My Inquiry
My Account
NXP Semiconductors PCF8566T/1,118
- Part No.:
- PCF8566T/1,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- 40-BSOP (0.295", 7.50mm Width)
- Datasheet:
-
PCF8566T/1,118.pdf
- Description:
- IC DRVR 7 SEGMNT 12 DIGIT 40VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,908
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PCF8566T/1,118 from NXP Semiconductors is a single-chip LCD controller/driver IC for static and low-multiplex-rate LCDs, supporting up to 4 backplanes and 24 segments (96 total display elements), with I²C-bus interface, internal bias generation, and 24 × 4-bit display RAM. It drives numeric (12×7-segment), alphanumeric (6×14-segment), or custom graphics in battery-powered meters and industrial HMI panels.
For engineers reviewing the PCF8566T/1,118 datasheet, PCF8566T/1,118 pinout, PCF8566T/1,118 application, or PCF8566T/1,118 equivalent, this page delivers verified drive modes (1:4 multiplex, 1/3 bias), power range (2.5–6 V), frame frequency (69 Hz normal mode), I²C address configuration (SA0 + A0–A2), and cascade timing via SYNC/CLK - all confirmed for the VSO40-packaged PCF8566T variant.
Technical Context
The PCF8566T/1,118 implements a dedicated LCD drive architecture with hardware subaddressing (A0–A2 + SA0), auto-incremented RAM addressing per drive mode, and dual bank switching for static and duplex modes. Its internal voltage-follower LCD bias generator eliminates external resistors, while the oscillator selector (OSC pin) enables either internal RC or external clock operation at ≥125 kHz for full 100 kHz I²C compliance.
Timing is synchronized across cascaded devices using the bidirectional SYNC signal, and the display RAM (24 × 4 bits) maps directly to segment outputs S0–S23 and backplane outputs BP0–BP3. Frame frequency derivation (ffr = fclk/2880 in normal mode) and blink rate control (e.g., 2 Hz nominal) are fully hardware-managed without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Display Capacity | Up to 4 backplanes × 24 segments = 96 elements; supports 12×7-seg numeric or 6×14-seg alphanumeric displays |
| Drive Modes | Static, 1:2, 1:3, or 1:4 multiplex; selectable 1/2 or 1/3 bias configuration per mode |
| Power Supply | 2.5 V to 6 V logic supply (VDD); separate VLCD pin enables independent LCD bias control |
| I²C Interface | Standard-mode (100 kHz) compatible; slave address set by SA0 + A0–A2 (3-bit subaddress) |
| Frame Frequency | 69 Hz in normal mode (fclk = 200 kHz); 65 Hz in power-saving mode (fclk = 31 kHz) |
| Memory | 24 × 4-bit static display RAM with auto-increment addressing and bank-switching capability |
| Operating Temp | −40 °C to +85 °C - qualified for industrial metering and embedded HMI applications |
Pinout & Package
PCF8566T/1,118 is supplied in a 40-lead plastic very small outline package (VSO40; SOT158-1), optimized for plane wiring in multi-device LCD systems. Pin functions are validated per NXP datasheet Rev. 07 (2009).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDA (1) | I²C data bidirectional line | Open-drain interface requiring external pull-up; handles command/data transfer and ACK/NACK |
| SCL (2) | I²C clock input/output | Master-generated clock synchronizing all I²C transactions; must be pulled up externally |
| SYNC (3) | Cascade synchronization I/O | Propagates timing between daisy-chained PCF8566T devices; ensures frame alignment |
| CLK (4) | External clock input or internal clock output | Driven by external source when OSC = VDD; outputs internal oscillator signal when OSC = VSS |
| VDD (5) | Positive logic supply | 2.5–6 V digital core supply; substrate tied internally but not electrically connected |
| OSC (6) | Oscillator mode select | Connect to VSS for internal RC oscillator; connect to VDD to enable external clock on CLK pin |
| A0–A2 (7–9) | I²C subaddress inputs | Set lower 3 bits of device subaddress; used with SA0 for multi-device I²C bus addressing |
| SA0 (10) | I²C slave address bit 0 | Combines with A0–A2 to define full 7-bit I²C address; enables up to 8 devices on same bus |
| VSS (11) | Logic ground reference | Common return for digital circuitry; separate from LCD bias ground path |
| VLCD (12) | LCD supply voltage input | Accepts externally regulated voltage; internal divider generates 1/2 or 1/3 bias for multiplex modes |
| BP0–BP3 (13–16) | LCD backplane outputs | Drive up to 4 backplanes; in 1:4 mode, each carries unique phase; in static mode, all identical |
| S0–S23 (17–40) | LCD segment outputs | Direct-drive outputs for up to 24 segments; unused pins may be left open-circuit |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCD bias generation | Eliminates external resistor networks; supports 1/2 and 1/3 bias via internal voltage-follower and switchable divider |
| Hardware subaddressing & auto-increment | Reduces I²C transaction overhead: display data loads across RAM boundaries without host address management |
| Display memory bank switching | Enables flicker-free updates in static and 1:2 modes by preloading alternate RAM banks before switching |
| Cascadable architecture | SYNC and CLK signals allow synchronous chaining of multiple PCF8566T devices for >96-element displays |
| Low-power operation | Power-saving mode reduces clock frequency by 6×, cutting dynamic power consumption significantly for battery use |
Applications
| Energy Meter Display | Industrial Panel Meter |
|---|---|
Use Scenario: Driving 6-digit 7-segment LCD in DIN-rail mounted electricity meters with tamper-resistant glass front. IC Role / Device Role / Timing Role: Primary LCD controller/driver; manages segment/backplane timing, bias, and I²C command parsing without MCU intervention. Use Value: Enables direct MCU-to-LCD interface with only two wires; internal bias and 24×4 RAM reduce BOM count and layout area by eliminating external components. | Use Scenario: Displaying process variables (pressure, temperature, flow) on sealed front-panel LCDs in factory automation cabinets. IC Role / Device Role / Timing Role: Standalone LCD driver handling multiplexed 4-backplane graphic segments; synchronized via SYNC in multi-PCF8566T configurations. Use Value: Supports 1:4 multiplex with 1/3 bias for high-contrast readability under variable ambient light; operates reliably from 2.5 V to 6 V across wide industrial supply ranges. |
