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NXP Semiconductors PCE85176AUG/DAKP
- Part No.:
- PCE85176AUG/DAKP
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- Die
- Datasheet:
-
PCE85176AUG/DAKP.pdf
- Description:
- IC DRVR 160 SEGMENT DIE
- Quantity:
- Payment:
- Shipping:
Inventory:3,282
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Product details
Overview
PCE85176AUG from NXP Semiconductors is a 4 × 40 LCD segment driver IC designed for Chip-On-Glass (COG) displays, supporting static and multiplexed drive modes up to 4 backplanes and 40 segments. It integrates display RAM (40 × 4-bit), internal LCD bias generation, and I²C-bus interface (400 kHz) for microcontroller-based embedded instrumentation and industrial panel meters.
For engineers reviewing the PCE85176AUG datasheet, PCE85176AUG pinout, PCE85176AUG application, or PCE85176AUG equivalent, key selection criteria include its 1.8 V–5.5 V logic supply range, selectable 1/2 or 1/3 LCD bias, bank-switching capability in static and 1:2 multiplex modes, and compatibility with low-threshold (2.5 V) and high-threshold (5.5 V) LCD panels.
Technical Context
The PCE85176AUG implements a dual-path timing architecture: internal oscillator (enabled via OSC–VSS) or external clock (via CLK with OSC–VDD), with frame frequency derived as fclk/24. Its display controller supports four drive modes-static, 1:2, 1:3, and 1:4 multiplex-each with distinct RAM addressing increments (8, 4, 3, or 2 bytes per write).
RAM bank switching operates independently for input and output paths using the bank-select command, enabling double-buffered updates in static and 1:2 modes. Blink control is implemented either via alternate RAM bank swapping (static/1:2) or dynamic RAM data toggling (1:3/1:4), with blink frequencies fixed at fclk/768, /1536, or /3072.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Display Drive Capability | Up to 4 backplanes × 40 segments; supports static, 1:2, 1:3, and 1:4 multiplex configurations |
| I²C Interface Speed | 400 kHz maximum; bidirectional two-wire bus compatible with standard and fast-mode controllers |
| Display RAM | 40 × 4-bit static RAM with auto-increment addressing; one-to-one mapping between RAM bits and LCD elements |
| LCD Supply Range (VLCD) | 2.5 V to 5.5 V; supports both low-threshold and high-threshold twisted nematic LCDs |
| Logic Supply Range (VDD) | 1.8 V to 5.5 V; enables direct interfacing with 1.8 V, 3.3 V, and 5 V microcontrollers |
| Bias Configuration | Selectable 1/2 or 1/3 bias via mode-set command; internal voltage-follower buffers eliminate external components |
| Blink Modes | Normal blinking (entire display) or alternate RAM bank blinking; three programmable frequencies plus off state |
Pinout & Package
Bare die package with 59 gold bumps; intended for Chip-On-Glass (COG) mounting. Pin numbering follows active-side view per Figure 2 of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA (pins 1, 58, 59) | I²C serial data line | Open-drain bidirectional interface; requires external pull-up; supports multi-master arbitration |
| SCL (pins 2, 3) | I²C serial clock input | Master-generated clock; synchronizes all data transfers and command decoding |
| SA0 (pin 11) | I²C address select | Configures LSB of 7-bit slave address (0x70 or 0x71); enables dual-device addressing on same bus |
| BP0–BP3 (pins 14–17) | LCD backplane outputs | Active outputs for multiplexed LCD drive; BP0 used in all modes; BP1–BP3 enabled per M[1:0] setting |
| S0–S39 (pins 18–57) | LCD segment outputs | 40 dedicated segment drivers; each maps directly to one column of display RAM |
| VDD (pin 6), VSS (pin 12), VLCD (pin 13) | Power supplies | Separate logic (VDD/VSS) and LCD (VLCD) rails enable independent voltage optimization and noise isolation |
| OSC (pin 7), CLK (pin 5) | Clock source selection | OSC tied to VSS enables internal oscillator; OSC tied to VDD enables external clock on CLK pin |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCD bias generator | Internal 3-impedance voltage divider with switchable bypass for 1/2 bias; eliminates external resistors and capacitors |
| Display RAM bank switching | Independent input/output bank selection in static and 1:2 modes enables flicker-free display updates without CPU intervention |
