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NXP Semiconductors PCA85232U/2DA/Q1,0
- Part No.:
- PCA85232U/2DA/Q1,0
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- -
- Datasheet:
-
PCA85232U/2DA/Q1,0.pdf
- Description:
- IC LCD DRIVER UNCASED
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Inventory:1,635
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Product details
Overview
PCA85232U/2DA/Q1,0 from NXP Semiconductors is an AEC-Q100 qualified LCD controller and driver IC for automotive-grade static or multiplexed LCDs with up to 4 backplanes and 160 segments (640 total elements). It integrates I²C-bus interface, internal LCD bias generator, 160 × 4-bit display RAM, and programmable frame frequency (117–176 Hz) - enabling direct drive of instrument cluster displays, HVAC panels, and infotainment status indicators.
For engineers reviewing the PCA85232U/2DA/Q1,0 datasheet, PCA85232U/2DA/Q1,0 pinout, PCA85232U/2DA/Q1,0 application, or PCA85232U/2DA/Q1,0 equivalent, this device delivers verified automotive-grade LCD drive capability with no external bias components, cascading support for >5k-element displays, and factory-calibrated internal oscillator timing.
Technical Context
The PCA85232U/2DA/Q1,0 implements a fully integrated LCD drive architecture with hardware subaddressing, auto-incremental RAM addressing, and dual-bank display memory switching for static/duplex modes. Its internal voltage-follower LCD bias generator supports selectable 1/2 or 1/3 bias configurations and operates across VLCD = 1.8 V to 8.0 V - matching low-threshold and high-threshold twisted nematic LCDs used in automotive environments.
Timing is derived either from its factory-calibrated ±5.1% internal oscillator (3.5 kHz nominal) or an external clock applied to CLK; frame frequency is fixed at 1/64 or 1/74 of the selected clock source depending on drive mode. Cascading is enabled via SYNC pin and synchronized CLK output, supporting up to 5120-element systems using multiple PCA85232 devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Drive Capability | Up to 4 backplanes and 160 segments (640 elements); supports static, 1:2, 1:3, or 1:4 multiplex modes |
| I²C Interface | 400 kHz bidirectional bus; slave address configurable via SA0, subaddressing via A0/A1 |
| Display RAM | 160 × 4-bit static RAM with auto-increment addressing and bank-select for dual-display buffering |
| Frame Frequency | 117–176 Hz (factory-calibrated internal oscillator); adjustable via frequency-ctrl command |
| Supply Ranges | VDD = 1.8–5.5 V; VLCD = 1.8–8.0 V; logic and LCD supplies separable |
| Power Consumption | IDD = 4 µA (logic), IDD(LCD) = 65 µA (typical); enables low-power automotive standby operation |
| Automotive Qualification | AEC-Q100 Grade 2 (−40 °C to +105 °C ambient); qualified for instrument panel and center stack use |
Pinout & Package
Bare die package: 197 bumps, 6.5 × 1.16 × 0.40 mm; substrate connected to VSS and must be electrically isolated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDAACK (pins 1–3) | I²C acknowledge output | Open-drain signal confirming successful I²C data reception; shorted to SDA in most designs |
| SDA (pins 4–6) | I²C serial data I/O | Bi-directional data line for command/data transfer; requires pull-up resistor to VDD |
| SCL (pins 7–9) | I²C serial clock input | Master-generated clock synchronizing all I²C transactions; 400 kHz max rate |
| CLK (pin 10) | Clock I/O | Output when internal oscillator active (OSC = VSS); input when external clock used (OSC = VDD) |
| VDD (pins 11–13) | Logic supply | 1.8–5.5 V power for digital core; decoupling capacitor required near die edge |
| SYNC (pin 14) | Cascade synchronization | Input/output for chaining multiple PCA85232 devices; enables synchronized frame updates |
| OSC (pin 15) | Oscillator mode select | Connect to VSS for internal oscillator; connect to VDD for external clock input |
| A0, A1 (pins 21–22) | Hardware subaddress inputs | Select one of four 40-byte subaddress blocks within 160-byte display RAM |
