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NXP Semiconductors PCA8539DUG/DAZ
- Part No.:
- PCA8539DUG/DAZ
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- Die
- Datasheet:
-
PCA8539DUG/DAZ.pdf
- Description:
- IC DRVR 7 SEGMENT DIE
- Quantity:
- Payment:
- Shipping:
Inventory:3,104
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Product details
Overview
PCA8539DUG/DAZ from NXP Semiconductors is a single-chip automotive-grade LCD controller and driver for high-contrast Vertical Alignment (VA) displays, supporting up to 1:18 multiplexing, 100 segments × 18 backplanes (1800 elements), and programmable frame frequency from 45 Hz to 360 Hz. It integrates an on-chip charge pump (2×–4× multiplier), temperature sensor, and linear temperature compensation for VLCD, enabling stable contrast across −40 °C to +105 °C in instrument clusters and climate control displays.
For engineers reviewing the PCA8539DUG/DAZ datasheet, PCA8539DUG/DAZ pinout, PCA8539DUG/DAZ application, or PCA8539DUG/DAZ equivalent, key selection criteria include AEC-Q200 Grade 2 compliance, dual I²C/SPI interface support, 2960-bit on-chip RAM (1800-bit display RAM), low-power operation (<2 µA in power-down), and configurable inversion modes (frame or 1–7-line).
Technical Context
The PCA8539DUG/DAZ implements a fully integrated LCD drive architecture with independent analog supply (VDD2: 2.5–5.5 V) and programmable VLCD output (4–16 V), decoupled from VDD1 via internal charge pump. Its timing engine supports selectable frame frequencies and multiple inversion schemes to suppress DC bias and minimize flicker in VA panels.
It features dual bus interfaces - two-wire I²C (with slave address SA0) and four-wire SPI (CE/SDI/SDO/SCL) - and includes diagnostic capabilities such as CRC-8/XOR checksums on bus transactions, status register readout, and reset flag monitoring. The device uses a dedicated temperature-sensing circuit to adjust VLCD in real time using four user-programmable compensation slopes (TSA–TSD).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Multiplex Rate | 1:18 or 1:12 - supports high-resolution dot-matrix VA LCDs with up to 1800 active elements |
| Segment/Backplane Count | 100 segments × 18 backplanes - enables full graphic display capability for automotive instrument clusters |
| Frame Frequency Range | 45 Hz to 360 Hz - programmable to balance flicker suppression, power consumption, and display responsiveness |
| Supply Voltage Range | VDD1/VDD2: 2.5 V to 5.5 V - allows direct battery operation (e.g., 3.3 V or 5 V systems) without external regulators |
| VLCD Output Range | 4 V to 16 V - generated internally via 2×/3×/4× charge pump or supplied externally; independent of VDD |
| Operating Temperature | −40 °C to +105 °C - AEC-Q200 Grade 2 qualified for under-hood and dashboard automotive environments |
| RAM Capacity | 2960-bit total (1800-bit display RAM + 1160-bit general-purpose RAM) - stores full frame data and system variables |
| Power Consumption | <2 µA in power-down mode - enables ultra-low standby current for always-on automotive displays |
Pinout & Package
Bare die package with 244 gold bumps (PCA8539DUG), intended for Chip-on-Glass (COG) integration in automotive LCD modules. Not supplied in leaded or surface-mount packages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM0–COM17 | Backplane outputs | 18 dedicated outputs driving common electrodes; pins assigned across bump locations 1–9, 110–131, 232–244 |
| S0–S99 | Segment outputs | 100 outputs driving segment electrodes; mapped to bumps 132–231 |
| VLCDOUT (17–20) | LCD supply output | Regulated high-voltage output for LCD bias; requires external capacitor filtering per datasheet layout guidelines |
| VLCDSENSE (14–16) | Feedback input | Monitors VLCD regulation accuracy; enables closed-loop stability for temperature-compensated operation |
| I²C: SDAOUT (105–109), SCL (102–104) | I²C interface | Open-drain outputs/inputs; SA0 (57–58) sets slave address; requires external pull-ups |
| SPI: CE (90–91), SDI (97–99), SDO (100–101), SCL (102–104) | SPI interface | Four-wire bidirectional bus; CE active-low enables communication; SDO must be left open when unused |
| PD (74–75) | Power-down control | Active-high input; asserts <2 µA standby mode; critical for energy-efficient automotive display sleep states |
