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NXP Semiconductors PCF8566TS/1,118
- Part No.:
- PCF8566TS/1,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- 40-BSOP (0.295", 7.50mm Width)
- Datasheet:
-
PCF8566TS/1,118.pdf
- Description:
- IC DRVR 7 SEGMNT 12 DIGIT 40VSO
- Quantity:
- Payment:
- Shipping:
Inventory:1,026
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Product details
Overview
PCF8566TS/1,118 from NXP Semiconductors is a single-chip LCD controller/driver IC designed for static or low-multiplex-rate LCDs with up to 4 backplanes and 24 segments. It supports I²C-bus interface (up to 100 kHz), internal/external clock selection, and programmable bias (1/2 or 1/3) and drive mode (static, 1:2, 1:3, 1:4). It is used in battery-powered instrumentation displays, telephony handsets, and portable meters requiring low-power segment control.
For engineers reviewing the PCF8566TS/1,118 datasheet, PCF8566TS/1,118 pinout, PCF8566TS/1,118 application, or PCF8566TS/1,118 equivalent, this device delivers verified 24×4-bit display RAM, auto-incremented I²C loading across subaddress boundaries, hardware bank switching for static/duplex modes, integrated LCD bias generation, and cascading support for up to 1536 segments via SYNC signal.
Technical Context
The PCF8566TS/1,118 implements a synchronous LCD drive architecture with an internal oscillator (enabled by OSC→VSS) or external clock input (OSC→VDD), generating frame frequencies of 69 Hz (normal) or 65 Hz (power-saving mode). Its timing engine coordinates multiplexed backplane outputs (BP0–BP3) and segment drivers (S0–S23) using a 24×4-bit static RAM, data pointer, and subaddress counter for boundary-aware cascading.
Display data routing is managed by dual bank selectors: the output bank selector chooses RAM bits per multiplex phase (bit 0 only in static mode; bits 0–3 sequentially in 1:4 mode), while the input bank selector enables alternate RAM bank writes-supporting flicker-free display updates in static and 1:2 modes without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LCD Drive Capability | Up to 4 backplanes × 24 segments; supports static, 1:2, 1:3, and 1:4 multiplex configurations |
| I²C Interface Speed | Up to 100 kHz; requires fCLK ≥ 125 kHz for full-speed operation |
| Display Memory | 24 × 4-bit static RAM; direct mapping between RAM addresses and segment/backplane outputs |
| Bias Configuration | Selectable 1/2 or 1/3 bias; internal voltage divider eliminates need for external bias network |
| Power Supply Range | 2.5 V to 6.0 V; separate logic (VDD/VSS) and LCD (VLCD) supplies enable optimized contrast tuning |
| Power-Saving Mode | Reduces clock division ratio by 6×, lowering power dissipation significantly in battery-operated applications |
| Blinking Control | Full-display blink at 0.5 Hz / 1 Hz / 2 Hz; segment-selective blink via RAM bank swapping in static/1:2 modes |
Pinout & Package
PCF8566TS/1,118 is housed in a 40-lead plastic very small outline package (VSO40; SOT158-1), optimized for plane wiring in single- and multi-device LCD systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA (1) | I²C-bus data line | Bidirectional open-drain interface; requires external pull-up resistor for communication |
| SCL (2) | I²C-bus clock line | Input/output synchronized with host; defines bit transfer timing on SDA |
| SYNC (3) | Cascade synchronization | Propagates timing alignment across multiple PCF8566 devices in large-panel systems |
| CLK (4) | External clock input/output | Drives cascaded devices when OSC = VSS; accepts external clock when OSC = VDD |
| VDD (5) | Positive logic supply | 2.5–6.0 V; powers internal logic and oscillator; substrate tied internally |
| OSC (6) | Oscillator select | Connect to VSS for internal oscillator; connect to VDD for external clock source |
| A0–A2 (7–9) | I²C subaddress inputs | Hardware-selectable 3-bit subaddress for multi-device I²C addressing within same bus |
| SA0 (10) | Slave address bit 0 | Configures LSB of 7-bit I²C slave address (0x70–0x77 range) |
| VSS (11) | Logic ground | Reference for digital circuitry; must be connected to system ground |
| VLCD (12) | LCD supply voltage | Adjustable bias reference; sets full-scale LCD voltage (Voper = VDD − VLCD) |