| SA0 (pin 23) | Slave address bit | Configures LSB of 7-bit I²C slave address (0x70 or 0x71); enables multi-device bus sharing |
| VSS (pins 24–26) | Ground reference | Logic and LCD ground; substrate connection point; must be isolated from PCB ground plane |
| VLCD (pins 27–29) | LCD supply voltage | 1.8–8.0 V analog supply for segment/backplane outputs; bypass capacitor required |
| BP0–BP3 (pins 30–31, 112–115, 196–197) | LCD backplane drivers | Dedicated outputs per backplane; pins duplicated across top/bottom die edges for routing flexibility |
| S0–S159 (pins 32–111, 116–195) | LCD segment drivers | 160 independent segment outputs; unused pins must remain open-circuit |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCD bias generation | Eliminates external resistive divider or charge pump; supports 1/2 or 1/3 bias selection per drive mode |
| Cascadable architecture | SYNC and CLK pins enable synchronous multi-chip operation for displays exceeding 640 elements |
| Versatile blinking control | Three blink frequencies (1.14–4.56 Hz) plus alternate-RAM-bank mode for static/1:2 drive without host overhead |
| COG-compatible output structure | Dual-position backplane/segment pins (top/bottom die edges) simplify Chip-on-Glass interconnect routing |
| Low-power automotive operation | 4 µA logic current + 65 µA LCD drive current enables always-on dashboard display functionality |
Applications
| Automotive Instrument Cluster | HVAC Control Panel |
|---|---|
Use Scenario: Driving speed, fuel level, warning icons, and gear position displayed on analog-style segmented LCD. IC Role / Device Role / Timing Role: Primary LCD controller/driver; generates multiplexed waveforms for 4-backplane, 128-segment display with 137 Hz frame rate. Use Value: AEC-Q100 qualification ensures reliability at 105 °C; internal bias generator reduces BOM count by 5 components. |
Use Scenario: Temperature setpoint, fan speed, air direction, and mode indicators on compact automotive climate module. IC Role / Device Role / Timing Role: Static-mode driver for 20-character 7-segment display (S0–S19) with dedicated BP0 output. Use Value: 1.8 V logic compatibility enables direct interface with 1.8 V microcontrollers; no external clock required. |
| Infotainment Status Display | Commercial Vehicle Telematics |
Use Scenario: Media source, Bluetooth status, call timer, and signal strength shown on 14-segment alphanumeric LCD. IC Role / Device Role / Timing Role: 1:2 multiplex driver for 40-character display (S0–S79 + BP0/BP1); uses 1/2 bias for optimal contrast. Use Value: Auto-increment RAM addressing reduces I²C traffic by 60% vs. byte-by-byte writes; blink-select enables UI attention cues. |
Use Scenario: Fleet ID, GPS status, engine diagnostics, and maintenance alerts on ruggedized truck cab display. IC Role / Device Role / Timing Role: Cascaded configuration (2× PCA85232) driving 320-element display (2 backplanes × 160 segments). Use Value: SYNC-synchronized frame updates prevent visual tearing across multi-chip displays; -40 °C start-up validated. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCF8576D/1,118 | 40-segment × 4-backplane max; no internal oscillator; requires external bias network | Limited to smaller displays (160 elements); lacks AEC-Q100 qualification and cascading support | Choose for cost-sensitive non-automotive applications where display size ≤ 160 elements |
| RA8835-GN | Parallel interface only; 132 × 64 dot-matrix focus; no I²C; higher power (1.2 mA typical) | Designed for graphic LCDs, not segment-based automotive panels; incompatible bus and memory model | Choose only when migrating from legacy parallel-driven monochrome graphic displays |
Compared with PCF8576D/1,118 and RA8835-GN, the PCA85232U/2DA/Q1,0 uniquely combines AEC-Q100 compliance, I²C simplicity, internal bias, and scalable cascading - making it the only qualified solution for new automotive segment-LCD designs requiring >160 elements or 1:3/1:4 multiplexing.