| Portable Medical Device | Telecom Handset Display |
Use Scenario: Driving low-power alphanumeric LCD in handheld blood glucose monitors with coin-cell battery life targets >2 years. IC Role / Device Role / Timing Role: LCD driver in ultra-low-power subsystem; enters power-saving mode during display idle periods. Use Value: Reduces system current draw by 6× during inactive frames; internal oscillator eliminates need for external crystal, saving board space and cost. | Use Scenario: Controlling segmented status display (signal bars, battery icon, network type) in legacy cordless telephones. IC Role / Device Role / Timing Role: Dedicated segment driver interfacing to 8-bit microcontroller via I²C; handles blinking indicators autonomously. Use Value: Hardware blinker frees MCU from timer interrupts; supports arbitrary segment blinking in static mode without firmware overhead. |
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 drive capacity; supports up to 16 backplanes; different I²C command set and RAM mapping | Targeted at larger alphanumeric displays (e.g., 4×20 character modules); not pin-compatible with PCF8566T/1,118 | Select when >24 segments required and cascade complexity must be minimized; verify display RAM initialization sequence compatibility |
| HT1621B | 32×4 segment RAM; built-in RC oscillator only; no external clock option; 3-wire serial interface (not I²C) | Used in cost-sensitive consumer electronics; lacks SYNC-based cascading and bank switching features | Choose for simpler, lower-pin-count designs where I²C is not required and display size fits 32 segments |
Compared with PCF8566T/1,118, PCF8576C offers higher segment count but requires redesign of I²C addressing and timing logic, while HT1621B trades I²C compatibility and cascading capability for integration density and lower interface pin count - neither is pin- or firmware-compatible.
Availability
PCF8566T/1,118 is available at Aetrix Electronics and suitable for energy metering, industrial panel instrumentation, portable medical devices, and telecom handset displays requiring stable component supply and long-term industrial lifecycle support.
Supply support for PCF8566T/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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The PCF8566T/1,118 belongs to NXP's legacy LCD peripheral product line, designed specifically for low-multiplex-rate character and segment displays in cost-sensitive, battery-operated, and industrial HMI systems.
FAQ
What is the maximum LCD segment count supported by the PCF8566T/1,118?
The PCF8566T/1,118 supports up to 24 segment outputs (S0–S23) and up to 4 backplanes (BP0–BP3), enabling a maximum of 96 display elements (e.g., 12×7-segment digits or 6×14-segment characters). This limit is fixed in silicon and applies to all PCF8566T/1,118 units regardless of drive mode or bias configuration.
Does the PCF8566T/1,118 require external components for LCD bias generation?
No, the PCF8566T/1,118 includes an internal LCD bias generator with voltage-follower buffers and a switchable resistor divider. It generates 1/2 or 1/3 bias voltages directly from VDD and VLCD, eliminating external resistors or charge pumps - confirmed in the "LCD bias generator" section of the NXP datasheet Rev. 07.
How does the PCF8566T/1,118 handle cascading with multiple devices?
The PCF8566T/1,118 uses the bidirectional SYNC pin and CLK pin to synchronize frame timing across daisy-chained devices. The first device's CLK output drives the next device's CLK input, while SYNC propagates alignment pulses - enabling coordinated multiplexing for displays exceeding 96 elements, as documented in Figure 4 and Section 7.6 of the datasheet.
What I²C address options are available for the PCF8566T/1,118?
The PCF8566T/1,118 uses a 7-bit I²C address formed by SA0 (bit 0) and A0–A2 (bits 1–3), allowing up to 8 unique addresses (0x70–0x77) on a single bus. Address selection is hardware-configured via PCB traces or jumpers; no software register writes are needed to set the base address.
Can the PCF8566T/1,118 drive a static LCD with only one backplane?
Yes, the PCF8566T/1,118 supports static drive mode using a single backplane (BP0 only), with all four backplane outputs (BP0–BP3) carrying identical signals. In this mode, it drives up to 24 segments with full 1:1 mapping, and the display RAM uses only bit 0 of each 4-bit word - as defined in Table 4 and Section 7.4.1 of the datasheet.
PCF8566T/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
PCF8566T/1,118 FAQ
1.How can I place an order for PCF8566T/1,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCF8566T/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 PCF8566T/1,118 reliable?
The price and inventory of PCF8566T/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 PCF8566T/1,118 is usually 5 days.
3.What payment methods are accepted for PCF8566T/1,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCF8566T/1,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCF8566T/1,118?
PCF8566T/1,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCF8566T/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 PCF8566T/1,118?
For technical support, including PCF8566T/1,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCF8566T/1,118 requirements.
6.How does Aetrix verify that PCF8566T/1,118 is sourced from the original manufacturer or authorized distributors?
All PCF8566T/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 PCF8566T/1,118 meets industry standards.
7.What is the process for return or replacement of PCF8566T/1,118?
All PCF8566T/1,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCF8566T/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 PCF8566T/1,118 part is unused and in its original packaging.
Return procedure for PCF8566T/1,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCF8566T/1,118 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…
