My Inquiry
My Account
NXP Semiconductors PCF8566T/S480/1,11
- Part No.:
- PCF8566T/S480/1,11
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- 40-BSOP (0.295", 7.50mm Width)
- Datasheet:
-
PCF8566T/S480/1,11.pdf
- Description:
- IC DRVR 7 SEGMNT 12 DIGIT 40VSO
- Quantity:
- Payment:
- Shipping:
Inventory:4,194
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PCF8566T/S480/1,11 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 delivers I²C-bus interface, 24 × 4-bit display RAM, selectable 1/2 or 1/3 bias, and internal LCD bias generation - enabling direct drive of numeric, alphanumeric, or graphic LCDs in battery-powered instrumentation and telecom displays.
For engineers reviewing the PCF8566T/S480/1,11 datasheet, PCF8566T/S480/1,11 pinout, PCF8566T/S480/1,11 application, or PCF8566T/S480/1,11 equivalent, key selection criteria include I²C address configuration (SA0/A0–A2), 1:2–1:4 multiplex mode support, power-saving mode operation, VLCD/VDD supply separation, and cascading capability with PCF8576C for >96-element displays.
Technical Context
The PCF8566T/S480/1,11 implements a synchronous LCD drive architecture with an internal oscillator (enabled via OSC–VSS) or external clock input (OSC–VDD), generating frame frequencies of 69 Hz (normal mode) or 65 Hz (power-saving mode) at fclk = 200 kHz or 31 kHz respectively. Its timing engine coordinates segment/backplane waveform generation, subaddress-based RAM access, and auto-incremented data loading across cascaded devices.
Display control logic includes independent input/output bank selectors for static and duplex modes, hardware subaddressing (A0–A2 + SA0), and blinker circuitry supporting full-display or selective-segment blinking at programmable frequencies (e.g., 0.5–2 Hz). The device uses a 24 × 4-bit static RAM mapped directly to S0–S23 outputs and BP0–BP3 backplanes per multiplex configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Display Drive Capability | Up to 4 backplanes and 24 segments; supports static, 1:2, 1:3, or 1:4 multiplex LCDs |
| I²C Interface | Standard-mode (100 kHz) bidirectional bus; slave address set by SA0 and A0–A2 pins |
| Display Memory | 24 × 4-bit static RAM with auto-increment addressing and bank switching in static/duplex modes |
| LCD Bias Generation | Internal voltage divider provides 1/2 or 1/3 bias; VLCD pin enables external temperature compensation |
| Supply Range | VDD = 2.5 V to 6 V; VLCD and VDD may be independently supplied for optimized contrast control |
| Power-Saving Mode | Reduces clock frequency by factor of 6, lowering power dissipation while maintaining display retention |
| Cascading Support | Synchronous cascade via SYNC pin; compatible with PCF8576C for up to 1536 segments |
Pinout & Package
PCF8566T/S480/1,11 is housed in a plastic very small outline package (VSO40; SOT158-1) with 40 leads, optimized for plane wiring in single- and multi-device LCD applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA (1) | I²C-bus data line | Bidirectional open-drain interface requiring external pull-up; handles command/data transfer and ACK/NACK |
| SCL (2) | I²C-bus clock line | Input for master-generated clock; synchronizes all I²C transactions including RAM writes and mode commands |
| SYNC (3) | Cascade synchronization | Drives next device's SYNC input in daisy-chain configurations; ensures frame-aligned multiplex timing |
| CLK (4) | External clock input/output | Outputs internal oscillator signal when OSC = VSS; accepts external clock when OSC = VDD |
| VDD (5) | Logic supply | Primary power for digital core and I²C interface; range 2.5 V–6 V |
| OSC (6) | Oscillator select | Connect to VSS for internal oscillator; connect to VDD for external clock source |
| A0–A2 (7–9) | Hardware subaddress inputs | Set lower 3 bits of I²C subaddress; enable partial RAM access without software address calculation |
| SA0 (10) | Slave address bit 0 | Configures LSB of 7-bit I²C slave address (0x70–0x77); allows up to 8 devices on same bus |
| VSS (11) | Logic ground | Reference for digital logic and I²C signaling; separate from LCD ground path |
| VLCD (12) | LCD supply voltage | Provides bias reference for internal voltage divider; adjustable for contrast optimization and temperature compensation |
| BP0–BP3 (13–16) | LCD backplane outputs | Drive waveforms synchronized to segment outputs; configurable for 1:1–1:4 multiplex; parallelable for higher current |
| S0–S23 (17–40) | LCD segment outputs | Direct-drive outputs for up to 24 LCD segments; open-circuit unused pins; no external drivers required |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCD bias generator | Eliminates external resistive divider or dedicated bias IC; supports 1/2 and 1/3 bias via internal switchable resistor network |