| BP0–BP3 (13–16) | LCD backplane outputs | Driven in phase-aligned patterns per selected multiplex mode; unused pins may be left open |
| S0–S23 (17–40) | LCD segment outputs | Direct-drive outputs; each corresponds to one LCD segment; unused outputs left open-circuit |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCD bias generator | Eliminates external resistive divider; supports 1/2 and 1/3 bias via internal switchable resistor network |
| Auto-incremented RAM addressing | Data pointer advances by 2 (1:4), 3 (1:3), 4 (1:2), or 8 (static) per byte-enabling seamless multi-byte writes across subaddress boundaries |
| Display memory bank switching | Enables double-buffered updates in static and 1:2 modes: prepare new content in alternate RAM bank, then swap instantly without flicker |
| Cascadable architecture | SYNC signal ensures synchronized frame timing across up to 1536-segment systems; compatible with PCF8576C for extended segment count |
| Low-power operation | Power-saving mode reduces clock frequency by 6×, cutting dynamic power consumption while maintaining display integrity |
Applications
| Portable Instrumentation Displays | Telephony Handset LCDs |
|---|---|
Use Scenario: Digital multimeters, temperature loggers, and handheld test equipment with segmented numeric/alphanumeric LCDs. IC Role / Device Role / Timing Role: Primary LCD controller/driver; manages segment activation, backplane timing, and bias voltage generation independent of host MCU. Use Value: Reduces BOM count by integrating bias generation and RAM; supports 12-digit 7-segment or 6-character 14-segment layouts with no external components. |
Use Scenario: Feature-rich cordless phone handsets requiring low-power, high-contrast LCDs with blinking indicators and status icons. IC Role / Device Role / Timing Role: Dedicated display peripheral handling all LCD timing, multiplex sequencing, and blink control-freeing MCU resources. Use Value: Enables selective blinking of call-waiting or message indicators via RAM bank swap, eliminating software polling or timer interrupts. |
| Industrial Panel Meters | Home Appliance Control Panels |
Use Scenario: DIN-rail mounted energy meters and process controllers with 4-backplane, 96-element dot-matrix or custom symbol displays. IC Role / Device Role / Timing Role: High-reliability LCD driver supporting 1:4 multiplex mode with 1/3 bias for optimal contrast and lifetime under continuous operation. Use Value: Internal voltage selector and discrimination ratio optimization (D = 1.732 @ 1:4/1/3) ensure stable readability across temperature and aging. |
Use Scenario: Microwave ovens, washing machines, and HVAC thermostats with segmented displays showing time, temperature, and cycle status. IC Role / Device Role / Timing Role: Low-voltage (2.5 V) compatible driver enabling direct integration with 3.3 V MCU systems and battery backup operation. Use Value: Power-saving mode extends backup battery life during mains failure; I²C interface simplifies connection to existing appliance MCU buses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD controller/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCF8576C | 40-segment driver; supports up to 160 segments in cascade; lacks static drive mode and 1:3 multiplex | Better suited for larger alphanumeric displays (e.g., 16×2 character LCDs); not suitable for static or 1:3-only panels | Select PCF8576C when >24 segments required and 1:4 multiplex dominates; verify compatibility with existing PCF8566TS/1,118 layout due to different pinout |
| HD44102 | Parallel interface (8-bit bus); no I²C support; requires external bias network and clock source | Used in legacy industrial designs with parallel MCU interfaces; higher component count and PCB area | Choose HD44102 only for backward-compatible upgrades where I²C is unavailable; expect added design effort for bias generation and timing control |
Compared with PCF8566TS/1,118, the PCF8576C offers higher segment capacity but sacrifices static drive flexibility and I²C simplicity, while the HD44102 demands external timing and bias components-making PCF8566TS/1,118 the optimal choice for compact, low-power, I²C-based segmented LCD systems.
