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NXP Semiconductors PCA85262ATT/AJ
- Part No.:
- PCA85262ATT/AJ
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PCA85262ATT/AJ.pdf
- Description:
- IC DRVR 7 SEGMENT 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,417
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Product details
Overview
PCA85262ATT/AJ from NXP Semiconductors is an AEC-Q100 Grade 2 automotive LCD controller/driver IC supporting static or multiplexed LCDs with up to 4 backplanes and 32 segments. It features 32 × 4-bit display RAM, I²C-bus interface (400 kHz), selectable bias (1/2 or 1/3), and operates from 1.8 V to 5.5 V logic supply with independent VLCD up to 8.0 V. It is used in instrument clusters and infotainment displays requiring robust, low-multiplex-rate segment driving.
For engineers reviewing the PCA85262ATT/AJ datasheet, PCA85262ATT/AJ pinout, PCA85262ATT/AJ application, or PCA85262ATT/AJ equivalent, key selection considerations include its TSSOP48 package, 400 kHz I²C timing, static/2/3/4-backplane drive mode support, internal bias generation, and automotive-grade temperature range (−40 °C to +85 °C).
Technical Context
The PCA85262ATT/AJ implements a dedicated LCD controller architecture with integrated bias generator, display RAM bank switching (static and 1:2 modes), and hardware subaddressing for cascaded configurations. Its I²C interface uses auto-incremented addressing and continuation-bit command framing to minimize bus overhead.
It supports four LCD drive modes-static, 1:2, 1:3, and 1:4 multiplex-with corresponding RAM mapping rules and frame timing derived from internal oscillator (OSC→VSS) or external clock (OSC→VDD). Blink control is implemented via dedicated command register with frequency scaling relative to clock input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| I²C Bus Speed | 400 kHz - Enables fast display updates without MCU polling; compatible with standard-mode I²C controllers. |
| Display RAM | 32 × 4-bit - Stores full state of 128 LCD elements; organized as 4 rows × 32 columns mapped to BP0–BP3 and S0–S31. |
| LCD Drive Modes | Static, 1:2, 1:3, 1:4 - Configurable via mode-set command; determines RAM row usage and segment/backplane time-division. |
| LCD Bias Options | 1/2 or 1/3 bias - Internally generated; eliminates need for external resistor networks; not applicable in static mode. |
| Supply Ranges | VDD: 1.8 V–5.5 V; VLCD: 2.5 V–8.0 V - Supports low-threshold and guest-host LCDs; enables independent logic/LCD rail optimization. |
| Temperature Range | −40 °C to +85 °C - Validated for automotive cabin environments; meets AEC-Q100 Grade 2 requirements. |
| Package | TSSOP48 (SOT362-1) - 6.1 mm body width; surface-mount; suitable for high-density automotive PCB layouts. |
Pinout & Package
TSSOP48 package (SOT362-1), 48-pin plastic thin shrink small outline, 0.5 mm pitch, 6.1 mm body width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA (Pin 10) | I²C serial data line | Open-drain bidirectional interface; requires external pull-up; handles command/data transfers with auto-increment addressing. |
| SCL (Pin 11) | I²C serial clock input | Master-generated clock; supports up to 400 kHz; synchronizes all I²C transactions including multi-byte writes. |
| SYNC (Pin 12) | Cascade synchronization I/O | Enables synchronized frame timing across multiple PCA85262 devices; open when unused. |
| CLK (Pin 13) | Internal/external clock I/O | Outputs internal oscillator signal when OSC = VSS; accepts external clock when OSC = VDD; defines LCD frame rate. |
| VDD (Pin 14) | Logic supply | 1.8 V–5.5 V input; powers digital core, I²C interface, and RAM; decoupling required per automotive layout guidelines. |
| OSC (Pin 15) | Oscillator enable control | Connect to VSS to enable internal RC oscillator (~120 kHz typical); connect to VDD to use external clock on CLK pin. |
| A0, A1 (Pins 16–17) | Hardware subaddress inputs | Set 2-bit device address offset for I²C cascading; matched against subaddress counter to gate RAM writes. |
| T1 (Pin 18) | Test pin | Must be tied to VSS in application mode; used for factory testing only; no functional role in operation. |
| SA0 (Pin 19) | I²C slave address bit | Configures LSB of 7-bit I²C address (0x70–0x77); allows up to 8 devices on same bus with unique SA0/A0/A1 combinations. |
| VSS (Pin 20) | Ground reference | Digital ground return; must be low-impedance connection; separate from analog ground if mixed-signal layout used. |
