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NXP Semiconductors PCA8576DU/2DA/Q2,0
- Part No.:
- PCA8576DU/2DA/Q2,0
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- Die
- Datasheet:
-
PCA8576DU/2DA/Q2,0.pdf
- Description:
- IC DRVR 7 SEGMENT DIE
- Quantity:
- Payment:
- Shipping:
Inventory:4,523
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Product details
Overview
PCA8576DU/2DA/Q2,0 from NXP Semiconductors is an AEC-Q100 qualified automotive LCD segment driver IC that interfaces microcontrollers with static or low-multiplex-rate LCDs (up to 4 backplanes and 40 segments), supports 1:4 multiplexing with 1⁄3 bias, operates from 1.8 V to 5.5 V logic supply, and delivers up to 160 display elements in automotive instrument clusters and HVAC panels.
For engineers reviewing the PCA8576DU/2DA/Q2,0 datasheet, PCA8576DU/2DA/Q2,0 pinout, PCA8576DU/2DA/Q2,0 application, or PCA8576DU/2DA/Q2,0 equivalent, this page provides verified technical context, I²C-bus timing behavior, display RAM mapping for 1:4 multiplex mode, VLCD biasing constraints, and cascade synchronization requirements - all confirmed from NXP's Rev. 2 (2013) product data sheet.
Technical Context
The PCA8576DU/2DA/Q2,0 implements a dedicated LCD controller with integrated voltage-follower LCD bias generator and 40 × 4-bit static display RAM. Its I²C-bus interface runs at up to 400 kHz and supports hardware subaddressing (A0–A2) and SA0 for device selection in multi-device systems.
It generates time-multiplexed drive waveforms synchronized to either internal oscillator (OSC tied to VSS) or external clock (OSC tied to VDD), with frame frequency fixed at fclk/24. Output bank switching enables dual-bank display updates in static and 1:2 modes, while SYNC pin coordinates cascaded timing across up to 64 devices (2560 total elements).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Display Capacity | Up to 4 backplanes × 40 segments = 160 elements; supports 20×7-segment digits or 10×14-segment alphanumerics. |
| I²C-Bus Speed | 400 kHz maximum; enables low-overhead communication with host MCU without CPU polling. |
| Supply Voltage Range | 1.8 V to 5.5 V for logic (VDD); independent VLCD from 2.5 V to 6.5 V for LCD panel compatibility. |
| Multiplex Modes | Static, 1:2, 1:3, or 1:4; auto-configured via command register; 1:4 mode uses all four BP0–BP3 outputs. |
| Display RAM | 40 × 4-bit static RAM; bit-map aligned to segment outputs S0–S39 and backplane rows BP0–BP3. |
| Frame Frequency | Fixed at fCLK/24; e.g., 576 kHz CLK yields 24 Hz frame rate - sufficient for flicker-free automotive displays. |
| Blink Control | Hardware-selectable blink frequencies (1/2, 1/4, 1/8, 1/16 of fCLK) plus per-segment blinking in static/1:2 modes. |
Pinout & Package
Bare die package (59 bumps) with flip-chip mounting; substrate connected to VSS and electrically isolated per NXP mechanical specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA (pins 1, 58, 59) | I²C-bus bidirectional data line | Tri-state open-drain; requires external pull-up; supports auto-incremented RAM writes across subaddress boundaries. |
| SCL (pins 2, 3) | I²C-bus clock input | Drives internal timing; synchronizes display RAM access and command decoding. |
| OSC (pin 7) | Oscillator enable control | Tie to VSS for internal 576 kHz oscillator; tie to VDD for external clock input on CLK pin. |
| SYNC (pin 4) | Cascade synchronization I/O | Resets multiplex sequence timing across daisy-chained devices; ensures frame alignment in large LCD systems. |
| BP0–BP3 (pins 14–17) | LCD backplane drive outputs | Active in selected multiplex mode; in 1:4 mode, each drives one unique backplane waveform; in static mode, all carry identical signal. |
| S0–S39 (pins 18–57) | LCD segment drive outputs | Direct connection to LCD glass; output state determined by display RAM bit-map and current multiplex phase. |
| A0–A2 (pins 8–10), SA0 (pin 11) | Hardware subaddress inputs | Set 3-bit device address (A0–A2) and LSB (SA0) for I²C slave addressing in multi-device configurations. |
| VDD (pin 6), VSS (pin 12), VLCD (pin 13) | Power supply terminals | VDD powers logic core; VSS is ground reference; VLCD supplies LCD bias network - must be stable and low-impedance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualification | Validated for automotive temperature range (−40 °C to +105 °C) and reliability stress testing - suitable for dashboard instrumentation. |