Availability
PCF8566TS/1,118 is available at Aetrix Electronics and suitable for portable instrumentation displays, telephony handset LCDs, and industrial panel meters requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for PCF8566TS/1,118 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 specializing in secure connectivity solutions, automotive MCUs, and analog/power management ICs with strong heritage in human-machine interface peripherals.
The PCF8566TS/1,118 belongs to NXP's universal LCD driver product line, engineered specifically for low-multiplex-rate segment-based displays in battery-constrained and cost-sensitive consumer and industrial applications.
FAQ
What is the maximum number of LCD segments supported by the PCF8566TS/1,118 in a single device?
The PCF8566TS/1,118 directly drives up to 24 segments and 4 backplanes, enabling configurations such as 12 seven-segment digits, 6 fourteen-segment characters, or 96-dot graphic elements. When cascaded using the SYNC pin, multiple PCF8566TS/1,118 devices can collectively drive up to 1536 segments-verified in NXP's application notes for large-panel implementations.
Does the PCF8566TS/1,118 require external components for LCD bias generation?
No, the PCF8566TS/1,118 includes an integrated LCD bias generator with a switchable internal resistor network that provides precise 1/2 or 1/3 bias voltages-eliminating the need for external resistors or dedicated bias ICs. Only VDD, VSS, and VLCD connections are required to complete the bias path, reducing BOM count and layout complexity.
How does the PCF8566TS/1,118 handle display data loading across multiple devices in cascade mode?
The PCF8566TS/1,118 uses hardware subaddressing (A0–A2 pins) and auto-incremented addressing to enable seamless multi-device data loading. When the display RAM address overflows, the subaddress counter increments and wraps to the next device-allowing uninterrupted transmission of display bytes across cascaded PCF8566TS/1,118 units without host intervention or frame synchronization overhead.
Can the PCF8566TS/1,118 drive a static LCD with only one backplane?
Yes, the PCF8566TS/1,118 fully supports static drive mode using a single backplane (BP0). In this configuration, all four backplane outputs (BP0–BP3) carry identical signals and may be paralleled for enhanced drive strength. The device defaults to static mode at power-on and supports direct 24-segment static driving with 1/2 or 1/3 bias selection.
What is the role of the SYNC pin on the PCF8566TS/1,118?
The SYNC pin on the PCF8566TS/1,118 provides hardware-level synchronization between cascaded devices, ensuring aligned LCD frame timing across the entire chain. It propagates the internal frame timing signal from master to slave PCF8566TS/1,118 units-critical for avoiding visual artifacts like tearing or misalignment in large multi-chip LCD panels.
PCF8566TS/1,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 40-BSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Display Type:
- LCD
- Configuration:
- 7 Segment + DP, 14 Segment (24 Segment)
- Interface:
- I2C
- Digits or Characters:
- 6 Characters, 12 Digits, 96 Elements
- Current - Supply:
- 30 µA
- Voltage - Supply:
- 2.5V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VSO
PCF8566TS/1,118 FAQ
1.How can I place an order for PCF8566TS/1,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCF8566TS/1,118 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 PCF8566TS/1,118 reliable?
The price and inventory of PCF8566TS/1,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCF8566TS/1,118 is usually 5 days.
3.What payment methods are accepted for PCF8566TS/1,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCF8566TS/1,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCF8566TS/1,118?
PCF8566TS/1,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCF8566TS/1,118 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 PCF8566TS/1,118?
For technical support, including PCF8566TS/1,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCF8566TS/1,118 requirements.
6.How does Aetrix verify that PCF8566TS/1,118 is sourced from the original manufacturer or authorized distributors?
All PCF8566TS/1,118 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 PCF8566TS/1,118 meets industry standards.
7.What is the process for return or replacement of PCF8566TS/1,118?
All PCF8566TS/1,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCF8566TS/1,118, 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 PCF8566TS/1,118 part is unused and in its original packaging.
Return procedure for PCF8566TS/1,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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