| VLCD (Pin 21) | LCD supply voltage | 2.5 V–8.0 V input; powers LCD segment/backplane drivers; internally divided for bias generation; requires local filtering. |
| BP0–BP3 (Pins 22–25) | LCD backplane outputs | Four complementary outputs; active in selected multiplex mode; drive common electrodes of up to 4-backplane LCDs. |
| S0–S31 (Pins 26–48, 1–9) | LCD segment outputs | 32 independent segment drivers; sink current for common-anode LCDs; output waveform polarity depends on drive mode. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 2 certified - Ensures reliability under thermal shock, vibration, and extended temperature cycling in vehicle cabins. |
| RAM bank switching | Independent input/output bank selection in static and 1:2 modes - Enables flicker-free display updates by preloading alternate RAM banks. |
| Versatile blinking | Programmable blink frequency (off, 1×, 2× relative to clock) and mode (normal or alternate-bank) - Supports UI status indicators without MCU intervention. |
| No external components | Integrated LCD bias generator and voltage-follower buffers - Eliminates external resistors, capacitors, or op-amps; reduces BOM count and layout area. |
| Cascadable architecture | Hardware subaddressing (A0/A1) and SYNC pin - Allows expansion beyond 32×4 using multiple PCA85262ATT/AJ in synchronized chain. |
Applications
| Instrument Cluster Display | Climate Control Panel |
|---|---|
|
Use Scenario: Driving environment with ambient light variation and vibration; requires legible, low-power, long-life display. IC Role / Device Role / Timing Role: Primary LCD segment driver controlling 4-backplane, 32-segment alphanumeric display; generates precise AC waveforms to prevent LCD image retention. Use Value: Internal bias generation and wide VLCD range (up to 8.0 V) enable direct drive of high-threshold twisted nematic LCDs without external components. |
Use Scenario: In-cabin HVAC interface with tactile buttons and segmented display showing temperature, fan speed, and mode icons. IC Role / Device Role / Timing Role: Dedicated display controller handling static and 1:2 multiplexed segments; manages RAM bank switching for smooth icon transitions. Use Value: 32 × 4-bit RAM and auto-increment addressing reduce I²C transaction count during display refresh, lowering MCU firmware overhead. |
| Infotainment Status Bar | Driver Information Module |
|
Use Scenario: Compact auxiliary display adjacent to main touchscreen, showing connectivity status, audio source, and system alerts. IC Role / Device Role / Timing Role: Secondary display driver in cascaded configuration; synchronized via SYNC pin to avoid visual tearing across multiple panels. Use Value: Hardware subaddressing (A0/A1) and SA0 allow up to 8 devices on one I²C bus, simplifying wiring and reducing MCU GPIO usage. |
Use Scenario: Safety-critical HUD or head-unit display requiring guaranteed startup behavior and ESD-hardened interface. IC Role / Device Role / Timing Role: Automotive-grade LCD driver with POR-free design initialized via I²C dummy byte sequence; supports −40 °C cold start. Use Value: AEC-Q100 Grade 2 compliance and extended temperature range ensure functional stability during engine-off battery drain and hot soak conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA85262ATT/AY | Identical silicon; dry-pack packaging instead of non-dry reel; same TSSOP48 footprint and electrical specs. | No functional difference; intended as drop-in replacement per PCN202102010F01; preferred for moisture-sensitive handling. | Select PCA85262ATT/AY for new designs requiring JEDEC-compliant dry pack; PCA85262ATT/AJ remains valid for legacy procurement. |
| PCF8576CT | Also 32×4 LCD driver but lacks AEC-Q100 qualification; lower max VLCD (6.5 V); no bank switching or alternate-bank blink mode. | Restricted to industrial/consumer applications; unsuitable for automotive under-hood or cabin modules requiring Grade 2 reliability. | Use PCF8576CT only in non-automotive contexts where cost is prioritized over automotive qualification and advanced blink features. |
Compared with PCA85262ATT/AY, the PCA85262ATT/AJ offers identical functionality but differs in packing method (non-dry vs. dry), while PCF8576CT lacks automotive qualification, bank switching, and higher VLCD capability - making PCA85262ATT/AJ the sole choice for AEC-Q100-compliant 32×4 LCD systems requiring robustness and feature completeness.
