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NXP Semiconductors PCF8536BT/1,118
- Part No.:
- PCF8536BT/1,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Display Drivers
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PCF8536BT/1,118.pdf
- Description:
- IC DRVR 7 SEGMENT 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,272
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Product details
Overview
PCF8536BT/1,118 from NXP Semiconductors is a SPI-interface universal LCD driver IC supporting up to 8 backplanes and 44 segments (320 elements total), integrated with a 6-channel PWM backlight controller offering 128-step resolution per channel. It operates from 1.8 V to 5.5 V logic supply and supports LCD bias voltages up to 9.0 V, enabling direct drive of high-threshold twisted nematic displays in white goods control panels.
For engineers reviewing the PCF8536BT/1,118 datasheet, PCF8536BT/1,118 pinout, PCF8536BT/1,118 application, or PCF8536BT/1,118 equivalent, this page delivers verified SPI-bus timing (5 MHz), TSSOP56 package mapping, factory-calibrated 60–300 Hz LCD frame frequency programming, and confirmed drop-in replacement guidance per NXP PCN202102010F01.
Technical Context
The PCF8536BT/1,118 implements a dedicated SPI-bus interface (CE, SCL, SDI) - distinct from the I²C variant PCF8536AT - with auto-incremented display RAM addressing to minimize host MCU overhead. Its internal architecture separates LCD waveform generation (programmable frame frequency, selectable 1/2/1/3/1/4 bias, 4/6/8 multiplex modes) from independent PWM signal synthesis (7-bit resolution, configurable frame frequency, inversion capability).
Timing is derived from either an internal 230 kHz oscillator (factory calibrated ±5%) or an external clock applied to OSCCLK (9.6 kHz or 230 kHz), with automatic fallback to internal oscillator for PWM when external 9.6 kHz is selected. Backplane swapping (BPS bit) reassigns BP0–BP7 to alternate pins to simplify PCB routing without layer changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface | SPI-bus (CE, SCL, SDI); 5 MHz max clock rate - enables deterministic, low-latency communication with microcontrollers lacking I²C hardware. |
| LCD Drive Capacity | Up to 8 backplanes × 44 segments = 320 elements - supports 40×7-segment digits or full graphic segments in appliance UIs. |
| PWM Channels | 6 independent outputs with 128-step (7-bit) resolution - sufficient for dual RGB LED backlight control (2M+ colors each) or discrete static/GPO use. |
| Frame Frequency Range | 60 Hz to 300 Hz in 10 Hz steps (software-programmable) - avoids visible flicker while allowing optimization for power vs. contrast in battery or AC-powered devices. |
| Supply Ranges | VDD: 1.8 V–5.5 V; VLCD: 2.5 V–9.0 V - permits coexistence with low-voltage MCUs and direct drive of high-Vth TN LCDs without external charge pumps. |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial and white-goods environments including oven control panels and refrigerator displays. |
| Package | TSSOP56 (SOT364-1); 14 mm × 6.1 mm × 1.2 mm body, 0.5 mm pitch - surface-mount compatible with standard reflow profiles and automated assembly. |
Pinout & Package
TSSOP56 plastic thin shrink small outline package (SOT364-1), 56-lead, 0.5 mm pitch, 14 mm × 6.1 mm × 1.2 mm body. Pin functions are specific to PCF8536BT variant (SPI interface).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–11, 20–31, 48–56, 54–56† | LCD segment output (S0–S43) | Drive individual LCD segments; S0–S5 also serve as GPO/PWM outputs depending on GPM register configuration. |
| 12–19, 32–39 | LCD backplane output (BP0–BP7) | Provide common AC drive signals; pin mapping swaps between BPS=0/BPS=1 to aid single-layer PCB routing. |
| 40 | CE (chip enable) | Active-low SPI select; enables serial data transfer only when asserted - reduces bus contention in multi-peripheral systems. |
| 41 | SCL (serial clock) | SPI clock input; synchronizes SDI data sampling and command execution at up to 5 MHz. |
| 42 | SDI (serial data input) | SPI data input; receives commands and display/PWM data via MSB-first 8-bit frames. |
| 43 | RESET | Asynchronous active-low reset; initiates full internal initialization (1 ms duration), independent of SPI state. |
| 44 | VSS | Ground reference for logic and analog sections; must be low-impedance to minimize noise coupling into LCD waveforms. |
| 45 | VDD | Digital supply (1.8–5.5 V); powers core logic, SPI interface, and display RAM - separate from VLCD for voltage domain isolation. |
| 46 | OSCCLK | Configurable clock terminal: input for external 9.6/230 kHz clock or output for internal oscillator signal (when COE=1). |
| 47 | VLCD | LCD supply (2.5–9.0 V); powers LCD bias generator and segment/backplane drivers - must be ≥ VDD and applied/removed concurrently. |
†Pin 54–56 labeled as S6–S8 in Figure 4; S9–S19 (pins 1–11), S20–S31 (pins 20–31), S0/GP0–S5/GP5 (pins 48–53), S39/BP0–S36/BP3 (pins 19,39,38,37,36), S35/BP4/S43–S32/BP7/S40 (pins 35–32) - full mapping per Figure 4 and Table 3.
