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NXP Semiconductors PCA85133U/2DB/Q1,0
- Part No.:
- PCA85133U/2DB/Q1,0
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- -
- Datasheet:
-
PCA85133U/2DB/Q1,0.pdf
- Description:
- IC LCD DRIVER UNIV UNCASED
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Product details
Overview
PCA85133U/2DB/Q1 from NXP Semiconductors is an AEC-Q100 qualified automotive LCD controller and driver IC that interfaces microcontrollers to static or multiplexed LCDs with up to 4 backplanes and 80 segments. It supports 1:2/1:3/1:4 multiplexing, 1⁄2 or 1⁄3 bias, and dual frame frequencies (82 Hz / 110 Hz), enabling use in instrument clusters and center-stack displays.
For engineers reviewing the PCA85133U/2DB/Q1 datasheet, PCA85133U/2DB/Q1 pinout, PCA85133U/2DB/Q1 application, or PCA85133U/2DB/Q1 equivalent, key selection considerations include I²C-bus interface timing, VLCD voltage range (2.5 V–8.0 V), extended temperature operation (−40 °C to +95 °C), and cascading capability for large-segment displays.
Technical Context
The PCA85133U/2DB/Q1 integrates a programmable LCD bias generator, display RAM with auto-increment addressing, and hardware subaddressing to minimize I²C communication overhead. Its internal oscillator (enabled via OSC–VSS) delivers precise frame timing, while SYNC pin coordination enables reliable cascading of up to 64 devices for 5120-segment systems.
It implements dynamic display memory bank switching between static and duplex drive modes, supports independent logic (1.8 V–5.5 V) and LCD (2.5 V–8.0 V) supplies, and provides versatile blinking control with no external components required-enabling direct Chip-On-Glass (COG) integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LCD Drive Capability | Up to 4 backplanes and 80 segments; supports static, 1:2, 1:3, and 1:4 multiplex configurations |
| I²C Interface Speed | 400 kHz - enables fast display updates without MCU resource contention |
| Frame Frequencies | 82 Hz or 110 Hz (typical) - selectable via FF pin; ensures flicker-free visibility in automotive environments |
| Supply Voltage Range | VDD: 1.8 V–5.5 V; VLCD: 2.5 V–8.0 V - accommodates low-threshold and high-threshold twisted nematic LCDs |
| Operating Temperature | −40 °C to +95 °C - meets automotive under-hood and dashboard thermal requirements |
| Display RAM | 80 × 4 bit static RAM - stores full segment state per backplane row with one-to-one mapping to S0–S79 and BP0–BP3 |
| AEC-Q100 Grade | Grade 2 qualified - validated for automotive applications requiring reliability at elevated temperatures |
Pinout & Package
Bare die package: 110 bumps, 4.16 mm × 1.07 mm × 0.40 mm; substrate (rear side) electrically isolated and referenced to VSS potential.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDAACK (1–3) | I²C acknowledge output | Signals successful byte reception on I²C bus; enables multi-device arbitration |
| SDA (4–6) | I²C serial data I/O | Bi-directional data line for command/data transfer; supports standard/fast-mode I²C |
| SCL (7–9) | I²C serial clock input | Master-generated clock synchronizing all I²C transactions |
| CLK (10) | Clock I/O | Outputs internal oscillator signal when OSC = VSS; accepts external clock when OSC = VDD |
| VDD (11–13) | Logic supply | Powers internal logic; operates from 1.8 V to 5.5 V with low quiescent current |
| SYNC (14) | Cascade synchronization I/O | Propagates timing alignment across daisy-chained PCA85133 devices |
| OSC (15) | Oscillator mode select | Tied to VSS for internal oscillator; tied to VDD for external clock input |
| FF (16) | Frame frequency select | Configures 82 Hz (VDD) or 110 Hz (VSS) frame rate; no effect with external clock |
| A0–A2 (17–19) | Hardware subaddress inputs | Enable device-select addressing in cascaded systems (up to 8 subaddresses) |
| SA0 (20) | Slave address bit | Extends I²C slave address to support multiple devices on same bus |