| Auto-incremented RAM addressing | Reduces I²C transaction count during bulk display updates; pointer increments by 2–8 based on multiplex mode |
| Hardware subaddressing (A0–A2) | Enables partial RAM access without host CPU address arithmetic; critical for efficient cascaded system firmware |
| Display memory bank switching | Allows double-buffered updates in static and 1:2 modes; prevents visible flicker during full-screen refresh |
| Power-saving mode | Cuts dynamic power by ~83% via 6× clock reduction; maintains display state with no RAM refresh overhead |
Applications
| Portable Medical Instrumentation | Industrial Panel Meters |
|---|---|
Use Scenario: Battery-powered handheld blood glucose meters and pulse oximeters with 4-digit numeric LCDs. IC Role / Device Role / Timing Role: Primary LCD controller driving 4-backplane, 24-segment display using 1:4 multiplex mode and internal 1/3 bias. Use Value: Enables >500-hour battery life via power-saving mode and eliminates external bias components, reducing BOM cost and PCB area. | Use Scenario: DIN-rail mounted process controllers displaying real-time sensor values and status indicators. IC Role / Device Role / Timing Role: Central display driver interfacing to 14-segment alphanumeric LCD via I²C from ARM Cortex-M host MCU. Use Value: Hardware subaddressing (A0–A2) simplifies firmware handling of multi-digit displays; cascading support scales to 6-digit+ readouts without bus contention. |
| Telecom Handsets | Home Appliance Control Panels |
Use Scenario: Feature phone keypads with dual-line dot-matrix LCD showing caller ID and menu navigation. IC Role / Device Role / Timing Role: Static or 1:2 multiplex driver managing up to 96 display elements (4 × 24) with selective blinking for active call indicators. Use Value: Built-in blinker circuitry offloads MCU timer resources; VLCD/VDD separation allows independent contrast tuning across operating temperatures. | Use Scenario: Microwave oven and washing machine control panels with segmented icons and numeric timers. IC Role / Device Role / Timing Role: Low-cost display controller driving 7-segment digits and custom symbol segments using static or 1:3 multiplex mode. Use Value: No external components required - reduces assembly steps and field failure risk; 2.5 V minimum VDD supports wide-input DC-DC converter designs. |
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 16 backplanes; different I²C command set and RAM layout | Targeted for larger displays (>96 elements); requires redesign of display data mapping and initialization sequence | Choose for expansion beyond 24 segments; not drop-in - verify timing, bias, and cascade compatibility |
| HD44102 | Parallel interface (8-bit bus); no I²C; requires external bias network and oscillator | Legacy industrial systems with microcontroller parallel ports; higher component count and layout complexity | Prefer only if existing design uses parallel interface; adds 5+ passive components and increases board space |
Compared with PCF8566T/S480/1,11, PCF8576C offers higher segment count but demands firmware rework and lacks identical bias flexibility, while HD44102 increases BOM cost and layout effort due to external timing and bias components - making PCF8566T/S480/1,11 optimal for new I²C-based, low-component-count LCD designs.
Availability
PCF8566T/S480/1,11 is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial panel meters, and telecom handsets requiring stable component supply and long-term lifecycle support.
Supply support for PCF8566T/S480/1,11 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in interface, power management, and display technologies.
The PCF8566 product line was engineered for cost-sensitive, battery-operated LCD applications requiring minimal external components, I²C simplicity, and flexible multiplex support - targeting instrumentation, telecom, and home appliance markets.
FAQ
What LCD configurations does the PCF8566T/S480/1,11 support?
The PCF8566T/S480/1,11 supports static (1 backplane), 1:2, 1:3, and 1:4 multiplex LCDs with up to 4 backplanes and 24 segments. It drives up to twelve 7-segment numeric characters, six 14-segment alphanumeric characters, or any 96-element graphic layout. Configuration is selected via mode-set commands and bias settings - all implemented without external components. The PCF8566T/S480/1,11 datasheet specifies exact segment/backplane mappings for each mode in Table 4.