| Internal LCD bias generation | Voltage-follower buffers eliminate need for external resistive divider; supports 1⁄2 or 1⁄3 bias for 1:2/1:3/1:4 multiplexing. |
| Auto-incremented RAM loading | Data pointer increments by 2 (1:4), 3 (1:3), 4 (1:2), or 8 (static) per byte - enables efficient full-display refresh without address retransmission. |
| Cascadable architecture | SYNC pin and subaddress counter allow seamless chaining of up to 64 PCA8576D devices for >2500-element displays without software overhead. |
| Dual-bank display memory | Independent input/output bank selectors permit background RAM update in static/1:2 modes - enables flicker-free display transitions. |
Applications
| Automotive Instrument Cluster | HVAC Control Panel |
|---|---|
Use Scenario: Driving digital speedometer, fuel gauge, and warning icons in vehicle dashboards under wide temperature and EMI conditions. IC Role / Device Role / Timing Role: Primary LCD segment driver managing 40 segments across 4 backplanes; generates precise 1:4 multiplex waveforms synchronized to internal oscillator. Use Value: AEC-Q100 compliance ensures operation at −40 °C to +105 °C; integrated bias generator eliminates 6+ external components; 400 kHz I²C reduces MCU firmware load. |
Use Scenario: Displaying temperature setpoints, fan speed, and mode indicators on automotive climate control units. IC Role / Device Role / Timing Role: Dedicated LCD controller interfacing with 8-bit MCU over I²C; handles 14-segment alphanumeric characters and custom icons using 40×4 RAM. Use Value: Dual-bank memory allows smooth transition between "current temp" and "set temp" screens; VLCD range (2.5–6.5 V) supports both low-threshold and twisted-nematic LCD modules. |
| Industrial Control Panel | Medical Device Display |
Use Scenario: Operator interface for programmable logic controllers (PLCs) requiring reliable, low-power segmented display in factory environments. IC Role / Device Role / Timing Role: Standalone LCD driver handling static or 1:2 multiplexed displays; uses external clock (CLK) for deterministic timing in noise-sensitive settings. Use Value: Independent VDD/VLCD rails isolate logic noise from LCD bias; no external components required simplifies BOM and improves long-term stability. |
Use Scenario: Vital sign monitor displaying pulse rate, SpO₂, and battery status on compact, low-power portable equipment. IC Role / Device Role / Timing Role: Low-voltage LCD driver operating from 1.8 V logic supply; manages 7-segment digits and status LEDs via segment outputs S0–S39. Use Value: 1.8 V minimum VDD enables direct connection to Li-ion battery-powered systems; blink control supports attention-grabbing alarm states without MCU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD segment driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCF8576T/1,118 | Same 40×4 RAM, 1:4 multiplex, and I²C interface; but lacks AEC-Q100 qualification and has narrower VLCD range (3.0–5.5 V). | Targeted at industrial/consumer displays only; not validated for automotive thermal cycling or humidity testing. | Select when AEC-Q100 is unnecessary and VLCD ≤ 5.5 V suffices; pin-compatible but requires revalidation of bias network. |
| MAX6955ATL+ | 40-segment LED/LCD driver with integrated charge pump; supports higher VLCD (up to 7 V); uses SPI instead of I²C. | Designed for mixed LED/LCD panels; includes built-in brightness control and error detection - adds complexity for pure LCD use. | Choose when system already uses SPI peripherals or requires >6.5 V VLCD; not drop-in due to interface and bias architecture differences. |
Compared with PCF8576T/1,118 and MAX6955ATL+, the PCA8576DU/2DA/Q2,0 uniquely combines AEC-Q100 compliance, 2.5–6.5 V VLCD flexibility, and bare-die form factor for space-constrained automotive modules - making it irreplaceable where qualification and packaging are mandatory.
Availability
PCA8576DU/2DA/Q2,0 is available at Aetrix Electronics and suitable for automotive instrument clusters, HVAC control panels, and industrial HMI applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PCA8576DU/2DA/Q2,0 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 focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in mixed-signal ASICs and automotive-qualified ICs.