| Versatile blink control | Hardware-managed blinking at three frequencies (fclk/768, /1536, /3072) with normal or alternate-RAM modes; no firmware overhead |
| COG-optimized packaging | Bare die with 59 gold bumps designed for direct bonding to glass substrates; reduces interconnect parasitics and board space |
| No external components required | Full functionality achieved with only VDD, VSS, VLCD, SDA, SCL, SA0, and OSC/CLK connections; no timing crystals or bias networks needed |
Applications
| Industrial Panel Meters | Medical Device Displays |
|---|---|
Use Scenario: Digital front-panel display in DIN-rail mounted power analyzers and multimeters requiring stable segment illumination under variable ambient light. IC Role / Device Role / Timing Role: Primary LCD segment driver; generates time-multiplexed backplane and segment waveforms synchronized to internal oscillator or system clock. Use Value: Enables 20-character alphanumeric readouts with configurable contrast via VLCD adjustment and 1/3 bias for 4-backplane displays, reducing BOM count by eliminating discrete bias circuitry. |
Use Scenario: Low-power patient monitor status display with intermittent alert blinking and long-term reliability requirements. IC Role / Device Role / Timing Role: Dedicated COG display controller; manages dual-bank RAM updates to prevent visual artifacts during parameter refresh cycles. Use Value: Hardware blink engine delivers consistent 2 Hz or 4 Hz alert indication without CPU polling, extending battery life in portable medical instruments. |
| Home Appliance Control Panels | Automotive Instrument Clusters |
Use Scenario: Oven, washing machine, or HVAC control panel with segmented numeric and icon-based feedback. IC Role / Device Role / Timing Role: Segment driver interfacing to 14-segment alphanumeric LCDs; handles 1:2 multiplex mode with 10-character capacity. Use Value: Wide 1.8–5.5 V VDD range allows direct connection to appliance mainboard's 3.3 V rail; VLCD adjustable to 5.5 V ensures visibility in bright kitchen environments. |
Use Scenario: Secondary instrument cluster display in entry-level vehicles using cost-optimized COG LCD modules. IC Role / Device Role / Timing Role: COG-integrated LCD driver; provides static or 1:2 drive for speedometer/tachometer bar graphs and warning icons. Use Value: Gold bump bare die enables ultra-thin module assembly; independent VLCD/VDD rails simplify EMC filtering and reduce conducted emissions into vehicle CAN networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD segment driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCF8576CT/1/2 | 40 × 4-bit RAM, 1:4 max multiplex, 2.5–6.0 V VLCD, but requires external bias resistor network | Lacks integrated bias generator; needs additional components for 1/2 or 1/3 bias configuration | Choose when legacy PCB layout accommodates external bias resistors and lower cost outweighs component count reduction |
| MAX6955 | 40-segment driver with 16-segment alphanumeric font ROM, 2.7–5.5 V operation, but no bank switching or COG-optimized packaging | Includes built-in character mapping; targets LED-style alphanumeric displays rather than raw segment control | Prefer when application requires glyph-based rendering instead of direct segment bit manipulation and COG integration is not required |
Compared with PCF8576CT/1/2, PCE85176AUG eliminates external bias components and supports COG assembly; versus MAX6955, it offers true segment-level control and hardware bank switching for deterministic update timing-critical for flicker-free industrial HMI.
Availability
PCE85176AUG is available at Aetrix Electronics and suitable for industrial panel meters, medical device displays, home appliance control panels, and automotive instrument clusters requiring stable component supply across extended production lifecycles.
Supply support for PCE85176AUG 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The PCE85176AUG belongs to NXP's legacy LCD controller and driver product line, engineered specifically for Chip-On-Glass integration in cost-sensitive, space-constrained embedded displays requiring high reliability and minimal external components.
