My Inquiry
My Account
NXP Semiconductors PCF8576DU/DA/2,026
- Part No.:
- PCF8576DU/DA/2,026
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- Die
- Datasheet:
-
PCF8576DU/DA/2,026.pdf
- Description:
- IC DRVR 7 SEGMENT DIE
- Quantity:
- Payment:
- Shipping:
Inventory:2,956
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PCF8576DU/DA/2 from NXP Semiconductors is a bare-die 40 × 4-bit 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), internal LCD bias generation, and selectable drive modes (static, 1:2, 1:3, or 1:4). It targets embedded instrumentation, industrial control panels, and portable medical devices requiring compact, low-power segment driving.
For engineers reviewing the PCF8576DU/DA/2 datasheet, PCF8576DU/DA/2 pinout, PCF8576DU/DA/2 application, or PCF8576DU/DA/2 equivalent, key selection criteria include its wire-bond die form factor (59 bonding pads), support for independent logic/LCD supply rails (VDD = 1.8–5.5 V, VLCD = 2.5–6.5 V), static-to-1:4 multiplex configurability, and cascading capability for up to 2,560 total segments.
Technical Context
The PCF8576DU/DA/2 implements a dedicated display controller with 40 × 4-bit static RAM, auto-incremented addressing, and hardware subaddressing (A0–A2, SA0) for efficient I²C-bus data loading across cascaded devices. Its internal oscillator (enabled via OSC pin) or external clock (CLK pin) drives frame timing, while the LCD voltage selector dynamically configures bias waveforms per selected multiplex mode.
Backplane outputs (BP0–BP3) and segment outputs (S0–S39) are directly mapped to the display RAM bitmap-rows correspond to backplanes, columns to segments-with on/off states determined by RAM bit values. Display memory bank switching enables static and duplex drive modes, and versatile blinking is implemented via dedicated blinker timebase circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Display Capacity | Drives up to 40 segments × 4 backplanes = 160 LCD elements (e.g., 20×7-segment digits or 10×14-segment alphanumerics) |
| I²C Interface Speed | 400 kHz maximum - enables fast display updates without MCU resource overhead |
| Supply Voltage Range | VDD = 1.8 V to 5.5 V; supports battery-powered and mixed-voltage systems |
| LCD Supply Range | VLCD = 2.5 V to 6.5 V - accommodates low-threshold and high-threshold twisted nematic LCDs |
| Multiplex Configurations | Static, 1:2, 1:3, or 1:4 - selectable via command register; determines required backplane count and bias ratio |
| Internal Bias Generation | On-chip voltage divider with switchable 1/2 or 1/3 bias - eliminates external resistors and reduces BOM cost |
| Cascading Support | SYNC pin enables synchronized frame timing across multiple PCF8576D units - scalable to 2,560 segments |
Pinout & Package
PCF8576DU/DA/2 is supplied as a bare die in wire-bond configuration with 59 bonding pads. Mechanical layout matches Figure 3 of the official datasheet (Rev. 15.1), viewed from the active side, with alignment marks C1 and C2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA (pads 1, 58, 59) | I²C serial data bidirectional line | Carries command and display data; requires external pull-up; supports multi-master arbitration |
| SCL (pads 2, 3) | I²C serial clock input | Controls data sampling timing; must be driven by master; no internal pull-up |
| CLK (pad 5) | External clock input/output | Accepts external timing source when OSC = VDD; outputs internal oscillator signal when OSC = VSS |
| VDD (pad 6) | Logic supply voltage | Powers internal logic, I²C interface, and RAM; decoupling capacitor required near pad |
| SYNC (pad 4) | Cascade synchronization I/O | Propagates frame sync signal between daisy-chained dies; open if unused |
| OSC (pad 7) | Oscillator enable control | Connect to VSS to enable internal oscillator; connect to VDD to use external CLK |
| A0–A2 (pads 8–10) | Hardware subaddress inputs | Select device address offset within I²C bus segment; enables up to 8 daisy-chained units |
| SA0 (pad 11) | I²C bus address bit 0 | Combines with A0–A2 to define full 7-bit slave address (default 0x70 or 0x71) |
| VSS (pad 12) | Ground reference | Substrate connection point; must be electrically isolated from PCB ground plane per datasheet note |