Availability
PCA85262ATT/AJ is available at Aetrix Electronics and suitable for automotive instrument clusters, climate control panels, and driver information modules requiring stable component supply across production lifecycles.
Supply support for PCA85262ATT/AJ 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.
The PCA85262ATT/AJ belongs to NXP's automotive LCD driver product line, designed specifically for reliable, low-multiplex-rate segment driving in harsh vehicular environments with minimal external components.
FAQ
What is the maximum LCD segment count supported by the PCA85262ATT/AJ?
The PCA85262ATT/AJ supports up to 128 LCD segments/elements - achieved by driving 32 segment outputs across 4 backplanes (32 × 4). This enables configurations such as 16 seven-segment digits, 8 fourteen-segment alphanumeric characters, or custom graphics layouts within that element limit. The PCA85262ATT/AJ does not support more than 4 backplanes or exceed 32 segments per backplane.
Does the PCA85262ATT/AJ require external bias resistors?
No, the PCA85262ATT/AJ includes an integrated LCD bias generator with voltage-follower buffers, eliminating the need for external resistors or capacitors to generate 1/2 or 1/3 bias voltages. This is confirmed in the datasheet Section 2 features and Section 6.6; bias configuration is selected via the mode-set command and applies automatically to internal waveform generation.
How is the PCA85262ATT/AJ initialized after power-on?
The PCA85262ATT/AJ lacks a power-on reset circuit, so initialization requires two steps: first, an I²C START–dummy byte (0x00)–STOP sequence to initialize the bus interface; second, issuing mode-set, load-data-pointer, device-select, bank-select, and blink-select commands to configure drive mode, RAM addressing, subaddress, bank selection, and blink behavior before enabling display output.
Can multiple PCA85262ATT/AJ devices be cascaded on one I²C bus?
Yes, multiple PCA85262ATT/AJ devices can be cascaded using hardware subaddressing (A0/A1 pins) and the SYNC pin for frame synchronization. Each device is assigned a unique 2-bit subaddress; the device-select command targets individual units, and SYNC ensures simultaneous LCD frame updates across the chain - critical for seamless multi-panel displays.
What is the purpose of the T1 pin on the PCA85262ATT/AJ?
The T1 pin (Pin 18) is a dedicated test pin used exclusively during factory wafer and package testing. In application circuits, T1 must be tied to VSS (ground) and has no functional role in normal operation. Leaving it floating or connecting it to other signals may impair device reliability or violate automotive qualification requirements.
PCA85262ATT/AJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Display Type:
- LCD
- Configuration:
- 7 Segment + DP, 14 Segment + DP + AP, Dot Matrix
- Interface:
- I2C
- Digits or Characters:
- 8 Characters, 16 Characters, 128 Elements
- Current - Supply:
- 6 µA
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
PCA85262ATT/AJ FAQ
1.How can I place an order for PCA85262ATT/AJ through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA85262ATT/AJ 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 PCA85262ATT/AJ reliable?
The price and inventory of PCA85262ATT/AJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA85262ATT/AJ is usually 5 days.
3.What payment methods are accepted for PCA85262ATT/AJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA85262ATT/AJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA85262ATT/AJ?
PCA85262ATT/AJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA85262ATT/AJ 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 PCA85262ATT/AJ?
For technical support, including PCA85262ATT/AJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA85262ATT/AJ requirements.
6.How does Aetrix verify that PCA85262ATT/AJ is sourced from the original manufacturer or authorized distributors?
All PCA85262ATT/AJ 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 PCA85262ATT/AJ meets industry standards.
7.What is the process for return or replacement of PCA85262ATT/AJ?
All PCA85262ATT/AJ units undergo pre-shipment inspection (PSI). If there is an issue with PCA85262ATT/AJ, 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 PCA85262ATT/AJ part is unused and in its original packaging.
Return procedure for PCA85262ATT/AJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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