Key Features
| Feature | Design Value |
|---|---|
| Integrated 6-channel PWM generator | Each channel provides 128-step intensity control and independent frame frequency tuning - eliminates need for external LED drivers in backlight subsystems. |
| Selectable LCD multiplexing | Software-configurable 1:4 / 1:6 / 1:8 drive modes - matches physical LCD construction without hardware change, reducing BOM variants. |
| Backplane swapping (BPS) | Reassigns BP0–BP7 to opposite side of TSSOP56 package - enables single-layer PCB layout for compact appliance displays, avoiding costly vias. |
| Programmable LCD frame frequency | 60–300 Hz in 10 Hz increments, factory-calibrated - ensures flicker-free operation across temperature and supply variations without external timing components. |
| Independent logic and LCD supplies | VDD (1.8–5.5 V) and VLCD (2.5–9.0 V) are electrically isolated - allows mixed-voltage system design and eliminates level-shifting for high-Vth LCDs. |
| Power-down mode with static GPO hold | When PD=1 and E=0, segment/backplane outputs go to VSS and GPOs retain last static state - preserves LED off-state during sleep without MCU intervention. |
Applications
| Oven Control Panel | Refrigerator Display Module |
|---|---|
|
Use Scenario: Embedded microcontroller drives segmented LCD showing temperature, timer, and mode indicators in residential kitchen appliances. IC Role / Device Role / Timing Role: PCF8536BT/1,118 acts as dedicated LCD and backlight controller, receiving display data via SPI and generating synchronized AC waveforms for 8-backplane display plus 6-channel PWM for LED backlight dimming. Use Value: Reduces MCU firmware load by handling auto-incremented RAM writes and frame timing; 9.0 V VLCD support enables direct drive of high-contrast TN displays without external boost circuitry. |
Use Scenario: Compact display module in refrigerator door showing temperature, ice/water status, and energy mode using alphanumeric and icon segments. IC Role / Device Role / Timing Role: PCF8536BT/1,118 serves as unified display interface, managing 44-segment layout and driving RGB LEDs for status indication with precise 128-level brightness control per channel. Use Value: 6-channel PWM eliminates need for discrete LED drivers; programmable 60–300 Hz frame frequency prevents flicker under variable ambient lighting conditions. |
| Washing Machine User Interface | Industrial Thermostat Display |
|
Use Scenario: Front-panel LCD with 7-segment digits and function icons in washing machine control board operating across −25 °C to +70 °C ambient. IC Role / Device Role / Timing Role: PCF8536BT/1,118 provides robust LCD drive with selectable 1/3 bias and 1:6 multiplexing, while its 6 PWM outputs manage status LEDs and backlight intensity. Use Value: −40 °C to +85 °C rating ensures reliability in humid, thermally cycling environments; backplane swapping simplifies 2-layer PCB routing for space-constrained control boards. |
Use Scenario: Wall-mounted thermostat with monochrome graphic LCD and color-coded status LEDs in HVAC control systems. IC Role / Device Role / Timing Role: PCF8536BT/1,118 functions as display and illumination controller, using S0–S5 as PWM outputs for RGB indicators and remaining pins for 320-element graphics. Use Value: Independent VDD/VLCD rails allow integration with 3.3 V MCU and 5 V backlight supply; OTP-refresh command ensures stable frame frequency calibration over product lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LCD and backlight controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCF8536BT/1Y | Identical functionality and pinout; dry-pack packaging (moisture-sensitive device handling) versus non-dry-pack PCF8536BT/1,118. | Required for high-volume automated assembly with strict humidity exposure limits; same electrical behavior and thermal profile. | Select PCF8536BT/1Y when moisture sensitivity (MSL 3) compliance is mandated by manufacturing process or long-term storage requirements. |
| PCF8576D | Higher segment count (528 elements), I²C-only interface (400 kHz), no integrated PWM - requires external LED drivers for backlight control. | Suitable for larger displays (e.g., 64×64 dot matrix) but lacks native backlight management; incompatible SPI interface necessitates MCU firmware redesign. | Choose PCF8576D only when display size exceeds 320 elements and backlight is handled separately; not a functional substitute for PCF8536BT/1,118's integrated PWM capability. |
Compared with PCF8536BT/1Y, PCF8536BT/1,118 offers identical electrical performance but requires non-dry-pack handling; versus PCF8576D, it trades segment capacity for built-in 6-channel PWM and SPI compatibility - making it optimal for cost-sensitive, space-constrained white-goods displays requiring integrated backlight control.