| RST (95–96) | Reset input | Active-low asynchronous reset; clears all registers and initializes internal state machines on power-up or fault recovery |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q200 Grade 2 qualification | Validated for automotive under-hood and cabin applications with guaranteed operation from −40 °C to +105 °C |
| Integrated temperature sensor & compensation | On-die thermal sensing with four programmable linear compensation slopes (TSA–TSD) to stabilize VLCD over temperature |
| Dual interface support (I²C/SPI) | Configurable via IFS pin; eliminates need for interface-specific PCB variants in multi-platform automotive designs |
| Programmable inversion modes | Selectable frame or 1–7-line inversion to optimize flicker vs. power trade-off for specific LCD glass characteristics |
| On-chip 2960-bit RAM | 1800-bit display RAM + 1160-bit GP RAM enables full-frame buffering and firmware variable storage without external memory |
| Checksum-enabled bus diagnostics | CRC-8 or XOR checksum on I²C/SPI writes detects transmission errors in noisy automotive ECU environments |
Applications
| Instrument Clusters | Climate Control Displays |
|---|---|
Use Scenario: Digital speedometer, tachometer, fuel level, and warning indicators in modern vehicle dashboards. IC Role / Device Role / Timing Role: Primary LCD controller/driver managing 100×18 VA matrix with real-time temperature-compensated contrast and frame-synchronized updates. Use Value: Ensures legibility across extreme ambient temperatures and vibration; AEC-Q200 compliance guarantees reliability in safety-critical instrumentation. |
Use Scenario: Multi-zone HVAC interface with icons, temperature digits, and airflow direction indicators. IC Role / Device Role / Timing Role: Graphics-capable driver handling segmented and icon-based content using 1800-element addressing and programmable inversion. Use Value: Low-power operation extends battery backup runtime; integrated charge pump eliminates need for external high-voltage supplies. |
| Car Radio UI Panels | Medical Display Modules |
Use Scenario: Touchless audio system display with station name, track info, and equalizer bars. IC Role / Device Role / Timing Role: SPI/I²C-configurable driver delivering consistent contrast and flicker-free animation at 80–120 Hz frame rates. Use Value: Dual-bus flexibility simplifies integration with existing MCU peripherals; 2960-bit RAM stores dynamic UI assets locally. |
Use Scenario: Portable diagnostic equipment with monochrome graphical LCD requiring stable readability in clinical settings. IC Role / Device Role / Timing Role: High-reliability LCD driver operating across wide temperature ranges with verified long-term stability per ISO 13485-aligned manufacturing. Use Value: Extended −40 °C to +105 °C range supports sterilization cycles and field-deployed battery-powered devices. |
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 |
|---|---|---|---|
| PCF8536T | 144-segment × 8-backplane (1:8), no integrated temperature sensor or VLCD compensation | Limited to simpler segment-only displays; lacks AEC-Q200 qualification and VA-panel optimization | Choose for cost-sensitive non-automotive applications with lower resolution requirements and fixed-temperature operation. |
| RA8835 | Parallel 8-bit interface only; no I²C/SPI; requires external VLCD generation and temperature sensor | Designed for industrial monochrome graphic LCDs; higher pin count and board space; no automotive qualification | Prefer when legacy parallel MCU interfaces exist and external component integration is acceptable for non-automotive use cases. |
Compared with PCF8536T and RA8835, the PCA8539DUG/DAZ uniquely combines AEC-Q200 Grade 2 compliance, on-die temperature compensation, dual serial interfaces, and 1:18 multiplexing in a COG-optimized bare die - making it the only qualified solution for high-fidelity automotive VA LCDs requiring zero external high-voltage components.
Availability
PCA8539DUG/DAZ is available at Aetrix Electronics and suitable for automotive instrument clusters, climate control displays, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PCA8539DUG/DAZ 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 technologies.
The PCA8539 belongs to NXP's automotive LCD driver product line, engineered specifically for Chip-on-Glass integration in high-reliability, high-contrast VA displays used in digital instrument clusters and infotainment subsystems.
FAQ
What is the primary function of the PCA8539DUG/DAZ in an automotive display system?
