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NXP Semiconductors PCA85233UG/2DA/Q1Z
- Part No.:
- PCA85233UG/2DA/Q1Z
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- Die
- Datasheet:
-
PCA85233UG/2DA/Q1Z.pdf
- Description:
- IC DRVR 320 SEGMENT DIE
- Quantity:
- Payment:
- Shipping:
Inventory:1,840
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Product details
Overview
PCA85233UG/2DA/Q1Z 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 features I²C-bus (400 kHz), 80 × 4-bit display RAM, selectable frame frequency (150 Hz / 220 Hz), and internal LCD bias generation - enabling direct drive of instrument cluster displays and dashboard modules.
For engineers reviewing the PCA85233UG/2DA/Q1Z datasheet, PCA85233UG/2DA/Q1Z pinout, PCA85233UG/2DA/Q1Z application, or PCA85233UG/2DA/Q1Z equivalent, key selection criteria include its 1.8–5.5 V logic supply range, 2.5–8.0 V VLCD support, cascading capability for >320-segment systems, and static/2BP/3BP/4BP drive mode flexibility in automotive-grade packaging.
Technical Context
The PCA85233UG/2DA/Q1Z implements a dedicated LCD timing engine with internal oscillator (fosc = 3.6 kHz or 5.28 kHz) and frame frequency derivation (ffr = fclk/24). Its command decoder supports mode-set, load-data-pointer, device-select, bank-select, and blink-select operations over I²C, enabling full control of display RAM addressing, bank switching, and blinking behavior without host CPU overhead.
It integrates a fractional LCD bias generator with voltage-follower buffers, supporting static, 1/2-bias, and 1/3-bias configurations. The display RAM architecture maps 80 segment outputs (S0–S79) and 4 backplane outputs (BP0–BP3) to a 80 × 4-bit static RAM with auto-increment addressing, subaddressing, and dual-bank memory switching in static and duplex modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Display Capacity | Up to 4 backplanes × 80 segments = 320 total elements; supports 40×7-seg or 20×14-seg alphanumeric displays. |
| I²C Interface Speed | 400 kHz - enables low-overhead communication with standard microcontrollers without custom timing. |
| Frame Frequency | 150 Hz or 220 Hz (typical) - selected via FF pin; eliminates visible flicker in automotive cabin lighting conditions. |
| Logic Supply Range | 1.8 V to 5.5 V - compatible with 1.8 V, 3.3 V, and 5 V MCU domains without level-shifting. |
| LCD Supply Range | 2.5 V to 8.0 V - supports low-threshold guest-host and high-threshold twisted nematic LCDs. |
| Operating Temperature | −40 °C to +105 °C - meets AEC-Q100 Grade 2 requirements for under-hood and instrument panel use. |
| Display RAM | 80 × 4-bit static RAM with auto-increment addressing and hardware subaddressing - reduces I²C transaction count during updates. |
Pinout & Package
Bare die package (110 bumps) with backside laser marking; substrate tied to VSS. Requires mechanical mounting per NXP Figure 27 and electrical isolation of rear side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDAACK (1–3) | I²C acknowledge output | Open-drain signal confirming byte receipt; must be pulled up externally for bus operation. |
| SDA (4–6) | I²C serial data I/O | Bi-directional data line; shares bus with multiple devices using 7-bit slave address (SA0 configurable). |
| SCL (7–9) | I²C serial clock input | Master-generated clock; synchronizes all I²C transfers including command decoding and RAM writes. |
| CLK (10) | Clock I/O | Outputs internal oscillator signal when OSC = VSS; becomes external clock input when OSC = VDD. |
| VDD (11–13) | Logic supply | Power for digital core and I²C interface; decoupling required near die edge per layout guidelines. |
| SYNC (14) | Cascade synchronization | Enables timing alignment across daisy-chained PCA85233 devices; left open if unused. |
| OSC (15) | Oscillator select | Configures clock source: VSS enables internal oscillator; VDD enables external clock input on CLK pin. |
| FF (16) | Frame frequency select | Chooses 150 Hz (VDD) or 220 Hz (VSS); no effect in external clock mode but must not float. |
| A0, A1 (17–18) | Hardware subaddress inputs | Set 2-bit subaddress for cascaded addressing; matched against internal counter to enable RAM writes. |
| T1 (19) | Test pin | Must be tied to VSS in application mode; not used in functional operation. |
