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NXP Semiconductors PCF8534AH/1,518
- Part No.:
- PCF8534AH/1,518
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- 80-LQFP
- Datasheet:
-
PCF8534AH/1,518.pdf
- Description:
- IC DRVR 60 SEGMENT 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,296
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Product details
Overview
PCF8534AH/1 from NXP Semiconductors is an AEC-Q100 qualified LCD controller and driver IC for automotive-grade static or low-multiplex LCDs. It supports up to 4 backplanes and 60 segments, delivers internal LCD bias generation with selectable 1/2 or 1/3 bias, operates from 1.8 V to 5.5 V logic supply, and interfaces via a 400 kHz I²C-bus - enabling direct drive of 30-digit 7-segment displays in instrument clusters.
For engineers reviewing the PCF8534AH/1 datasheet, PCF8534AH/1 pinout, PCF8534AH/1 application, or PCF8534AH/1 equivalent, this page provides verified technical context, validated pin functions, confirmed automotive qualification status, real display RAM mapping behavior, and two documented alternative parts for legacy design continuity.
Technical Context
The PCF8534AH/1 implements a dedicated LCD drive architecture with hardware subaddressing (A0–A2), auto-incremented 60 × 4-bit display RAM addressing, and synchronized cascade operation via SYNC pin. Its internal oscillator (enabled by OSC-to-VSS) or external clock input (OSC-to-VDD) sets the frame rate - derived as ffr = fclk/24 - supporting stable multiplexed waveforms across static, 1:2, 1:3, and 1:4 drive modes.
Display memory bank switching enables static/duplex mode operation without host intervention, while voltage-follower-based LCD bias generation eliminates external components. The device uses silicon gate CMOS process and supports separated VLCD (2.5–6.5 V) and logic (1.8–5.5 V) supplies - critical for mixed-voltage automotive panel designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Segments | 60 segment outputs (S0–S59) - drives up to 30×7-segment digits or 15×14-segment alphanumeric characters |
| Backplane Config | Static or 2/3/4 backplane multiplexing - selects waveform timing and bias ratio (1/2 or 1/3) |
| I²C Interface | 400 kHz standard-mode bus - minimizes MCU firmware overhead with auto-incremented RAM addressing |
| LCD Supply Range | VLCD = 2.5 V to 6.5 V - supports both low-threshold and high-threshold twisted nematic LCDs |
| Logic Supply | VDD = 1.8 V to 5.5 V - enables direct interface with 1.8 V, 3.3 V, or 5 V microcontrollers |
| Display RAM | 60 × 4-bit static RAM - stores on/off state per segment/backplane combination; one-to-one bit-to-element mapping |
| AEC-Q100 | Qualified per AEC-Q100 Rev G Grade 2 (−40 °C to +105 °C) - validated for automotive instrument cluster use |
Pinout & Package
PCF8534AH/1 is packaged in LQFP80 (SOT315-1), 12 mm × 12 mm × 1.4 mm body, with 80 leads. Pin functions are validated per NXP datasheet Rev. 6 (2011).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| S0–S59 | LCD segment output | 60 dedicated outputs driving LCD segment electrodes; unused pins must be left open-circuit |
| BP0–BP3 | LCD backplane output | Four outputs supporting static, 1:2, 1:3, or 1:4 multiplexing; BP0–BP3 may be paralleled in static mode |
| SDA / SCL | I²C-bus interface | Open-drain bidirectional data (SDA) and clock (SCL) lines - require external pull-ups per I²C spec |
| OSC / CLK / SYNC | Clock & cascade control | OSC enables internal oscillator; CLK outputs internal clock or accepts external clock; SYNC synchronizes cascaded devices |
| A0–A2 / SA0 | Subaddressing | Hardware-selectable slave address bits (A0–A2) and SA0 allow up to 16 unique I²C addresses in multi-device systems |
| VDD / VSS / VLCD | Power supplies | VDD powers logic core (1.8–5.5 V); VSS is ground reference; VLCD powers LCD section (2.5–6.5 V) - supplies may be separated |
Key Features
| Feature | Design Value |
|---|---|
| Internal LCD bias generator | Eliminates external resistive divider or charge pump - reduces BOM count and layout area |
| Display RAM bank switching | Enables seamless transition between static and duplex drive modes without host reconfiguration |
| Cascading support | SYNC pin allows synchronous frame timing across multiple PCF8534AH/1 devices for >60-segment displays |
| Versatile blinking modes | Hardware-controlled blink timing independent of host MCU - reduces firmware load in automotive UIs |
| No external components required | Full LCD drive solution with integrated oscillator, bias, and timing - simplifies PCB routing and validation |
Applications
| Automotive Instrument Clusters | Industrial Control Panels |
|---|---|
Use Scenario: Driving segmented LCDs in vehicle speedometers, fuel gauges, and warning indicators under extended temperature ranges. IC Role / Device Role / Timing Role: Primary LCD controller and driver - generates multiplexed backplane/segment waveforms, manages display RAM, and handles I²C command decoding. Use Value: AEC-Q100 qualification ensures reliability at −40 °C to +105 °C; internal bias generation avoids thermal drift issues common with discrete resistor networks. | Use Scenario: Controlling alphanumeric LCDs in programmable logic controller (PLC) HMI modules with limited MCU resources. IC Role / Device Role / Timing Role: Offloads LCD timing and memory management from host MCU via auto-incremented I²C writes and hardware subaddressing. Use Value: 400 kHz I²C interface and display RAM bank switching reduce host polling frequency - freeing CPU cycles for real-time control tasks. |
| Medical Device Displays | Consumer Appliance Interfaces |
Use Scenario: Powering low-power segmented displays in portable blood pressure monitors and glucose meters with battery operation. IC Role / Device Role / Timing Role: LCD driver with ultra-low quiescent current and dual-supply separation - isolates sensitive analog sections from digital noise. Use Value: 1.8 V logic supply compatibility enables direct interface with ultra-low-power MCUs; VLCD/VDD separation improves EMI immunity. | Use Scenario: Driving 7-segment numeric displays in microwave ovens, washing machines, and HVAC thermostats. IC Role / Device Role / Timing Role: Standalone LCD controller eliminating need for custom display firmware - handles blinking, multiplexing, and bias automatically. Use Value: Hardware blink control and static/duplex mode switching enable consistent UI behavior without MCU intervention during sleep/wake transitions. |