Availability
PCF8536BT/1,118 is available at Aetrix Electronics and suitable for white goods control panels, refrigerator display modules, and washing machine user interfaces requiring stable component supply across extended production lifecycles.
Supply support for PCF8536BT/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 specializing in secure connectivity solutions for automotive, industrial, and consumer applications, with leadership in interface, power management, and display controller ICs.
The PCF8536 product line was designed specifically for cost-effective, low-multiplex-rate LCD interfacing in home appliances - integrating display drive, bias generation, and LED backlight control into a single SPI/I²C-compatible chip to reduce system complexity.
FAQ
What interface protocol does the PCF8536BT/1,118 support?
The PCF8536BT/1,118 supports only the SPI-bus interface (chip enable CE, serial clock SCL, serial data input SDI) at up to 5 MHz. It is not compatible with I²C - that functionality is exclusive to the PCF8536AT variant. The SPI interface reduces MCU resource usage compared to bit-banged I²C and enables deterministic timing for display updates in real-time appliance control systems. PCF8536BT/1,118 requires no protocol translation layer when paired with SPI-capable microcontrollers.
Does the PCF8536BT/1,118 require an external crystal or oscillator?
No, the PCF8536BT/1,118 contains a factory-calibrated internal 230 kHz oscillator sufficient for both LCD frame generation and PWM operation. An external clock (9.6 kHz or 230 kHz) may be applied to the OSCCLK pin if system-level synchronization is required, but it is optional. When using external 9.6 kHz, the internal oscillator automatically activates for PWM generation. PCF8536BT/1,118 eliminates BOM cost and board space associated with external timing components while maintaining ±5% frame frequency accuracy across temperature.
How many LCD segments and backplanes can the PCF8536BT/1,118 drive?
The PCF8536BT/1,118 supports up to 44 segments and 8 backplanes, enabling control of LCDs with up to 320 display elements (e.g., 40×7-segment digits or custom graphic layouts). Multiplex mode (1:4, 1:6, or 1:8) is software-selectable via the set-MUX-mode command. This flexibility allows one PCF8536BT/1,118 design to scale across multiple display sizes without hardware revision - a key advantage for appliance manufacturers managing families of products with varying UI complexity.
Can the PCF8536BT/1,118 drive high-voltage LCDs?
Yes, the PCF8536BT/1,118 supports LCD supply voltages (VLCD) from 2.5 V to 9.0 V, making it suitable for high-threshold twisted nematic (TN) displays commonly used in white goods for improved contrast and viewing angle. VLCD must be ≥ VDD and applied/removed simultaneously with VDD to prevent static charge buildup on the LCD glass. This wide VLCD range eliminates the need for external charge pumps or DC-DC boost converters in designs targeting 5 V or higher LCD bias rails.
Is there a drop-in replacement for the PCF8536BT/1,118?
Per NXP PCN202102010F01 and Discontinuation Notice 202107021DN, PCF8536BT/1Y is documented as the drop-in replacement for PCF8536BT/1,118 - identical functionality, pinout, and electrical specifications, differing only in dry-pack moisture-sensitive packaging. No PCB or firmware changes are required. PCF8536BT/1Y maintains full backward compatibility and is recommended for new designs where MSL-3 handling is part of the manufacturing flow. PCF8536BT/1,118 remains available for legacy production continuity.
PCF8536BT/1,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Display Type:
- LED, LCD
- Configuration:
- 7 Segment + DP, 14 Segment + DP + AP, Dot Matrix
- Interface:
- SPI
- Digits or Characters:
- 20 Characters, 40 Characters, 320 Elements
- Current - Supply:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
PCF8536BT/1,118 FAQ
1.How can I place an order for PCF8536BT/1,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCF8536BT/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 PCF8536BT/1,118 reliable?
The price and inventory of PCF8536BT/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 PCF8536BT/1,118 is usually 5 days.
3.What payment methods are accepted for PCF8536BT/1,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCF8536BT/1,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCF8536BT/1,118?
PCF8536BT/1,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCF8536BT/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 PCF8536BT/1,118?
For technical support, including PCF8536BT/1,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCF8536BT/1,118 requirements.
6.How does Aetrix verify that PCF8536BT/1,118 is sourced from the original manufacturer or authorized distributors?
All PCF8536BT/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 PCF8536BT/1,118 meets industry standards.
7.What is the process for return or replacement of PCF8536BT/1,118?
All PCF8536BT/1,118 units undergo pre-shipment inspection (PSI). If there is an issue with PCF8536BT/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 PCF8536BT/1,118 part is unused and in its original packaging.
Return procedure for PCF8536BT/1,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PCF8536BT/1,118 Tags
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PCA8561AHN/AY
NXP Semiconductors
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SN74LS47N
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PCF85176T/1Y
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PCF85134HL/1,118
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AS1115-BSST
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LM3914V/NOPB
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