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NXP Semiconductors PCF8534AU/DA/1,026
- Part No.:
- PCF8534AU/DA/1,026
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- Die
- Datasheet:
-
PCF8534AU/DA/1,026.pdf
- Description:
- IC DRVR 60 SEGMENT DIE
- Quantity:
- Payment:
- Shipping:
Inventory:4,675
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Product details
Overview
PCF8534AU/DA/1 from NXP Semiconductors is a single-chip LCD controller and driver IC designed for static or low-multiplex-rate LCDs with up to 4 backplanes and 60 segments. It supports I²C-bus communication at 400 kHz, provides internal LCD bias generation (1/2 or 1/3 bias), and operates from 1.8 V to 5.5 V logic supply with independent 2.5–6.5 V LCD supply - enabling direct drive of automotive instrument cluster displays and industrial panel meters.
For engineers reviewing the PCF8534AU/DA/1 datasheet, PCF8534AU/DA/1 pinout, PCF8534AU/DA/1 application, or PCF8534AU/DA/1 equivalent, key selection criteria include its 60 × 4-bit display RAM, cascading capability for larger LCDs, selectable multiplex drive modes (static, 1:2, 1:3, 1:4), and wire bond die form factor optimized for custom module integration.
Technical Context
The PCF8534AU/DA/1 implements a dedicated LCD timing engine with internal oscillator (enabled via OSC pin tied to VSS) or external clock input (OSC tied to VDD), generating frame frequencies derived from fclk/24 (e.g., 64 Hz at 1536 Hz clock). Its display RAM uses auto-incremented addressing synchronized to drive mode: pointer increments by 8 in static mode, 4 in 1:2, 3 in 1:3, and 2 in 1:4 multiplexing.
Hardware subaddressing (A0–A2 pins) and slave address selection (SA0) enable multi-device I²C-bus configuration; SYNC pin supports daisy-chained synchronization across cascaded units. Backplane outputs BP0–BP3 are dynamically configured per drive mode - paralleled in static mode, paired in 1:2/1:3, or fully utilized in 1:4 - while segment outputs S0–S59 drive LCD elements directly without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Display capacity | Up to 240 LCD elements (4 backplanes × 60 segments); supports 30×7-seg or 15×14-seg alphanumeric displays. |
| I²C interface speed | 400 kHz maximum - enables fast display updates with minimal MCU overhead and no external pull-up tuning required. |
| Logic supply range | 1.8 V to 5.5 V - compatible with modern low-voltage microcontrollers and legacy 5 V systems without level shifting. |
| LCD supply range | 2.5 V to 6.5 V - accommodates low-threshold polymer LCDs and high-threshold twisted nematic modules. |
| Bias configurations | Static, 1/2, or 1/3 bias - selectable per drive mode to optimize contrast and voltage headroom for specific LCD glass. |
| Display RAM | 60 × 4-bit static RAM - stores on/off states per segment/backplane combination; mapped 1:1 to physical outputs. |
| Drive modes | Static, 1:2, 1:3, or 1:4 multiplex - determined by connected backplanes and configured via command decoder. |
Pinout & Package
PCF8534AU/DA/1 is supplied as a wire bond die in chip-in-tray format (76 bonding pads, 2.91 × 2.62 × 0.38 mm), requiring custom substrate mounting. The die substrate is electrically connected to VSS and must be isolated from other potentials.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| S0–S59 | LCD segment output | 60 dedicated CMOS outputs driving LCD segments directly; unused pins left open-circuit. |
| BP0–BP3 | LCD backplane output | Four outputs supporting static or multiplexed bias waveforms; configurable for parallel/paired operation per drive mode. |
| SDA / SCL | I²C-bus interface | Open-drain bidirectional data and clock lines compliant with standard I²C protocol; no external pull-ups needed. |
| OSC / CLK / SYNC | Clock & cascade control | OSC enables internal oscillator; CLK routes clock signal (input/output); SYNC synchronizes frame timing across cascaded dies. |
| A0–A2 / SA0 | Subaddress & slave select | Hardware-selectable 3-bit subaddress (A0–A2) and slave address bit (SA0) allow up to 16 devices on one I²C bus. |
| VDD / VSS / VLCD | Power supplies | Separate logic (VDD/VSS) and LCD (VLCD/VSS) rails enable independent voltage optimization and noise isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCD bias generator | Eliminates external resistor networks or charge pumps; supports temperature-compensated VLCD input for stable contrast over operating range. |