Availability
PCA85232U/2DA/Q1,0 is available at Aetrix Electronics and suitable for automotive instrument clusters, HVAC control panels, and infotainment status displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PCA85232U/2DA/Q1,0 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 mixed-signal and automotive-qualified IC design.
The PCA85232 belongs to NXP's automotive LCD driver product line, engineered specifically for AEC-Q100-compliant segment-based displays in instrument clusters, center consoles, and body control modules.
FAQ
What is the maximum LCD element count supported by the PCA85232U/2DA/Q1,0 in single-device and cascaded configurations?
The PCA85232U/2DA/Q1,0 supports up to 640 LCD elements (4 backplanes × 160 segments) in standalone operation. When cascaded using the SYNC and CLK pins, up to eight devices can be synchronized to drive 5120 elements - confirmed in Section 14.4 of the datasheet and validated in automotive telematics reference designs.
Does the PCA85232U/2DA/Q1,0 require external components for LCD bias generation?
No. The PCA85232U/2DA/Q1,0 includes an internal voltage-follower LCD bias generator that eliminates external resistors or charge pumps. It supports 1/2 or 1/3 bias selection via the mode-set command and operates across VLCD = 1.8–8.0 V - as specified in Sections 7.3.1 and Table 15 of the datasheet.
How does the PCA85232U/2DA/Q1,0 handle power-on initialization and reset behavior?
At power-on, the PCA85232U/2DA/Q1,0 performs a hardware Power-On Reset (POR) that sets all outputs to VLCD, configures 1:4 multiplex mode with 1/3 bias, disables display (bit E = 0), clears RAM pointers, and initializes the I²C interface - as defined in Section 7.2. Host firmware must wait ≥1 ms before issuing I²C commands.
Can the PCA85232U/2DA/Q1,0 drive both static and multiplexed LCDs, and how is the mode selected?
Yes. The PCA85232U/2DA/Q1,0 supports static, 1:2, 1:3, and 1:4 multiplex modes via the mode-set command (bit M[1:0] in Table 6). Static mode uses BP0 only; 1:2 uses BP0/BP1; 1:3 uses BP0/BP1/BP2; 1:4 uses all four backplanes - with corresponding bias and waveform generation handled automatically.
Is the PCA85232U/2DA/Q1,0 compatible with Chip-On-Glass (COG) LCD modules?
Yes. The PCA85232U/2DA/Q1,0 is explicitly designed for COG compatibility: its dual-position backplane/segment pins (top and bottom die edges), low-voltage logic interface (1.8 V min), and absence of external bias components simplify integration with COG-mounted glass substrates - as stated in Section 2 "Features and benefits" and Figure 5.
PCA85232U/2DA/Q1,0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Display Type:
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- Configuration:
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- Interface:
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- Digits or Characters:
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PCA85232U/2DA/Q1,0 FAQ
1.How can I place an order for PCA85232U/2DA/Q1,0 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA85232U/2DA/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 PCA85232U/2DA/Q1,0 reliable?
The price and inventory of PCA85232U/2DA/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 PCA85232U/2DA/Q1,0 is usually 5 days.
3.What payment methods are accepted for PCA85232U/2DA/Q1,0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA85232U/2DA/Q1,0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA85232U/2DA/Q1,0?
PCA85232U/2DA/Q1,0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA85232U/2DA/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 PCA85232U/2DA/Q1,0?
For technical support, including PCA85232U/2DA/Q1,0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA85232U/2DA/Q1,0 requirements.
6.How does Aetrix verify that PCA85232U/2DA/Q1,0 is sourced from the original manufacturer or authorized distributors?
All PCA85232U/2DA/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 PCA85232U/2DA/Q1,0 meets industry standards.
7.What is the process for return or replacement of PCA85232U/2DA/Q1,0?
All PCA85232U/2DA/Q1,0 units undergo pre-shipment inspection (PSI). If there is an issue with PCA85232U/2DA/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 PCA85232U/2DA/Q1,0 part is unused and in its original packaging.
Return procedure for PCA85232U/2DA/Q1,0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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