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NXP Semiconductors PCA85176T/Q900/1,1
- Part No.:
- PCA85176T/Q900/1,1
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PCA85176T/Q900/1,1.pdf
- Description:
- IC DRVR 40 SEGMENT 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,514
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Product details
Overview
PCA85176T/Q900/1,1 from NXP Semiconductors is an AEC-Q100 qualified automotive LCD driver IC supporting static or multiplexed displays with up to 4 backplanes and 40 segments. It delivers 40 × 4-bit display RAM, selectable 1/2 or 1/3 bias, 400 kHz I²C-bus interface, and internal LCD bias generation - enabling direct drive of up to 160-segment automotive instrument cluster displays.
For engineers reviewing the PCA85176T/Q900/1,1 datasheet, PCA85176T/Q900/1,1 pinout, PCA85176T/Q900/1,1 application, or PCA85176T/Q900/1,1 equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade operating range (−40 °C to +95 °C), real-world drive mode waveforms, and two documented alternative parts for display subsystem design continuity.
Technical Context
The PCA85176T/Q900/1,1 implements a dedicated LCD controller core with hardware subaddressing, auto-incremented display RAM addressing, and dual-bank memory switching for static and duplex drive modes. Its internal oscillator (enabled via OSC–VSS) or external clock (via CLK input) generates frame timing synchronized across cascaded units using the SYNC pin.
It supports four LCD drive configurations: static (1 BP), 1:2 (2 BP), 1:3 (3 BP), and 1:4 (4 BP) multiplexing - each with corresponding bias selection (1/2 or 1/3) and RMS voltage profiles defined per IEC 60836. Backplane outputs BP0–BP3 and segment outputs S0–S39 are fully buffered and electrically isolated for direct LCD panel connection without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Display Capacity | Up to 40 segments × 4 backplanes = 160 LCD elements; supports 20×7-seg or 10×14-seg alphanumeric displays |
| I²C Interface Speed | 400 kHz Fast-mode - enables low-overhead microcontroller communication with auto-incremented RAM addressing |
| Operating Temperature | −40 °C to +95 °C - qualified per AEC-Q100 Grade 3 for under-hood and dashboard automotive environments |
| Supply Voltage Range | VDD: 1.8 V to 5.5 V; VLCD: 2.5 V to 8.0 V - allows independent logic/LCD rail optimization for guest-host or high-threshold TN LCDs |
| Drive Mode Flexibility | Configurable static, 1:2, 1:3, or 1:4 multiplexing with selectable 1/2 or 1/3 bias - matches electro-optical requirements of diverse LCD modules |
| Memory Architecture | 40 × 4-bit static display RAM with bank-select control - enables flicker-free display memory switching in static/duplex modes |
| Power Efficiency | Low quiescent current; no external bias resistors or capacitors required - reduces BOM count and PCB area in space-constrained clusters |
Pinout & Package
PCA85176T/Q900/1,1 is housed in a TSSOP56 package (SOT364-1), 56-pin, body width 6.1 mm, lead pitch 0.5 mm. Pin functions are validated per NXP datasheet Rev. 6.1 Figures 3 and Table 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA (Pin 44) | I²C serial data line | Open-drain bidirectional interface; requires external pull-up to VDD for standard I²C protocol compliance |
| SCL (Pin 45) | I²C serial clock input | Master-generated clock synchronizing all I²C transfers; supports 400 kHz operation |
| BP0–BP3 (Pins 56, 1, 2, 3) | LCD backplane outputs | Direct-drive outputs; in 1:4 mode, each drives one backplane; in static mode, all carry identical waveform for parallel current sharing |
| S0–S39 (Pins 4–43) | LCD segment outputs | 40 buffered outputs mapped 1:1 to display RAM columns; left open when unused - no termination needed |
| VLCD (Pin 55) | LCD supply voltage | Independent high-voltage rail (2.5–8.0 V); powers internal bias generator and segment/backplane drivers |
| OSC (Pin 49) | Oscillator enable | Tied to VSS to enable internal RC oscillator; tied to VDD to accept external clock on CLK pin |