| Auto-incremented RAM addressing | Reduces I²C transaction count during full-display refresh - pointer advances by mode-specific step (2–8) after each byte write. |
| Cascading support with SYNC | Enables seamless expansion beyond 60 segments using multiple PCF8534AU/DA/1 dies; eliminates software timing coordination. |
| Versatile blinking control | Hardware-managed blink modes reduce MCU intervention; blink rate and segment groups configurable via register writes. |
| No external components required | Full LCD drive functionality achieved with only VDD, VSS, VLCD, and LCD panel connections - simplifies BOM and layout. |
Applications
| Automotive Instrument Clusters | Industrial Panel Meters |
|---|---|
|
Use Scenario: Driving segmented LCDs in vehicle speedometers, fuel gauges, and warning indicators under wide temperature and EMI conditions. IC Role / Device Role / Timing Role: Primary LCD controller/driver handling multiplexed 4-backplane displays with AEC-Q100-compliant timing stability. Use Value: Internal bias generation and 1.8–5.5 V logic supply ensure reliable operation across battery voltage fluctuations (9–16 V) without external regulators. |
Use Scenario: Controlling numeric and status displays in programmable logic controllers (PLCs), power analyzers, and HVAC controllers. IC Role / Device Role / Timing Role: Standalone display interface translating I²C commands into precise LCD segment/backplane waveforms with fixed fclk/24 frame timing. Use Value: 60-segment capacity and cascading support enable flexible display sizing (e.g., 4×15-digit readouts) without FPGA or custom ASIC involvement. |
| Medical Device Displays | Consumer Appliance UIs |
|
Use Scenario: Powering low-power, high-reliability segmented displays in portable blood glucose meters and infusion pump interfaces. IC Role / Device Role / Timing Role: Low-power LCD driver with static and 1:2 multiplex modes minimizing active current draw while maintaining readability. Use Value: 2.5–6.5 V VLCD range allows direct use of lithium coin-cell voltages (3 V) or boosted supplies for high-contrast glass, extending battery life. |
Use Scenario: Managing alphanumeric and icon-based displays in microwave ovens, washing machines, and coffee makers. IC Role / Device Role / Timing Role: Cost-optimized display controller interfacing 8-bit microcontrollers via I²C to drive 14-segment character displays. Use Value: Hardware subaddressing (A0–A2) permits shared I²C bus with touch controllers and sensor ICs, reducing MCU GPIO count and firmware complexity. |
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 |
|---|---|---|---|
| PCF85134HL/1 | Successor part with enhanced ESD rating (±8 kV HBM), updated I²C timing, and extended -40°C to +105°C automotive grade operation. | Designed for new automotive designs requiring AEC-Q100 Grade 2 compliance; not pin-compatible with PCF8534AU/DA/1 die form factor. | Select PCF85134HL/1 for new designs targeting long-term availability and higher robustness; PCF8534AU/DA/1 remains valid for legacy module rework. |
| HD44780U | Parallel-interface character LCD controller (8-bit/4-bit bus); no integrated bias generation; requires external resistors for contrast control. | Targeted at simple 2×16 or 4×20 alphanumeric modules; lacks multiplex flexibility, I²C interface, and 60-segment scalability. | Choose HD44780U only for cost-sensitive, low-complexity displays where MCU GPIOs are abundant and LCD size is fixed at ≤ 80 characters. |
Compared with PCF85134HL/1, the PCF8534AU/DA/1 offers proven reliability in existing modules but lacks updated automotive qualification; versus HD44780U, it delivers superior integration, I²C efficiency, and scalable segment count - making it optimal for custom embedded LCD subsystems requiring design longevity and layout simplicity.
Availability
PCF8534AU/DA/1 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial panel meters, medical device displays, and consumer appliance UIs requiring stable component supply and long-lifecycle support.
Supply support for PCF8534AU/DA/1 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 deep expertise in mixed-signal and display interface ICs.