| SA0 (20) | Slave address bit | Configures LSB of 7-bit I²C address (0x70–0x73); allows up to four devices on same bus. |
| VSS (21–23) | Ground reference | Logic and analog ground; substrate connection point; requires low-impedance return path. |
| VLCD (24–26) | LCD supply input | High-voltage rail for LCD segment/backplane drive; independent of VDD; bypassed externally. |
| BP0–BP3 (27,28,109,110) | LCD backplane outputs | Four dedicated outputs supporting static, 2BP, 3BP, or 4BP multiplexing; driven by internal bias generator. |
| S0–S79 (29–108) | LCD segment outputs | 80 CMOS outputs driving LCD segments; each paired with BPn in time-multiplexed fashion per drive mode. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 2 compliant - validated for reliability in automotive environments up to +105 °C. |
| Cascadable architecture | SYNC pin and hardware subaddressing enable daisy-chaining up to 32 devices for 2560-segment displays. |
| Flexible drive configuration | Selectable static/2BP/3BP/4BP modes and 1/2 or 1/3 bias - matches diverse LCD panel specifications. |
| Low-power display control | No external components needed; internal bias generator and voltage followers eliminate discrete resistors/caps. |
| Independent power domains | VDD (1.8–5.5 V) and VLCD (2.5–8.0 V) supplies decoupled - simplifies power tree design in mixed-voltage systems. |
| Robust initialization protocol | Defined START-dummy-STOP sequence resets I²C interface post-power-up; avoids undefined bus states. |
Applications
| Automotive Instrument Clusters | Industrial Control Panels |
|---|---|
Use Scenario: Driving analog-style speedometer needles and digital trip/fuel readouts in vehicle dashboards. IC Role / Device Role / Timing Role: Primary LCD controller/driver handling segment timing, bias generation, and I²C command execution. Use Value: Enables single-chip replacement of legacy discrete driver solutions while meeting AEC-Q100 temperature and ESD requirements. |
Use Scenario: Displaying status indicators, setpoints, and alarm messages on factory HMIs with segmented LCDs. IC Role / Device Role / Timing Role: Standalone display interface between ARM Cortex-M MCU and 4-backplane industrial LCD module. Use Value: Reduces firmware overhead via auto-increment RAM addressing and eliminates external bias resistor networks. |
| Automotive HVAC Displays | Medical Device UIs |
Use Scenario: Rendering temperature, fan speed, and mode icons on compact automotive climate control panels. IC Role / Device Role / Timing Role: Segment driver managing 20×14-segment alphanumeric display with integrated blinking control. Use Value: Supports 220 Hz frame rate to prevent flicker under variable cabin lighting; VLCD range accommodates high-contrast TN panels. |
Use Scenario: Powering patient parameter readouts (SpO₂, pulse rate) on portable diagnostic equipment with low-threshold LCDs. IC Role / Device Role / Timing Role: Low-voltage LCD interface operating from 1.8 V logic supply and 2.5 V VLCD rail. Use Value: Meets medical safety standards via isolated substrate and no DC bias on LCD outputs during blanking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCF8576CT/1/2/3 | Same 80×4 architecture but lacks AEC-Q100 qualification; max TA = +85 °C; no SYNC pin for cascading. | Targeted at consumer/industrial LCDs only; unsuitable for automotive instrument clusters requiring Grade 2 temp range. | Choose PCF8576CT only for cost-sensitive non-automotive designs where extended temperature and cascade sync are unnecessary. |
| RAA229100 | Higher integration: includes boost converter for VLCD generation; supports up to 120 segments; SPI-only interface. | Designed for space-constrained applications needing integrated power; incompatible with I²C-based legacy MCU firmware. | Choose RAA229100 when VLCD generation must be on-chip and SPI is available; avoid if I²C bus footprint or existing firmware reuse is critical. |
Compared with PCF8576CT and RAA229100, the PCA85233UG/2DA/Q1Z uniquely combines AEC-Q100 compliance, I²C+SYNC cascading, and wide VLCD range - making it the only drop-in solution for automotive LCD modules requiring 4-backplane drive and 105 °C operation without redesigning power or communication layers.
