around - when display data exceeds one device's 40×4 RAM, it flows seamlessly into the next. The PCF8576DT/2,118 supports up to 64 devices (2,560 segments) in a single chain.
What are the power supply requirements for the PCF8576DT/2,118?
The PCF8576DT/2,118 requires three supplies: VDD (1.8 V to 5.5 V) for logic operation, VSS (ground), and VLCD (2.5 V to 6.5 V) for LCD segment and backplane drive. Independent VLCD allows optimization for specific LCD thresholds - e.g., 2.5 V for low-threshold glass or 6.5 V for high-threshold twisted nematic modules. The PCF8576DT/2,118 draws minimal quiescent current, supporting battery-powered applications with extended runtime.
Is the PCF8576DT/2,118 suitable for new designs, and what is its replacement path?
No - NXP explicitly states PCF8576DT/2 should not be used for new design-ins. The documented industrial replacement is PCF85176T/1, which offers identical pinout, enhanced ESD performance, and updated I²C timing behavior per PCN202102010F01. For automotive applications, PCA85176T/Q900/1 is the designated AEC-Q100-compliant successor. The PCF8576DT/2,118 remains available for legacy support and existing production, but new projects should evaluate the PCF85176T/1 migration path.
PCF8576DT/2,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Display Type:
- LCD
- Configuration:
- 7 Segment + DP, 14 Segment + DP + AP, Dot Matrix
- Interface:
- I2C
- Digits or Characters:
- 10 Characters, 20 Characters, 160 Elements
- Current - Supply:
- 8 µA
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
PCF8576DT/2,118 FAQ
1.How can I place an order for PCF8576DT/2,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCF8576DT/2,118 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PCF8576DT/2,118 reliable?
The price and inventory of PCF8576DT/2,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCF8576DT/2,118 is usually 5 days.
3.What payment methods are accepted for PCF8576DT/2,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCF8576DT/2,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCF8576DT/2,118?
PCF8576DT/2,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCF8576DT/2,118 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PCF8576DT/2,118?
For technical support, including PCF8576DT/2,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCF8576DT/2,118 requirements.
6.How does Aetrix verify that PCF8576DT/2,118 is sourced from the original manufacturer or authorized distributors?
All PCF8576DT/2,118 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PCF8576DT/2,118 meets industry standards.
7.What is the process for return or replacement of PCF8576DT/2,118?
All PCF8576DT/2,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCF8576DT/2,118, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PCF8576DT/2,118 part is unused and in its original packaging.
Return procedure for PCF8576DT/2,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCF8576DT/2,118 Tags
-
PCA8561AHN/AY
NXP Semiconductors
-
SN74LS47N
Texas Instruments
-
PCF85176T/1Y
NXP Semiconductors
-
PCF85176H/1,518
NXP Semiconductors
-
BU9796AMUV-E2
Rohm Semiconductor
-
PCA85176H/Q900/1,5
NXP Semiconductors
-
PCF8537AH/1,518
NXP Semiconductors
-
LM3914VX/NOPB
Texas Instruments
-
PCF85134HL/1,118
NXP Semiconductors
-
AS1115-BSST
ams-OSRAM USA INC.
-
PCA8534AH/Q900/1,5
NXP Semiconductors
-
LM3914V/NOPB
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