The PCF8534A product line was engineered to simplify LCD integration in resource-constrained embedded systems, delivering single-chip controller/driver functionality with minimal external components and flexible I²C-based configuration.
FAQ
What is the package type and mounting method for PCF8534AU/DA/1?
PCF8534AU/DA/1 is supplied as a wire bond die (76 bonding pads, 2.91 × 2.62 × 0.38 mm) in chip-in-tray format. It requires custom flip-chip or wire bonding onto a substrate; the die substrate is internally connected to VSS and must be electrically isolated from other potentials during mounting.
Does PCF8534AU/DA/1 support I²C clock stretching or multi-master arbitration?
No - PCF8534AU/DA/1 operates strictly as an I²C slave device with no clock stretching or arbitration capability. It accepts standard 400 kHz I²C transactions and relies on the host controller to manage bus timing and collision avoidance.
How does the PCF8534AU/DA/1 handle display RAM addressing in 1:3 multiplex mode?
In 1:3 multiplex mode, the PCF8534AU/DA/1 increments the data pointer by 3 after each byte write, distributing bits across BP0–BP2 rows. Bit 3 of the third RAM address remains unchanged unless explicitly rewritten, requiring careful byte alignment to avoid unintended segment activation in the PCF8534AU/DA/1 display RAM.
Can unused backplane outputs (e.g., BP2, BP3) be left floating in static drive mode?
Yes - in static drive mode, all four backplane outputs (BP0–BP3) carry identical signals. Unused outputs may be left unconnected, though paralleling them increases drive strength. The PCF8534AU/DA/1 datasheet confirms open-circuit tolerance for unused BP pins.
Is PCF8534AU/DA/1 qualified for automotive use per AEC-Q100?
The PCF8534AH/1 variant is AEC-Q100 qualified, but PCF8534AU/DA/1 - as a wire bond die - is not individually certified. System-level qualification is achievable when integrated into AEC-Q200-compliant modules; however, PCF8534AU/DA/1 itself carries no AEC-Q100 grade designation.
PCF8534AU/DA/1,026 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Display Type:
- LCD
- Configuration:
- 60 Segment
- Interface:
- I2C
- Digits or Characters:
- -
- 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
PCF8534AU/DA/1,026 FAQ
1.How can I place an order for PCF8534AU/DA/1,026 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCF8534AU/DA/1,026 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 PCF8534AU/DA/1,026 reliable?
The price and inventory of PCF8534AU/DA/1,026 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCF8534AU/DA/1,026 is usually 5 days.
3.What payment methods are accepted for PCF8534AU/DA/1,026?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCF8534AU/DA/1,026 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCF8534AU/DA/1,026?
PCF8534AU/DA/1,026 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCF8534AU/DA/1,026 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 PCF8534AU/DA/1,026?
For technical support, including PCF8534AU/DA/1,026 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCF8534AU/DA/1,026 requirements.
6.How does Aetrix verify that PCF8534AU/DA/1,026 is sourced from the original manufacturer or authorized distributors?
All PCF8534AU/DA/1,026 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 PCF8534AU/DA/1,026 meets industry standards.
7.What is the process for return or replacement of PCF8534AU/DA/1,026?
All PCF8534AU/DA/1,026 units undergo pre-shipment inspection (PSI). If there is an issue with PCF8534AU/DA/1,026, 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 PCF8534AU/DA/1,026 part is unused and in its original packaging.
Return procedure for PCF8534AU/DA/1,026:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCF8534AU/DA/1,026 Tags
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PCA8561AHN/AY
NXP Semiconductors
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SN74LS47N
Texas Instruments
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PCF85176T/1Y
NXP Semiconductors
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PCF85176H/1,518
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BU9796AMUV-E2
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PCA85176H/Q900/1,5
NXP Semiconductors
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PCF8537AH/1,518
NXP Semiconductors
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LM3914VX/NOPB
Texas Instruments
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PCF85134HL/1,118
NXP Semiconductors
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AS1115-BSST
ams-OSRAM USA INC.
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PCA8534AH/Q900/1,5
NXP Semiconductors
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LM3914V/NOPB
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