The PCA8539DUG/DAZ serves as a fully integrated LCD controller and driver for high-contrast Vertical Alignment (VA) displays in automotive applications. It generates precise multiplexed drive waveforms for up to 100 segments × 18 backplanes, manages on-chip VLCD generation with temperature compensation, and interfaces via I²C or SPI to host microcontrollers - all while meeting AEC-Q200 Grade 2 requirements for operation from −40 °C to +105 °C. This makes PCA8539DUG/DAZ ideal for instrument clusters and climate control panels where reliability and contrast stability are critical.
Does the PCA8539DUG/DAZ require external components to generate the LCD supply voltage (VLCD)?
No, the PCA8539DUG/DAZ includes an integrated charge pump capable of generating VLCD at 2×, 3×, or 4× VDD2 (2.5–5.5 V), yielding a programmable output from 4 V to 16 V without external voltage multipliers. External capacitors are required per the datasheet layout guidelines for charge pump stability, but no external DC-DC converter or high-voltage IC is needed. The PCA8539DUG/DAZ also supports optional external VLCD supply via VLCDIN pins if system-level design prefers centralized power management.
How does the PCA8539DUG/DAZ handle temperature variation to maintain display contrast?
The PCA8539DUG/DAZ incorporates an on-die temperature sensor and supports linear temperature compensation of VLCD using four user-programmable slopes (TSA–TSD). When enabled via the Temperature_ctrl command, the device reads temperature data (TD[7:0]) and adjusts VLCD in real time to counteract LCD threshold voltage drift across −40 °C to +105 °C. This ensures consistent contrast without manual calibration or external thermistors - a key requirement for automotive-grade VA displays where ambient temperature swings directly impact readability.
Can the PCA8539DUG/DAZ drive both segment-only and dot-matrix LCDs?
Yes, the PCA8539DUG/DAZ supports both configurations through its 100-segment × 18-backplane architecture and flexible inversion modes. It can drive traditional 7-segment or 14-segment alphanumeric displays by mapping segments to appropriate S0–S99 outputs and configuring COM lines accordingly. For dot-matrix graphics, it uses the full 1800-element addressing space with programmable frame frequency and inversion (frame or 1–7-line) to optimize image quality. The 2960-bit on-chip RAM stores either static segment data or full-frame bitmap content, making PCA8539DUG/DAZ adaptable to diverse LCD topologies.
What are the power management capabilities of the PCA8539DUG/DAZ?
The PCA8539DUG/DAZ provides granular power control including a dedicated active-high PD pin that reduces current consumption to <2 µA in power-down mode - essential for automotive displays that must retain partial functionality during ignition-off states. It also supports dynamic clock gating: the internal oscillator and charge pump operate only when display, VLCD generation, or temperature measurement is enabled, minimizing idle current. With VDD1/VDD2 operating from 2.5 V to 5.5 V, PCA8539DUG/DAZ is compatible with single-cell Li-ion, 3.3 V, or 5 V rail architectures without external regulators.
PCA8539DUG/DAZ 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, SPI
- Digits or Characters:
- 1800 Elements
- Current - Supply:
- 40 µA
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
PCA8539DUG/DAZ FAQ
1.How can I place an order for PCA8539DUG/DAZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA8539DUG/DAZ 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 PCA8539DUG/DAZ reliable?
The price and inventory of PCA8539DUG/DAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA8539DUG/DAZ is usually 5 days.
3.What payment methods are accepted for PCA8539DUG/DAZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA8539DUG/DAZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA8539DUG/DAZ?
PCA8539DUG/DAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA8539DUG/DAZ 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 PCA8539DUG/DAZ?
For technical support, including PCA8539DUG/DAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA8539DUG/DAZ requirements.
6.How does Aetrix verify that PCA8539DUG/DAZ is sourced from the original manufacturer or authorized distributors?
All PCA8539DUG/DAZ 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 PCA8539DUG/DAZ meets industry standards.
7.What is the process for return or replacement of PCA8539DUG/DAZ?
All PCA8539DUG/DAZ units undergo pre-shipment inspection (PSI). If there is an issue with PCA8539DUG/DAZ, 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 PCA8539DUG/DAZ part is unused and in its original packaging.
Return procedure for PCA8539DUG/DAZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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