| VSS (21–23) | Ground reference | Logic and LCD ground return; substrate must be electrically isolated |
| VLCD (24–26) | LCD supply voltage | Provides adjustable bias voltage source (2.5 V–8.0 V); powers internal voltage-follower buffers |
| BP0–BP3 (27,28,109,110) | LCD backplane outputs | Drive up to four backplanes; configurable for parallel pairing in lower-multiplex modes |
| S0–S79 (29–108) | LCD segment outputs | Direct-drive outputs for 80 segments; unused pins left open-circuit |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCD bias generation | Internal voltage divider with switchable 1⁄2 or 1⁄3 bias paths eliminates external resistors and improves bias stability |
| Auto-incremental RAM addressing | Reduces I²C transaction count by automatically advancing data pointer based on drive mode (step size: 2–8) |
| Display memory bank switching | Enables seamless transition between static and duplex drive modes without display corruption or MCU intervention |
| Cascadable architecture | SYNC pin and subaddressing allow up to 64 devices to drive 5120 segments using single I²C bus and minimal layout changes |
| Independent supply domains | VDD and VLCD can be powered separately - supports mixed-voltage system design and reduces noise coupling |
Applications
| Automotive Instrument Cluster | Center-Stack Infotainment Display |
|---|---|
Use Scenario: Driving digital speedometer, fuel gauge, warning icons, and trip computer on analog/digital hybrid dashboards. IC Role / Device Role / Timing Role: Primary LCD controller driving 4-backplane, 80-segment glass with 1:4 multiplexing and 110 Hz frame rate. Use Value: AEC-Q100 qualification and −40 °C to +95 °C operation ensure reliability in vehicle cabin environments; integrated bias generator eliminates calibration drift. |
Use Scenario: Supporting multi-function menu navigation, climate settings, and media status on mid-tier automotive head units. IC Role / Device Role / Timing Role: Secondary display driver in cascaded configuration, managing alphanumeric characters and custom icons via I²C. Use Value: Hardware subaddressing and auto-wrap RAM access simplify firmware development for segmented UI elements across multiple devices. |
| Automotive HVAC Control Panel | Commercial Vehicle Telematics Display |
Use Scenario: Driving 14-segment alphanumeric readouts and status LEDs for temperature, fan speed, and air mode selection. IC Role / Device Role / Timing Role: Static or 1:2 multiplexed LCD driver with independent VLCD supply for high-contrast guest-host LCDs. Use Value: Wide VLCD range (2.5 V–8.0 V) enables compatibility with diverse LCD modules; low power consumption extends battery backup runtime. |
Use Scenario: Rendering fleet ID, GPS coordinates, diagnostic codes, and service alerts on ruggedized truck cab displays. IC Role / Device Role / Timing Role: Cascaded PCA85133U/2DB/Q1 array driving >320-element dot-matrix display with synchronized frame timing. Use Value: SYNC pin coordination prevents inter-device frame skew; extended temperature rating supports operation in unconditioned cab environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCF8576CT/1/1Z | 40-segment, 4-backplane max; no 1:3/1:4 multiplex; 1.8 V–6.0 V VDD only; no VLCD flexibility | Limited to smaller displays; lacks automotive qualification and extended temperature range | Choose for cost-sensitive non-automotive consumer panels with ≤40 segments |
| RAA229100GP#AA0 | 128-segment, 8-backplane; SPI interface only; 2.7 V–5.5 V VDD; requires external bias network | Higher segment count but no I²C support; no AEC-Q100 Grade 2 rating | Prefer for high-resolution industrial HMIs where SPI is already standardized and bias tuning is acceptable |
Compared with PCF8576CT/1/1Z and RAA229100GP#AA0, the PCA85133U/2DB/Q1 uniquely combines AEC-Q100 Grade 2 compliance, I²C interface, 80-segment capacity, and fully integrated bias generation - making it the only option qualified for automotive instrument cluster deployment with minimal BOM and layout overhead.