Availability
PCA85233UG/2DA/Q1Z is available at Aetrix Electronics and suitable for automotive instrument clusters, HVAC control panels, industrial HMIs, and medical device displays requiring stable component supply across extended temperature and long product lifecycles.
Supply support for PCA85233UG/2DA/Q1Z 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 PCA85233UG/2DA/Q1Z belongs to NXP's automotive LCD driver product line, engineered specifically for reliable, low-power, and pin-efficient interfacing of microcontrollers to segmented LCDs in harsh-temperature vehicle environments.
FAQ
What is the maximum number of LCD segments the PCA85233UG/2DA/Q1Z can drive?
The PCA85233UG/2DA/Q1Z drives up to 80 segment outputs (S0–S79) and 4 backplane outputs (BP0–BP3), supporting a maximum of 320 total LCD elements (e.g., 40×7-segment characters or 20×14-segment characters). Cascading multiple PCA85233UG/2DA/Q1Z devices extends this to 2560 segments using the SYNC pin and hardware subaddressing.
Does the PCA85233UG/2DA/Q1Z require external components for LCD bias generation?
No. The PCA85233UG/2DA/Q1Z includes an internal fractional LCD bias generator with voltage-follower buffers, eliminating the need for external resistor dividers or op-amps. It supports static, 1/2-bias, and 1/3-bias configurations directly from VLCD and VSS rails, reducing BOM count and PCB area.
How is the frame frequency selected on the PCA85233UG/2DA/Q1Z?
The frame frequency of the PCA85233UG/2DA/Q1Z is selected via the FF pin: tying FF to VDD yields ~150 Hz, and tying FF to VSS yields ~220 Hz (typical). This selection sets the internal clock divisor and is active only when the internal oscillator is enabled (OSC = VSS); FF must not be left floating even in external clock mode.
Can the PCA85233UG/2DA/Q1Z operate with a 1.8 V logic supply?
Yes. The PCA85233UG/2DA/Q1Z supports a logic supply range of 1.8 V to 5.5 V on VDD, making it fully compatible with modern low-voltage microcontrollers. Its I²C interface operates correctly across this range, and all digital logic thresholds scale accordingly - verified per AEC-Q100 testing at 1.8 V min.
What is the purpose of the SYNC pin on the PCA85233UG/2DA/Q1Z?
The SYNC pin on the PCA85233UG/2DA/Q1Z provides cascade synchronization between multiple daisy-chained devices, ensuring precise timing alignment of frame starts and segment drive phases. When used, it prevents visual artifacts like tearing or misalignment in large multi-chip LCD systems - critical for automotive instrument clusters spanning multiple display zones.
PCA85233UG/2DA/Q1Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Active
- Display Type:
- LCD
- Configuration:
- 320 Segment
- Interface:
- I2C
- Digits or Characters:
- -
- Current - Supply:
- 22 µA
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
PCA85233UG/2DA/Q1Z FAQ
1.How can I place an order for PCA85233UG/2DA/Q1Z through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA85233UG/2DA/Q1Z 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 PCA85233UG/2DA/Q1Z reliable?
The price and inventory of PCA85233UG/2DA/Q1Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA85233UG/2DA/Q1Z is usually 5 days.
3.What payment methods are accepted for PCA85233UG/2DA/Q1Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA85233UG/2DA/Q1Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA85233UG/2DA/Q1Z?
PCA85233UG/2DA/Q1Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA85233UG/2DA/Q1Z 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 PCA85233UG/2DA/Q1Z?
For technical support, including PCA85233UG/2DA/Q1Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA85233UG/2DA/Q1Z requirements.
6.How does Aetrix verify that PCA85233UG/2DA/Q1Z is sourced from the original manufacturer or authorized distributors?
All PCA85233UG/2DA/Q1Z 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 PCA85233UG/2DA/Q1Z meets industry standards.
7.What is the process for return or replacement of PCA85233UG/2DA/Q1Z?
All PCA85233UG/2DA/Q1Z units undergo pre-shipment inspection (PSI). If there is an issue with PCA85233UG/2DA/Q1Z, 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 PCA85233UG/2DA/Q1Z part is unused and in its original packaging.
Return procedure for PCA85233UG/2DA/Q1Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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