The PCA8576D product line was designed specifically for cost-sensitive, high-reliability automotive LCD interfaces - delivering integrated bias generation, cascade scalability, and AEC-Q100 compliance in minimal footprint packages.
FAQ
What is the minimum logic supply voltage supported by the PCA8576DU/2DA/Q2,0?
The PCA8576DU/2DA/Q2,0 supports a logic supply (VDD) range of 1.8 V to 5.5 V. At 1.8 V, it maintains full functionality including I²C-bus communication at reduced speed, display RAM access, and LCD drive capability - enabling direct integration with ultra-low-power microcontrollers in battery-operated automotive subsystems. The PCA8576DU/2DA/Q2,0 datasheet confirms operation down to 1.8 V across the full temperature range.
How does the PCA8576DU/2DA/Q2,0 handle cascading multiple devices for large LCDs?
The PCA8576DU/2DA/Q2,0 uses the SYNC pin to align frame timing across daisy-chained devices and the subaddress counter (A0–A2, SA0) to route I²C data to specific units. When display RAM fills, auto-incremented addressing wraps to the next device's subaddress - enabling seamless 2560-element expansion without MCU address management. This behavior is explicitly defined in Section 7.12 of the PCA8576DU/2DA/Q2,0 datasheet.
Can the PCA8576DU/2DA/Q2,0 drive a 1:3 multiplexed LCD with 1⁄2 bias?
No - the PCA8576DU/2DA/Q2,0 supports only 1⁄2 bias in 1:2 multiplex mode and 1⁄3 bias in 1:2, 1:3, and 1:4 modes. Table 6 of the PCA8576DU/2DA/Q2,0 datasheet lists discrimination ratios exclusively for 1:3/1⁄3 and 1:4/1⁄3 configurations; no 1:3/1⁄2 option is implemented in the bias generator or command set.
What happens to the display outputs during power-on reset of the PCA8576DU/2DA/Q2,0?
At power-on, the PCA8576DU/2DA/Q2,0 resets all backplane (BP0–BP3) and segment (S0–S39) outputs to VLCD, disables the display (E = 0), initializes the I²C-bus interface, clears the data pointer and subaddress counter, and configures default 1:4 multiplex with 1⁄3 bias. I²C transfers must be delayed ≥1 ms after VDD stabilization to ensure reset completion - a requirement specified in Section 7.1 of the PCA8576DU/2DA/Q2,0 datasheet.
Is the PCA8576DU/2DA/Q2,0 pinout compatible with other members of the PCA8576 family?
Yes - the PCA8576DU/2DA/Q2,0 shares identical bump layout and signal assignment with PCA8576DU and PCA8576D variants, as confirmed by Figure 2 (Pinning diagram for PCA8576DU) in the PCA8576DU/2DA/Q2,0 datasheet. All 59 bumps maintain consistent function mapping, including SDA redundancy (pins 1, 58, 59) and dedicated SYNC/OSC pins - enabling direct substitution within bare-die assembly processes.
PCA8576DU/2DA/Q2,0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tray
- 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:
- 3.5 µA
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
PCA8576DU/2DA/Q2,0 FAQ
1.How can I place an order for PCA8576DU/2DA/Q2,0 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA8576DU/2DA/Q2,0 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 PCA8576DU/2DA/Q2,0 reliable?
The price and inventory of PCA8576DU/2DA/Q2,0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA8576DU/2DA/Q2,0 is usually 5 days.
3.What payment methods are accepted for PCA8576DU/2DA/Q2,0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA8576DU/2DA/Q2,0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA8576DU/2DA/Q2,0?
PCA8576DU/2DA/Q2,0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA8576DU/2DA/Q2,0 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 PCA8576DU/2DA/Q2,0?
For technical support, including PCA8576DU/2DA/Q2,0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA8576DU/2DA/Q2,0 requirements.
6.How does Aetrix verify that PCA8576DU/2DA/Q2,0 is sourced from the original manufacturer or authorized distributors?
All PCA8576DU/2DA/Q2,0 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 PCA8576DU/2DA/Q2,0 meets industry standards.
7.What is the process for return or replacement of PCA8576DU/2DA/Q2,0?
All PCA8576DU/2DA/Q2,0 units undergo pre-shipment inspection (PSI). If there is an issue with PCA8576DU/2DA/Q2,0, 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 PCA8576DU/2DA/Q2,0 part is unused and in its original packaging.
Return procedure for PCA8576DU/2DA/Q2,0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA8576DU/2DA/Q2,0 Tags
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