Availability
PCA85133U/2DB/Q1 is available at Aetrix Electronics and suitable for automotive instrument clusters, HVAC control panels, center-stack infotainment displays, and commercial vehicle telematics systems requiring stable component supply across long production lifecycles.
Supply support for PCA85133U/2DB/Q1 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 applications, with deep expertise in automotive-grade mixed-signal ICs.
The PCA85133 product line was designed specifically for automotive LCD display subsystems requiring high reliability, wide operating temperature, and flexible multiplexing - targeting instrument clusters, center consoles, and body control modules.
FAQ
What is the maximum number of segments the PCA85133U/2DB/Q1 can drive in a single device?
The PCA85133U/2DB/Q1 drives up to 80 segments with up to 4 backplanes. In 1:4 multiplex mode, this supports 320 distinct LCD elements (4 × 80). When cascaded, up to 64 devices can drive 5120 total segments - confirmed in Section 2 and Table 5 of the PCA85133 datasheet Rev. 3.
Does the PCA85133U/2DB/Q1 require external components for LCD bias generation?
No. The PCA85133U/2DB/Q1 includes an internal LCD bias generator with voltage-follower buffers and switchable impedance networks for 1⁄2 or 1⁄3 bias - eliminating external resistors or capacitors. This is explicitly stated in Section 2 "Features and benefits" and Section 7.2 "LCD bias generator".
How does the PCA85133U/2DB/Q1 handle cascading with multiple devices on one I²C bus?
The PCA85133U/2DB/Q1 uses hardware subaddressing (A0–A2 pins) and the SYNC pin for timing alignment. Data auto-wraps across device boundaries during RAM writes, and the SYNC signal ensures frame synchronization across the cascade - detailed in Sections 6.2, 7.6, and Figure 4 of the datasheet.
What is the function of the FF pin on the PCA85133U/2DB/Q1?
The FF pin selects LCD frame frequency: tied to VDD yields ~82 Hz; tied to VSS yields ~110 Hz. It has no effect when an external clock is used (OSC = VDD), but must not float. This behavior is defined in Table 7 and Section 7.6 of the PCA85133 datasheet Rev. 3.
Is the PCA85133U/2DB/Q1 compatible with Chip-On-Glass (COG) LCD modules?
Yes. The PCA85133U/2DB/Q1 is explicitly listed as "Compatible with Chip-On-Glass (COG) technology" in Section 2 "Features and benefits". Its bare-die packaging (110 bumps, 4.16 mm × 1.07 mm) and direct segment/backplane drive capability make it suitable for COG integration.
PCA85133U/2DB/Q1,0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Display Type:
- -
- Configuration:
- -
- Interface:
- -
- Digits or Characters:
- -
- Current - Supply:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PCA85133U/2DB/Q1,0 FAQ
1.How can I place an order for PCA85133U/2DB/Q1,0 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA85133U/2DB/Q1,0 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 PCA85133U/2DB/Q1,0 reliable?
The price and inventory of PCA85133U/2DB/Q1,0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA85133U/2DB/Q1,0 is usually 5 days.
3.What payment methods are accepted for PCA85133U/2DB/Q1,0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA85133U/2DB/Q1,0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA85133U/2DB/Q1,0?
PCA85133U/2DB/Q1,0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA85133U/2DB/Q1,0 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 PCA85133U/2DB/Q1,0?
For technical support, including PCA85133U/2DB/Q1,0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA85133U/2DB/Q1,0 requirements.
6.How does Aetrix verify that PCA85133U/2DB/Q1,0 is sourced from the original manufacturer or authorized distributors?
All PCA85133U/2DB/Q1,0 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 PCA85133U/2DB/Q1,0 meets industry standards.
7.What is the process for return or replacement of PCA85133U/2DB/Q1,0?
All PCA85133U/2DB/Q1,0 units undergo pre-shipment inspection (PSI). If there is an issue with PCA85133U/2DB/Q1,0, 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 PCA85133U/2DB/Q1,0 part is unused and in its original packaging.
Return procedure for PCA85133U/2DB/Q1,0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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