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NXP Semiconductors PCF8576DH/2,518
- Part No.:
- PCF8576DH/2,518
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- 64-TQFP
- Datasheet:
-
PCF8576DH/2,518.pdf
- Description:
- IC DRVR 7 SEGMENT 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,168
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Product details
Overview
PCF8576DH/2 from NXP Semiconductors is a universal LCD controller and driver IC designed for static or low-multiplex-rate LCDs with up to 4 backplanes and 40 segments. It integrates an internal LCD bias generator, 40 × 4-bit display RAM, I²C-bus interface (400 kHz), and supports AEC-Q100-compliant automotive operation. It drives up to 160-element displays - e.g., twenty 7-segment digits - in instrumentation clusters and automotive control panels.
For engineers reviewing the PCF8576DH/2 datasheet, PCF8576DH/2 pinout, PCF8576DH/2 application, or PCF8576DH/2 equivalent, key selection considerations include its 4-backplane multiplexing capability, selectable 1/2 or 1/3 bias configuration, cascading support for larger displays, and dual-supply flexibility (VDD: 1.8–5.5 V; VLCD: 2.5–6.5 V).
Technical Context
The PCF8576DH/2 implements a segmented LCD drive architecture with four independent backplane outputs (BP0–BP3) and forty segment drivers (S0–S39), supporting static, 1:2, 1:3, and 1:4 multiplex modes. Its internal voltage-follower-based LCD bias generator delivers precise 1/2 or 1/3 bias ratios without external components.
Timing is synchronized via internal oscillator (enabled by OSC→VSS) or external clock (CLK input), with frame frequency fixed at fclk/24. Display data loading uses auto-incremented addressing and hardware subaddressing (A0–A2), enabling seamless cascading across multiple PCF8576D devices with boundary-transparent RAM writes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Display Drive Capability | Up to 4 backplanes × 40 segments = 160 display elements; supports static, 1:2, 1:3, and 1:4 multiplex configurations. |
| I²C-Bus Interface | Standard-mode (400 kHz) bidirectional interface; requires only SDA and SCL lines plus pull-up resistors. |
| Display Memory | 40 × 4-bit static RAM; bit-map mapping directly links RAM addresses to segment outputs (S0–S39) and backplane rows (BP0–BP3). |
| LCD Bias Generation | Internal fractional bias generator providing 1/2 or 1/3 bias; no external resistors required; VLCD range: 2.5 V to 6.5 V. |
| Supply Voltage Ranges | VDD: 1.8 V to 5.5 V (logic); VLCD: 2.5 V to 6.5 V (LCD panel); independent supplies enable optimized contrast and power efficiency. |
| Operating Temperature | −40 °C to +85 °C; AEC-Q100 qualified (Grade 3) for automotive instrument cluster and body control module applications. |
| Cascading Support | SYNC pin enables synchronized frame timing across multiple devices; subaddressing (A0–A2, SA0) allows daisy-chained systems up to 2560 elements. |
Pinout & Package
TQFP64 package (SOT357-1), 10 × 10 × 1.0 mm body, 64-lead plastic thin quad flat package. Pin functions validated per NXP datasheet Rev. 7 (2008), Figure 2 and Table 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA (Pin 10) | I²C serial data line | Bidirectional open-drain interface; requires external pull-up; handles command and display data transfers. |
| SCL (Pin 11) | I²C serial clock input | Master-generated clock synchronizing all I²C transactions; supports up to 400 kHz operation. |
| BP0–BP3 (Pins 25–28) | LCD backplane outputs | Drive complementary waveforms to LCD backplanes; configurable per multiplex mode (e.g., BP0/BP2 paired in 1:2 mode). |
| S0–S39 (Pins 29–32, 34–47, 49–64, 2–7) | LCD segment outputs | 40 dedicated CMOS drivers; connect directly to LCD segment electrodes; unused pins may be left floating. |
| VLCD (Pin 21) | LCD supply voltage input | Independent analog supply for LCD bias generation; adjustable from 2.5 V to 6.5 V to match panel threshold requirements. |
| VDD (Pin 14) | Digital supply voltage | Logic core supply; operates from 1.8 V to 5.5 V; decoupling capacitor required near pin. |
| OSC (Pin 15) | Oscillator enable input | Connect to VSS to enable internal 1536 Hz oscillator; connect to VDD to use external clock on CLK pin. |
| SYNC (Pin 12) | Cascade synchronization I/O | Outputs frame sync signal when master; inputs sync from upstream device in cascade; ensures simultaneous display updates. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-incremented RAM addressing | Eliminates manual address management during bulk display data writes; pointer increments by 2–8 bytes depending on multiplex mode. |
| Hardware subaddressing (A0–A2, SA0) | Enables up to 8 uniquely addressed devices on same I²C bus; supports automatic wrap-around in cascaded systems. |
| Display memory bank switching | Allows dual-bank display preparation in static/1:2 modes; enables flicker-free content updates via single command. |
| Versatile blinking control | Full-display blink (0.5/1/2 Hz) or selective segment blink via RAM bank alternation - no host CPU overhead. |
| No external bias components | Integrated voltage-follower bias generator eliminates discrete resistor networks; reduces BOM count and layout area. |
Applications
| Automotive Instrument Clusters | Industrial Control Panels |
|---|---|
|
Use Scenario: Driving multi-digit speedometer, fuel level, and warning indicators in vehicle dashboards. IC Role / Device Role / Timing Role: Primary LCD controller/driver handling 4-backplane, 40-segment display with AEC-Q100 reliability. Use Value: Enables compact, high-contrast monochrome LCDs with minimal external components and guaranteed automotive-grade operation. |
Use Scenario: Displaying status, setpoints, and alarms on factory HMIs and programmable logic controller interfaces. IC Role / Device Role / Timing Role: Standalone LCD interface bridging microcontroller I²C bus to custom 14-segment alphanumeric or graphic LCD modules. Use Value: Reduces firmware complexity via auto-incremented RAM writes and eliminates need for external bias circuitry. |
| Consumer Appliance Displays | Medical Device Status Screens |
|