| VLCD (pad 13) | LCD supply voltage input | Feeds internal bias generator; must be stable and low-noise; separate from VDD |
| BP0–BP3 (pads 14–17) | LCD backplane outputs | Drive common electrodes; configurable per multiplex mode; can be paralleled for higher current |
| S0–S39 (pads 18–57) | LCD segment outputs | Drive individual display elements; direct mapping to RAM columns; unused pins left open |
Key Features
| Feature | Design Value |
|---|---|
| Auto-incremented RAM addressing | Reduces I²C transaction count during bulk display updates - pointer advances by 2 (1:4), 3 (1:3), 4 (1:2), or 8 (static) bytes per write |
| Hardware subaddressing (A0–A2 + SA0) | Enables seamless cascading of up to 8 PCF8576D dies on one I²C bus without software address management |
| Independent VDD/VLCD supplies | Allows optimization of logic power efficiency and LCD contrast simultaneously - e.g., 3.3 V logic with 5.0 V VLCD for high-threshold displays |
| Display memory bank switching | Supports dual-buffer operation in static/duplex modes - enables flicker-free partial updates and blinking without CPU intervention |
| No external components required | Eliminates discrete bias resistors, capacitors, and clock crystals - reduces footprint and assembly cost in space-constrained designs |
| Power-on reset (POR) initialization | Guarantees known state (1:4 multiplex, 1/3 bias, blink off, display disabled) - simplifies firmware startup sequence |
Applications
| Industrial Control Panel | Portable Medical Device |
|---|---|
Use Scenario: Front-panel display on programmable logic controller (PLC) module showing status, setpoints, and alarms. IC Role / Device Role / Timing Role: Primary LCD controller/driver handling all segment activation, bias generation, and I²C communication with host MCU. Use Value: Enables reliable 40-segment alphanumeric display using only two MCU I²C pins and minimal external components - reducing board area and qualification effort. |
Use Scenario: Battery-powered blood glucose meter with 14-segment alphanumeric display and icon indicators. IC Role / Device Role / Timing Role: Low-power LCD driver managing static and multiplexed segments under tight energy budget constraints. Use Value: Wide VDD range (1.8–5.5 V) and ultra-low standby current allow direct operation from single Li-ion cell; internal bias eliminates calibration drift. |
| Automotive Instrument Cluster | Smart Energy Meter |
Use Scenario: Secondary information display in dashboard showing fuel economy, trip data, and service reminders. IC Role / Device Role / Timing Role: Cascaded LCD driver (with PCF8576DT/S400/2) providing synchronized frame timing across multiple display zones. Use Value: SYNC pin ensures zero-frame-skew across multiple dies - critical for consistent visual appearance in safety-critical automotive HMI. |
Use Scenario: Utility meter with multi-line LCD showing kWh, tariff, and real-time load data. IC Role / Device Role / Timing Role: Dedicated segment driver interfacing to chip-on-glass LCD panel via short bond wires. Use Value: Bare-die form factor (PCF8576DU/DA/2) enables direct COG integration - eliminates PCB routing losses and improves EMI immunity in noisy grid environments. |
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 (±8 kV HBM), updated I²C timing, and extended -40 °C to +105 °C temp range | Targeted at new industrial designs requiring longer product lifecycle and higher reliability certification | Preferred for new designs where long-term availability and AEC-Q200 compatibility are required |
| PCA85176T/Q900/1 | Automotive-qualified variant with AEC-Q100 Grade 2 compliance, qualified for 15-year automotive life, and tighter parametric tolerances | Required for automotive instrument clusters and infotainment displays meeting OEM functional safety requirements | Only suitable when AEC-Q100 qualification and automotive PPAP documentation are mandatory |
Compared with PCF8576DU/DA/2, PCF85176T/1 offers broader temperature range and improved robustness for industrial longevity, while PCA85176T/Q900/1 adds automotive-grade validation - neither is pin-compatible with the bare-die PCF8576DU/DA/2, requiring redesign of die attach and bond wire layout.