How does the PCF8566T/S480/1,11 handle I²C addressing in multi-device systems?
The PCF8566T/S480/1,11 uses a 7-bit I²C slave address where bits [6:3] are fixed (0x7), bit [2] is set by SA0, and bits [1:0] are set by A0 and A1 - allowing up to 8 unique addresses (0x70–0x77) on one bus. A2 enables hardware subaddressing for partial RAM access within a device. This scheme lets multiple PCF8566T/S480/1,11 units share the same bus while supporting cascaded display expansion via SYNC pin synchronization.
Can the PCF8566T/S480/1,11 operate with separate logic and LCD supplies?
Yes, the PCF8566T/S480/1,11 supports independent VDD (2.5 V–6 V) and VLCD supplies. VDD powers the digital core and I²C interface, while VLCD sets the LCD bias reference and connects to the internal voltage divider. This separation enables precise contrast control, temperature compensation via VLCD adjustment, and robust operation across varying battery voltages - a key advantage in portable designs using the PCF8566T/S480/1,11.
What is the function of the SYNC pin on the PCF8566T/S480/1,11?
The SYNC pin on the PCF8566T/S480/1,11 provides synchronous cascade timing between multiple devices. In daisy-chain configurations, the SYNC output of one PCF8566T/S480/1,11 drives the SYNC input of the next, ensuring frame-aligned multiplex sequencing across all units. This eliminates display skew or tearing in large LCDs built from multiple PCF8566T/S480/1,11 drivers - critical for reliable operation in industrial panel meters and telecom handsets using the PCF8566T/S480/1,11.
Does the PCF8566T/S480/1,11 include power-saving features for battery applications?
Yes, the PCF8566T/S480/1,11 includes a dedicated power-saving mode that reduces the internal clock frequency by a factor of six, cutting dynamic power consumption significantly while retaining display content. Frame frequency drops from 69 Hz to 65 Hz, and the reduced clock rate lowers I²C transaction speed - but no data loss occurs due to SCL stretching. This feature makes the PCF8566T/S480/1,11 ideal for battery-operated devices like portable medical instruments and telecom handsets.
PCF8566T/S480/1,11 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
PCF8566T/S480/1,11 FAQ
1.How can I place an order for PCF8566T/S480/1,11 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCF8566T/S480/1,11 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 PCF8566T/S480/1,11 reliable?
The price and inventory of PCF8566T/S480/1,11 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCF8566T/S480/1,11 is usually 5 days.
3.What payment methods are accepted for PCF8566T/S480/1,11?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCF8566T/S480/1,11 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCF8566T/S480/1,11?
PCF8566T/S480/1,11 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCF8566T/S480/1,11 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 PCF8566T/S480/1,11?
For technical support, including PCF8566T/S480/1,11 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCF8566T/S480/1,11 requirements.
6.How does Aetrix verify that PCF8566T/S480/1,11 is sourced from the original manufacturer or authorized distributors?
All PCF8566T/S480/1,11 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 PCF8566T/S480/1,11 meets industry standards.
7.What is the process for return or replacement of PCF8566T/S480/1,11?
All PCF8566T/S480/1,11 units undergo pre-shipment inspection (PSI). If there is an issue with PCF8566T/S480/1,11, 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 PCF8566T/S480/1,11 part is unused and in its original packaging.
Return procedure for PCF8566T/S480/1,11:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCF8566T/S480/1,11 Tags
-
PCA8561AHN/AY
NXP Semiconductors
-
SN74LS47N
Texas Instruments
-
PCF85176T/1Y
NXP Semiconductors
-
PCF85176H/1,518
NXP Semiconductors
-
BU9796AMUV-E2
Rohm Semiconductor
-
PCA85176H/Q900/1,5
NXP Semiconductors
-
PCF8537AH/1,518
NXP Semiconductors
-
LM3914VX/NOPB
Texas Instruments
-
PCF85134HL/1,118
NXP Semiconductors
-
AS1115-BSST
ams-OSRAM USA INC.
-
PCA8534AH/Q900/1,5
NXP Semiconductors
-
LM3914V/NOPB
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
