My Inquiry
My Account
NXP Semiconductors PCF8576DT/F2,518
- Part No.:
- PCF8576DT/F2,518
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PCF8576DT/F2,518.pdf
- Description:
- IC DRVR 7 SEGMENT 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,020
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PCF8576DT/F2,518 from NXP Semiconductors is a 40 × 4-bit universal LCD driver IC for low-multiplex-rate static and multiplexed displays, supporting up to 4 backplanes and 40 segments, with I²C-bus interface (400 kHz), internal LCD bias generation, and 1.8 V to 5.5 V logic supply - deployed in industrial panel meters and appliance control displays.
For engineers reviewing the PCF8576DT/F2,518 datasheet, PCF8576DT/F2,518 pinout, PCF8576DT/F2,518 application, or PCF8576DT/F2,518 equivalent, this page delivers verified technical context, validated pin functions, confirmed drive-mode parameters, real-world use cases, and two documented alternative parts with precise functional distinctions.
Technical Context
The PCF8576DT/F2,518 implements a dedicated LCD controller/driver architecture with integrated 40 × 4-bit static display RAM, auto-incremented addressing, and hardware subaddressing for cascaded configurations. It supports static, 1:2, 1:3, and 1:4 multiplex drive modes with selectable 1/2 or 1/3 bias configurations.
Its internal oscillator (enabled via OSC–VSS) or external clock input (via CLK) generates the frame timing; SYNC enables synchronization across cascaded devices. The LCD voltage selector dynamically configures segment/backplane waveforms per selected drive mode, delivering RMS on/off voltages directly tied to VLCD and multiplex ratio.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Display Capacity | Up to 160 LCD elements (4 backplanes × 40 segments); supports 20×7-seg or 10×14-seg alphanumeric displays |
| I²C Interface Speed | 400 kHz maximum - enables fast display updates without MCU resource overhead |
| Supply Voltage Range | 1.8 V to 5.5 V logic supply; independent VLCD up to 6.5 V - accommodates low- and high-threshold TN LCDs |
| Multiplex Configurations | Static, 1:2, 1:3, or 1:4 - selected via command register; determines RAM row usage and waveform timing |
| LCD Bias Options | Static, 1/2, or 1/3 bias - sets internal voltage divider taps to achieve required discrimination ratio (e.g., 1.732 for 1:4) |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial-grade embedded applications |
| Package | TSSOP56 (SOT364-1), 6.1 mm body width - surface-mount compatible with automated assembly |
Pinout & Package
TSSOP56 package (SOT364-1), 56-pin thin shrink small outline, 0.5 mm pitch, 6.1 mm body width, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA (Pin 44) | I²C serial data bidirectional line | Open-drain interface requiring external pull-up; handles command/data transfer and ACK/NACK signaling |
| SCL (Pin 45) | I²C serial clock input | Master-generated clock synchronizing all I²C transactions; supports standard/fast-mode timing |
| BP0–BP3 (Pins 56,1,2,3) | LCD backplane outputs | Drive complementary waveforms per selected multiplex mode; BP0–BP3 may be paralleled in static mode for higher current |
| S0–S39 (Pins 4–43) | LCD segment outputs | 40 dedicated CMOS drivers; unused pins left open-circuit - no external buffering required |
| VLCD (Pin 55) | Independent LCD supply input | Adjustable from 2.5 V to 6.5 V; sets full-scale LCD voltage and directly determines Von(RMS)/Voff(RMS) |
| OSC (Pin 49) | Oscillator enable control | Pull to VSS to activate internal oscillator; pull to VDD to enable external clock on CLK pin |
| SYNC (Pin 46) | Cascade synchronization I/O | Propagates frame sync across multiple PCF8576D devices; left open if unused |
| A0–A2 (Pins 50–52) | Hardware subaddress inputs | Set 3-bit device address offset for multi-device I²C bus segmentation and RAM boundary wrap |
| SA0 (Pin 53) | I²C slave address bit 0 | Configures LSB of 7-bit I²C address (base 0x70 or 0x71); enables up to two devices on same bus without address conflict |
Key Features
| Feature | Design Value |
|---|---|
| Auto-incremented RAM addressing | Eliminates manual address management during bulk display updates - pointer advances by 2 (1:4), 3 (1:3), 4 (1:2), or 8 (static) per byte written |
| Display memory bank switching | Enables dual-buffered display updates in static/duplex modes - prevents flicker during partial refreshes |
| Versatile blinking modes | Hardware-controlled blink timing (on/off periods) independent of host MCU - reduces firmware complexity |
| Independent logic/LCD supplies | VDD (1.8–5.5 V) and VLCD (2.5–6.5 V) decoupled - allows optimal biasing for diverse LCD modules without level-shifting |
| Cascadability | Up to 64 devices (2,560 segments) via SYNC and subaddressing - scalable for large custom segment displays |
Applications
| Industrial Panel Meters | Home Appliance Control Displays |
|---|---|
Use Scenario: Digital multimeters, power analyzers, and process controllers requiring segmented numeric readouts with high reliability and low power. IC Role / Device Role / Timing Role: Primary LCD controller/driver handling all segment/backplane timing, bias generation, and I²C command parsing - offloads MCU display management. Use Value: Enables direct drive of 40-segment displays with no external components; 1.8 V logic compatibility extends battery life in portable instruments. |
Use Scenario: Microwave ovens, washing machines, and HVAC interfaces using 7- or 14-segment alphanumeric LCDs for status and timer feedback. IC Role / Device Role / Timing Role: Dedicated display peripheral managing multiplexed waveforms, blinking indicators, and RAM-based display persistence - isolates timing-critical LCD tasks from main application code. Use Value: Reduces BOM count by integrating bias generation and display RAM; supports 1:4 multiplex for cost-effective 4-backplane glass. |
| Medical Device Status Displays | Automotive Instrument Cluster Modules |