Use Scenario: Controlling oven timers, washing machine cycles, and HVAC settings on embedded appliance panels. IC Role / Device Role / Timing Role: Low-power LCD driver supporting static or 1:2 multiplex modes with wide VDD range (1.8–5.5 V) for battery or mains operation. Use Value: Delivers consistent contrast across temperature and supply variations using internal bias generation and VLCD adjustment. |
Use Scenario: Rendering critical patient parameters and operational status on portable diagnostic equipment displays. IC Role / Device Role / Timing Role: AEC-Q100-qualified display controller ensuring reliable segment activation under EMI-prone clinical environments. Use Value: Provides deterministic blink behavior and error-resilient I²C communication for safety-critical visual feedback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD controller and driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCF8576DT/2 | TSSOP56 package (56-pin, 6.1 mm width); identical electrical functionality and register map; different pinout and thermal profile. | Preferred for space-constrained PCBs where TQFP64 footprint is prohibitive; lower thermal mass but reduced heat dissipation capability. | Select PCF8576DT/2 when board area is limited and thermal load is moderate; verify mechanical clearance and reflow profile compatibility. |
| PCF8576DU/DA | Wire-bond die form (59 bonding pads); no package; requires custom assembly; same core logic and timing as PCF8576DH/2. | Used in chip-on-glass (COG) or ultra-thin embedded displays where packaging height must be minimized below 0.4 mm. | Choose PCF8576DU/DA only for COG integration or custom hybrid assemblies; requires die-level handling and wire bonding expertise. |
Compared with PCF8576DT/2 and PCF8576DU/DA, the PCF8576DH/2 offers optimal thermal performance and standard surface-mount compatibility in automotive and industrial designs requiring robust long-term reliability and ease of assembly.
Availability
PCF8576DH/2 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial HMIs, and consumer appliance displays requiring stable component supply and AEC-Q100 compliance.
Supply support for PCF8576DH/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 leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The PCF8576D product line was engineered specifically for cost-sensitive, low-power LCD interfacing in automotive and industrial instrumentation - delivering integrated bias generation, I²C simplicity, and AEC-Q100 qualification in a single chip.
FAQ
What is the maximum LCD size supported by the PCF8576DH/2?
The PCF8576DH/2 supports up to 4 backplanes and 40 segments, enabling displays with up to 160 elements - such as twenty 7-segment numeric characters or ten 14-segment alphanumeric characters. Cascading multiple PCF8576DH/2 devices extends this to 2560 elements, making it suitable for large-format segmented LCDs in automotive and industrial applications.
Does the PCF8576DH/2 require external components for LCD biasing?
No, the PCF8576DH/2 includes an internal LCD bias generator with voltage-follower buffers that produce precise 1/2 or 1/3 bias voltages without external resistors. Only VLCD (2.5–6.5 V) and VDD (1.8–5.5 V) supplies are needed - significantly reducing BOM count and PCB area compared to discrete bias solutions.
How does the PCF8576DH/2 handle cascaded LCD systems?
The PCF8576DH/2 uses the SYNC pin for frame-synchronized cascading and hardware subaddressing (A0–A2, SA0) to uniquely identify up to eight devices on one I²C bus. Display data automatically wraps to the next device when RAM boundaries are exceeded - enabling seamless expansion to 2560 total elements without host software intervention.
What are the valid LCD drive modes supported by the PCF8576DH/2?
The PCF8576DH/2 supports static (1-backplane), 1:2, 1:3, and 1:4 multiplex drive modes, each with corresponding bias configurations: static (no bias division), 1:2 (1/2 or 1/3 bias), and 1:3/1:4 (1/3 bias only). Mode selection is controlled via the mode-set command and determines RAM addressing, output bank sequencing, and waveform generation.
Is the PCF8576DH/2 compatible with both internal and external clock sources?
Yes - the PCF8576DH/2 can operate with either its internal oscillator (enabled by connecting OSC to VSS, yielding 1536 Hz) or an external clock applied to the CLK pin (OSC tied to VDD). The frame frequency is always fclk/24, ensuring deterministic timing regardless of source; removing the clock freezes the LCD in DC state.
PCF8576DH/2,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 64-TQFP
- 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:
- 64-TQFP (10x10)
PCF8576DH/2,518 FAQ
1.How can I place an order for PCF8576DH/2,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCF8576DH/2,518 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 PCF8576DH/2,518 reliable?
The price and inventory of PCF8576DH/2,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCF8576DH/2,518 is usually 5 days.
3.What payment methods are accepted for PCF8576DH/2,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCF8576DH/2,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCF8576DH/2,518?
PCF8576DH/2,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCF8576DH/2,518 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 PCF8576DH/2,518?
For technical support, including PCF8576DH/2,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCF8576DH/2,518 requirements.
6.How does Aetrix verify that PCF8576DH/2,518 is sourced from the original manufacturer or authorized distributors?
All PCF8576DH/2,518 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 PCF8576DH/2,518 meets industry standards.
7.What is the process for return or replacement of PCF8576DH/2,518?
All PCF8576DH/2,518 units undergo pre-shipment inspection (PSI). If there is an issue with PCF8576DH/2,518, 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 PCF8576DH/2,518 part is unused and in its original packaging.
Return procedure for PCF8576DH/2,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCF8576DH/2,518 Tags
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