| SYNC (Pin 46) | Cascade synchronization | Input/output for frame-aligned timing across multiple PCA85176 devices - prevents display tearing in large-panel systems |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCD bias generator | On-chip voltage divider with switchable impedance - eliminates external resistor networks and improves bias stability over temperature |
| Hardware subaddressing (A0–A2, SA0) | Enables up to 8 independent device addresses on same I²C bus - simplifies multi-driver system topology without address jumpers |
| Versatile blinking control | Configurable blink frequency (off, 1×, 2×, 3× base rate) and mode (full-display or bank-alternate) - implemented in hardware, zero MCU intervention |
| Cascadable architecture | SYNC pin and auto-incremented addressing allow seamless expansion to 2560 segments - supports large automotive HUD or center-stack displays |
| Extended VLCD range (2.5–8.0 V) | Supports both low-threshold STN and high-threshold guest-host LCDs - avoids redesign when upgrading display technology |
Applications
| Automotive Instrument Cluster | Automotive HVAC Display |
|---|---|
Use Scenario: Digital speedometer, fuel gauge, warning icons, and trip computer in modern vehicle dashboards. IC Role / Device Role / Timing Role: Primary LCD controller/driver managing up to 160 segments across 4 backplanes; handles real-time display updates via I²C from MCU. Use Value: AEC-Q100 qualification ensures reliability at 95 °C ambient; internal bias generation eliminates calibration drift across temperature extremes. |
Use Scenario: Multi-zone climate control panel with numeric setpoints, fan speed, and mode indicators. IC Role / Device Role / Timing Role: Dedicated segment driver offloading MCU display tasks; uses static or 1:2 multiplexing for crisp 7- or 14-segment digits. Use Value: 400 kHz I²C interface minimizes bus occupancy; independent VLCD rail allows optimal contrast tuning for different LCD glass types. |
| Automotive Center Console | Commercial Vehicle Telematics Display |
Use Scenario: Infotainment status bar, connectivity icons, and vehicle settings menu on mid-tier center stack displays. IC Role / Device Role / Timing Role: Secondary display controller handling auxiliary UI elements; operates in 1:4 multiplex mode for higher segment density. Use Value: Dual-bank RAM switching enables smooth icon animation without MCU polling; SYNC pin ensures frame coherence with primary display driver. |
Use Scenario: Ruggedized fleet management terminal with odometer, GPS status, and diagnostic alerts in trucks/buses. IC Role / Device Role / Timing Role: Robust LCD driver for wide-temperature industrial-grade panels; leverages extended −40 °C to +95 °C operation. Use Value: No external components required - improves long-term field reliability in vibration-prone environments; dry-pack packaging (Q900/1) ensures moisture resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA85176T/Q900/1Y | Identical functionality and pinout; dry-pack variant with enhanced moisture sensitivity level (MSL 1) vs. Q900/1's non-dry pack (MSL 3) | Preferred for high-reliability reflow processes where humidity-induced popcorning must be avoided | Select Q900/1Y for new designs requiring guaranteed MSL 1 handling; Q900/1 remains valid for legacy assembly lines with controlled humidity. |
| PCF8576T/1,1 | Also 40×4 automotive LCD driver but lacks SYNC pin and bank-select command; supports only static/1:2/1:4 modes (no 1:3) | Not suitable for applications requiring alternate-RAM-bank blinking or precise multi-device frame sync | Use only if cascade synchronization and 1:3 multiplexing are not required; verify compatibility with existing firmware command set. |
Compared with PCA85176T/Q900/1Y, the PCA85176T/Q900/1,1 offers identical electrical and functional performance but requires stricter moisture handling during PCB assembly; versus PCF8576T/1,1, it adds critical 1:3 multiplex support and hardware-level frame synchronization - essential for advanced automotive display architectures.