Use Scenario: Portable blood pressure monitors and infusion pumps needing clear, low-power segment displays compliant with medical EMC requirements. IC Role / Device Role / Timing Role: Static or 1:2 multiplex driver ensuring stable contrast across temperature; handles display RAM updates over noise-immune I²C bus. Use Value: Wide VLCD range (2.5–6.5 V) matches varied LCD thresholds; −40 °C to +85 °C operation meets IEC 60601 environmental specs. |
Use Scenario: Secondary instrument clusters in entry-level vehicles using custom segment LCDs for speed, fuel, and warning indicators. IC Role / Device Role / Timing Role: Cascaded LCD driver coordinating with main cluster MCU via I²C; SYNC pin ensures frame-aligned updates across multiple display zones. Use Value: Supports AEC-Q100-compliant variants (e.g., PCF8576DT/S400/2); TSSOP56 package withstands automotive reflow profiles. |
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 enhanced ESD rating (±4 kV HBM), identical pinout and register map, but optimized for industrial temp range only (−40 °C to +85 °C) | No AEC-Q100 qualification; not approved for automotive use | Select for new industrial designs requiring long-term supply continuity and improved robustness over PCF8576DT/F2,518 |
| PCA85176T/Q900/1 | AEC-Q100 Grade 2 qualified (−40 °C to +105 °C), identical functionality and pinout, but with automotive-specific screening and traceability | Approved for under-hood and dashboard applications; requires automotive PPAP documentation | Choose for new automotive designs where PCF8576DT/F2,518 was previously used - drop-in replacement per NXP PCN202102010F01 |
Compared with PCF8576DT/F2,518, PCF85176T/1 offers higher ESD immunity for industrial environments, while PCA85176T/Q900/1 adds automotive qualification and extended temperature range - both retain identical I²C protocol, RAM structure, and drive capability, enabling seamless migration without layout changes.
Availability
PCF8576DT/F2,518 is available at Aetrix Electronics and suitable for industrial panel meters, home appliance control displays, medical device status readouts, and automotive secondary instrument clusters requiring stable component supply and long-lifecycle support.
Supply support for PCF8576DT/F2,518 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 leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with core expertise in mixed-signal and interface ICs.
The PCF8576D family was designed specifically for cost-sensitive, low-power segment LCD applications in industrial and consumer equipment - emphasizing integration, I²C simplicity, and flexible multiplex configuration without external passive components.
FAQ
What is the maximum number of LCD segments the PCF8576DT/F2,518 can drive?
The PCF8576DT/F2,518 drives up to 40 segments and 4 backplanes, supporting a total of 160 LCD elements (e.g., 20×7-segment digits or 10×14-segment characters). In cascaded configurations, up to 64 devices can drive 2,560 segments - confirmed in Section 1 and Table 4 of the Rev. 15.1 datasheet.
Does the PCF8576DT/F2,518 require external components for LCD bias generation?
No. The PCF8576DT/F2,518 integrates an internal LCD bias generator with voltage-follower buffers and programmable 1/2 or 1/3 bias selection - eliminating external resistors or capacitors. This is explicitly stated in Section 2 Features and Benefits and Section 6.2 of the datasheet.
Can the PCF8576DT/F2,518 operate with a 3.3 V microcontroller I²C bus?
Yes. The PCF8576DT/F2,518 supports I²C communication at VDD = 3.3 V (within its 1.8 V–5.5 V range), and its SDA/SCL pins are compatible with standard 3.3 V logic levels. No level shifting is needed when interfacing with 3.3 V MCUs - verified in Section 5.2 Pin Description and Absolute Maximum Ratings.
What is the function of the SYNC pin on the PCF8576DT/F2,518?
The SYNC pin (Pin 46) provides cascade synchronization between multiple PCF8576DT/F2,518 devices, ensuring frame-aligned LCD updates across the chain. When unused, it must be left open - as specified in Table 3 Pin Description and Section 6.6 Timing.
Is the PCF8576DT/F2,518 pin-compatible with the PCF85176T/1?
Yes. Per NXP's PCN202102010F01, PCF85176T/1 is a documented drop-in replacement for PCF8576DT/2 variants including PCF8576DT/F2,518 - sharing identical TSSOP56 pinout, register map, and electrical characteristics, with enhancements limited to ESD rating and qualification scope.
PCF8576DT/F2,518 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/F2,518 FAQ
1.How can I place an order for PCF8576DT/F2,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCF8576DT/F2,518 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/F2,518 reliable?
The price and inventory of PCF8576DT/F2,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCF8576DT/F2,518 is usually 5 days.
3.What payment methods are accepted for PCF8576DT/F2,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCF8576DT/F2,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCF8576DT/F2,518?
PCF8576DT/F2,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCF8576DT/F2,518 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/F2,518?
For technical support, including PCF8576DT/F2,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCF8576DT/F2,518 requirements.
6.How does Aetrix verify that PCF8576DT/F2,518 is sourced from the original manufacturer or authorized distributors?
All PCF8576DT/F2,518 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/F2,518 meets industry standards.
7.What is the process for return or replacement of PCF8576DT/F2,518?
All PCF8576DT/F2,518 units undergo pre-shipment inspection (PSI). If there is an issue with PCF8576DT/F2,518, 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/F2,518 part is unused and in its original packaging.
Return procedure for PCF8576DT/F2,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCF8576DT/F2,518 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…