Availability
PCF8576DU/DA/2 is available at Aetrix Electronics and suitable for industrial control panels, portable medical devices, smart energy meters, and automotive secondary displays requiring stable component supply and traceable sourcing.
Supply support for PCF8576DU/DA/2 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, space-constrained embedded systems requiring flexible, low-power LCD segment driving - emphasizing integration, I²C simplicity, and cascading scalability.
FAQ
What is the package type and mounting method for PCF8576DU/DA/2?
PCF8576DU/DA/2 is supplied as a bare die in wire-bond configuration with 59 bonding pads, intended for chip-on-glass (COG) or chip-on-board (COB) assembly. It requires precision die bonding and ultrasonic wire bonding to a substrate or glass panel - not compatible with standard SMT reflow processes. The die has alignment marks C1 and C2 for placement verification per Figure 26/27 of the datasheet.
Does PCF8576DU/DA/2 support both internal and external clock sources?
Yes, PCF8576DU/DA/2 supports dual clocking: connecting OSC to VSS enables the internal oscillator (typical frequency ~120 kHz), while connecting OSC to VDD configures CLK as an external clock input. The frame rate is derived from this clock source, and CLK output can synchronize cascaded dies when internal oscillator is active - enabling precise timing across multi-die LCD systems.
How does the PCF8576DU/DA/2 handle display RAM addressing in 1:4 multiplex mode?
In 1:4 multiplex mode, the PCF8576DU/DA/2 stores each transmitted byte across four consecutive RAM rows (BP0–BP3), placing bits into columns S0–S39 with automatic pointer increment of two addresses per byte. This maps eight data bits to four 4-bit words - one per backplane - ensuring correct time-multiplexed segment activation. The RAM bitmap (Figure 12) confirms strict row=backplane, column=segment correspondence.
Can unused segment or backplane outputs be left floating on PCF8576DU/DA/2?
Unused segment outputs (S0–S39) may be left open-circuit per datasheet Section 6.8. Unused backplane outputs (BP0–BP3) may also be left open, except in specific configurations: in 1:2 mode BP0/BP2 and BP1/BP3 carry identical signals and may be paralleled; in static mode all four can be tied together for higher drive strength. Floating is permitted but paralleling improves noise immunity and current capability.
What is the minimum I²C-bus setup time required before the first data transfer after power-on for PCF8576DU/DA/2?
The PCF8576DU/DA/2 requires a minimum delay of 1 ms after power-on before initiating I²C communication, to allow Power-On Reset (POR) to complete. During this interval, all outputs default to VLCD, the drive mode initializes to 1:4 multiplex with 1/3 bias, blinking is disabled, and the display is turned off. Transferring data earlier may result in undefined behavior or corrupted RAM writes.
PCF8576DU/DA/2,026 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tray
- Product Status:
- Active
- 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:
- Die
PCF8576DU/DA/2,026 FAQ
1.How can I place an order for PCF8576DU/DA/2,026 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCF8576DU/DA/2,026 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 PCF8576DU/DA/2,026 reliable?
The price and inventory of PCF8576DU/DA/2,026 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCF8576DU/DA/2,026 is usually 5 days.
3.What payment methods are accepted for PCF8576DU/DA/2,026?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCF8576DU/DA/2,026 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCF8576DU/DA/2,026?
PCF8576DU/DA/2,026 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCF8576DU/DA/2,026 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 PCF8576DU/DA/2,026?
For technical support, including PCF8576DU/DA/2,026 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCF8576DU/DA/2,026 requirements.
6.How does Aetrix verify that PCF8576DU/DA/2,026 is sourced from the original manufacturer or authorized distributors?
All PCF8576DU/DA/2,026 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 PCF8576DU/DA/2,026 meets industry standards.
7.What is the process for return or replacement of PCF8576DU/DA/2,026?
All PCF8576DU/DA/2,026 units undergo pre-shipment inspection (PSI). If there is an issue with PCF8576DU/DA/2,026, 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 PCF8576DU/DA/2,026 part is unused and in its original packaging.
Return procedure for PCF8576DU/DA/2,026:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCF8576DU/DA/2,026 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…