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 identical pinout, enhanced ESD rating (±4 kV HBM), and updated AEC-Q100 qualification (Grade 1, −40 °C to +125 °C) | Direct replacement for new designs requiring extended temperature range or higher robustness; not recommended for legacy PCF8534AH/1-only layouts | Select when designing new automotive systems requiring Grade 1 qualification or improved latch-up immunity. |
| PCF8576C/1 | Same 60-segment, 4-backplane capability but lacks AEC-Q100 qualification; supports only 1:2/1:3/1:4 multiplex (no static mode); 2.7–5.5 V VDD range | Cost-optimized alternative for industrial or consumer applications where automotive qualification is unnecessary | Choose for non-automotive applications where static drive mode is not required and extended temperature range is not needed. |
Compared with PCF8534AH/1, PCF85134HL/1 offers higher temperature grade and ESD robustness for next-gen automotive designs, while PCF8576C/1 provides a lower-cost, non-automotive option with reduced feature set - neither is pin-compatible with PCF8534AH/1 without layout verification.
Availability
PCF8534AH/1 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial HMIs, medical device displays, and consumer appliance interfaces requiring stable component supply across extended lifecycle windows.
Supply support for PCF8534AH/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 company specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The PCF8534AH/1 belongs to NXP's universal LCD driver product line, designed specifically for reliable, low-component-count interfacing of microcontrollers to segmented LCDs in harsh-environment applications.
FAQ
What is the AEC-Q100 qualification status of PCF8534AH/1?
PCF8534AH/1 is qualified per AEC-Q100 Rev G Grade 2, covering operation from −40 °C to +105 °C ambient temperature. This certification confirms its suitability for automotive instrument cluster and center-stack display applications. The qualification includes stress testing for temperature cycling, humidity, and electrical robustness - all verified in NXP's official product documentation for PCF8534AH/1.
Does PCF8534AH/1 support static LCD drive mode?
Yes, PCF8534AH/1 supports static drive mode using a single backplane (BP0 only), delivering full VLCD RMS voltage to active segments. In this mode, all four backplane outputs (BP0–BP3) carry identical signals and may be paralleled to increase drive strength. Static mode is enabled via command register configuration and requires no external bias components - a capability confirmed in Section 7.4.1 of the PCF8534AH/1 datasheet.
What is the maximum LCD supply voltage (VLCD) supported by PCF8534AH/1?
PCF8534AH/1 supports VLCD from 2.5 V to 6.5 V, accommodating both low-threshold polymer-dispersed LCDs and high-threshold twisted nematic panels. This wide range enables direct drive of diverse display types without external level-shifting circuitry. The internal voltage selector and bias generator automatically adapt to the selected VLCD value - a specification explicitly stated in the "Features and benefits" section of the PCF8534AH/1 product data sheet.
Can multiple PCF8534AH/1 devices be cascaded, and how is synchronization handled?
Yes, PCF8534AH/1 supports hardware-synchronized cascading via the dedicated SYNC pin (pin 42). When cascaded, the first device's CLK output drives the next device's CLK input, while SYNC propagates frame timing across the chain. This ensures simultaneous LCD updates and eliminates visual tearing - a function validated in Figure 5 and Section 7.6 of the PCF8534AH/1 datasheet. Each device requires unique I²C addressing via A0–A2 and SA0 pins.
Is PCF8534AH/1 still recommended for new designs?
No - NXP explicitly states that PCF8534AH/1 should not be used for new design-ins. The designated replacement is PCF85134HL/1, which maintains pin and functional compatibility while offering enhanced AEC-Q100 Grade 1 qualification (−40 °C to +125 °C) and improved ESD performance. This guidance is documented in Section 1 ("General description") and Section 3 ("Ordering information") of the official PCF8534AH/1 datasheet.
PCF8534AH/1,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 80-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 80-LQFP (12x12)
PCF8534AH/1,518 FAQ
1.How can I place an order for PCF8534AH/1,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCF8534AH/1,518 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 PCF8534AH/1,518 reliable?
The price and inventory of PCF8534AH/1,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCF8534AH/1,518 is usually 5 days.
3.What payment methods are accepted for PCF8534AH/1,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCF8534AH/1,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCF8534AH/1,518?
PCF8534AH/1,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCF8534AH/1,518 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 PCF8534AH/1,518?
For technical support, including PCF8534AH/1,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCF8534AH/1,518 requirements.
6.How does Aetrix verify that PCF8534AH/1,518 is sourced from the original manufacturer or authorized distributors?
All PCF8534AH/1,518 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 PCF8534AH/1,518 meets industry standards.
7.What is the process for return or replacement of PCF8534AH/1,518?
All PCF8534AH/1,518 units undergo pre-shipment inspection (PSI). If there is an issue with PCF8534AH/1,518, 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 PCF8534AH/1,518 part is unused and in its original packaging.
Return procedure for PCF8534AH/1,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCF8534AH/1,518 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
Rohm Semiconductor
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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
Texas Instruments
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