FAQ
What is the primary function of the PCE85176AUG in an LCD system?
The PCE85176AUG serves as a complete 4 × 40 LCD segment driver IC that interfaces microcontrollers to static or multiplexed LCD panels via I²C. It generates precise backplane and segment waveforms, manages 40 × 4-bit display RAM, provides internal LCD bias, and supports COG assembly. The PCE85176AUG eliminates need for external timing or bias components while enabling flicker-free updates through hardware bank switching.
Does the PCE85176AUG require external components to operate?
No, the PCE85176AUG requires no external components for core operation. Its internal oscillator (enabled by OSC–VSS), voltage-follower LCD bias generator, and 40 × 4-bit RAM eliminate need for crystals, resistors, or capacitors typically associated with LCD drivers. Only essential connections-VDD, VSS, VLCD, SDA, SCL, SA0, and OSC/CLK-are needed to drive compliant LCD panels.
How does the PCE85176AUG handle display memory updates without visible flicker?
The PCE85176AUG uses independent input and output RAM bank selection in static and 1:2 multiplex modes. While new data is written to one bank (e.g., rows 2–3), the display continues scanning from the other (e.g., rows 0–1). A single bank-select command switches output source instantly-enabling atomic display updates. This hardware-managed double buffering prevents partial-frame artifacts during refresh, a key advantage of the PCE85176AUG over software-timed alternatives.
What LCD bias configurations does the PCE85176AUG support, and how are they selected?
The PCE85176AUG supports 1/2 bias for 1:2 multiplex and 1/3 bias for static, 1:3, and 1:4 modes, selected via the B bit in the mode-set command. Bias voltages are generated internally using a 3-impedance divider between VLCD and VSS, with automatic bypass switching for 1/2 bias. This eliminates external resistor networks and allows VLCD to be set from 2.5 V to 5.5 V depending on LCD threshold voltage-ensuring optimal contrast across diverse panel types.
Can the PCE85176AUG drive both alphanumeric and custom graphic LCDs?
Yes, the PCE85176AUG drives any static or multiplexed LCD with up to 4 backplanes and 40 segments-including 20×7-segment, 10×14-segment, or 160-element graphic displays. Its 40 × 4-bit RAM provides direct bit-to-element mapping: each RAM bit controls one LCD element (on/off), enabling full flexibility for alphanumeric characters, icons, bar graphs, or arbitrary pixel patterns without font ROM limitations. This makes the PCE85176AUG suitable for both standardized and custom COG LCD designs.
PCE85176AUG/DAKP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Active
- Display Type:
- LCD
- Configuration:
- 160 Segment
- Interface:
- I2C
- Digits or Characters:
- 10 Characters, 20 Characters, 160 Elements
- Current - Supply:
- 2.7 µA
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
PCE85176AUG/DAKP FAQ
1.How can I place an order for PCE85176AUG/DAKP through Aetrix?
Please submit a Request for Quotation (RFQ) for PCE85176AUG/DAKP 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 PCE85176AUG/DAKP reliable?
The price and inventory of PCE85176AUG/DAKP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCE85176AUG/DAKP is usually 5 days.
3.What payment methods are accepted for PCE85176AUG/DAKP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCE85176AUG/DAKP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCE85176AUG/DAKP?
PCE85176AUG/DAKP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCE85176AUG/DAKP 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 PCE85176AUG/DAKP?
For technical support, including PCE85176AUG/DAKP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCE85176AUG/DAKP requirements.
6.How does Aetrix verify that PCE85176AUG/DAKP is sourced from the original manufacturer or authorized distributors?
All PCE85176AUG/DAKP 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 PCE85176AUG/DAKP meets industry standards.
7.What is the process for return or replacement of PCE85176AUG/DAKP?
All PCE85176AUG/DAKP units undergo pre-shipment inspection (PSI). If there is an issue with PCE85176AUG/DAKP, 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 PCE85176AUG/DAKP part is unused and in its original packaging.
Return procedure for PCE85176AUG/DAKP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCE85176AUG/DAKP Tags
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