Availability
PCA85176T/Q900/1,1 is available at Aetrix Electronics and suitable for automotive instrument clusters, HVAC interfaces, center console displays, and commercial vehicle telematics requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for PCA85176T/Q900/1,1 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in mixed-signal and power-efficient interface ICs.
The PCA85176 product line delivers integrated LCD controller/drivers optimized for AEC-Q100-compliant automotive human-machine interfaces - designed to replace discrete bias networks and reduce MCU display overhead in safety-critical clusters and consoles.
FAQ
What is the maximum LCD segment count supported by PCA85176T/Q900/1,1?
The PCA85176T/Q900/1,1 supports up to 40 segments and 4 backplanes, delivering a total of 160 individually controllable LCD elements. This capacity enables configurations such as 20 seven-segment digits, 10 fourteen-segment alphanumeric characters, or custom graphics layouts - all within a single TSSOP56 package without external components.
Does PCA85176T/Q900/1,1 require external bias resistors?
No, the PCA85176T/Q900/1,1 integrates a programmable LCD bias generator with internal voltage division and switching. It produces precise 1/2 or 1/3 bias voltages directly from VLCD, eliminating the need for external resistor networks and improving thermal stability across the −40 °C to +95 °C automotive operating range.
How does PCA85176T/Q900/1,1 handle display blinking?
The PCA85176T/Q900/1,1 supports two hardware-controlled blinking modes: full-display blink (using mode-set E-bit toggling) and alternate-RAM-bank blink (via blink-select command). Blink frequencies are derived from the internal or external clock and configurable as off, 1×, 2×, or 3× base rate - all implemented without MCU intervention.
Can PCA85176T/Q900/1,1 drive high-threshold guest-host LCDs?
Yes, the PCA85176T/Q900/1,1 supports VLCD from 2.5 V to 8.0 V, making it compatible with high-threshold guest-host and twisted nematic LCDs. Its internal bias generator scales accordingly, and the 1/3 bias configuration in 1:4 multiplex mode ensures sufficient RMS on/off voltage discrimination for high-contrast operation.
Is PCA85176T/Q900/1,1 pin-compatible with PCA85176H variants?
No, PCA85176T/Q900/1,1 (TSSOP56) and PCA85176H variants (TQFP64) have different pin counts, layouts, and mechanical footprints. While functionally identical, they are not pin-compatible - PCB layout and routing must be redesigned when migrating between packages. Always verify pin mapping against Figures 2 and 3 in the datasheet.
PCA85176T/Q900/1,1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Display Type:
- LCD
- Configuration:
- 40 Segment
- Interface:
- I2C
- Digits or Characters:
- -
- Current - Supply:
- 3.5 µA
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 95°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
PCA85176T/Q900/1,1 FAQ
1.How can I place an order for PCA85176T/Q900/1,1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA85176T/Q900/1,1 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 PCA85176T/Q900/1,1 reliable?
The price and inventory of PCA85176T/Q900/1,1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA85176T/Q900/1,1 is usually 5 days.
3.What payment methods are accepted for PCA85176T/Q900/1,1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA85176T/Q900/1,1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA85176T/Q900/1,1?
PCA85176T/Q900/1,1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA85176T/Q900/1,1 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 PCA85176T/Q900/1,1?
For technical support, including PCA85176T/Q900/1,1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA85176T/Q900/1,1 requirements.
6.How does Aetrix verify that PCA85176T/Q900/1,1 is sourced from the original manufacturer or authorized distributors?
All PCA85176T/Q900/1,1 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 PCA85176T/Q900/1,1 meets industry standards.
7.What is the process for return or replacement of PCA85176T/Q900/1,1?
All PCA85176T/Q900/1,1 units undergo pre-shipment inspection (PSI). If there is an issue with PCA85176T/Q900/1,1, 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 PCA85176T/Q900/1,1 part is unused and in its original packaging.
Return procedure for PCA85176T/Q900/1,1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCA85176T/Q900/1,1 Tags
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PCA8561AHN/AY
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SN74LS47N
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PCF85176T/1Y
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AS1115-BSST
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