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Name: PCA85162T/Q900/1HL
Brand: NXP USA Inc.
SKU: PCA85162T/Q900/1HL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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NXP USA Inc. PCA85162T/Q900/1HL

Part No.:: PCA85162T/Q900/1HL

Manufacturer:: NXP USA Inc.

Package:: 48-TFSOP (0.240, 6.10mm Width)

Datasheet:: PCA85162T/Q900/1HL.pdf

Description:: IC DRVR 32 SEGMENT 48TSSOP

In Stock:: 3844

Quantity:: Add To Cart

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PCA85162T/Q900/1HL Typical application Circuitry

PCA85162T Q900 1HL

The PCA85162T/Q900/1HL is a programmable LCD driver designed for driving liquid crystal displays (LCDs). It is equipped with an I²C-bus interface, which makes it suitable for applications requiring alphanumeric and segmented display capabilities.

Application Scenario: Digital Clock Display for Home Appliances

1. LCD Panel Connection:

The PCA85162T/Q900/1HL can drive an LCD panel suitable for displaying time in a digital clock embedded within a home appliance, like a microwave or an oven. Each segment of the LCD is connected to the corresponding segment output on the chip. This requires a detailed mapping of the LCD segments (such as numbers and symbols) to the chip's segment outputs, ensuring that the display can show all the necessary characters for time representation.

2. Power Supply Management:

A stable power supply is crucial for the reliable operation of the PCA85162T/Q900/1HL. Typically operating at a low voltage, around 3.3V to 5V, it's essential to connect the VDD pin to a regulated power source matching this voltage. Decoupling capacitors should be placed close to the power supply pins to filter out noise and prevent transient voltage spikes.

3. I²C-Bus Interface Configuration:

To control the PCA85162T/Q900/1HL, it is interfaced with a microcontroller via the I²C-bus (Inter-Integrated Circuit). The SDA (Serial Data) and SCL (Serial Clock) pins of the chip are connected to the corresponding I²C-bus lines on the microcontroller. Proper pull-up resistors must be added to these lines to ensure reliable communication over the I²C-bus.

4. Multiplexing for Display Drive:

The PCA85162T/Q900/1HL utilizes multiplexing to drive the LCD segments effectively. This technique allows the chip to control many segments with a limited number of pins by rapidly switching them on and off at a frequency that is imperceptible to the human eye. Designing the circuit requires an understanding of the multiplex rate supported by the chip and the LCD panel's requirements to ensure clear and stable display output.

5. Software Programming for Display Control:

Programming the microcontroller to communicate with the PCA85162T/Q900/1HL involves sending commands over the I²C-bus to control which segments are activated on the LCD. This includes setting up the correct time display format (e.g., 12-hour or 24-hour format) and updating the displayed time. The software must manage the timing and logic to handle timekeeping accurately and update the display accordingly.

Design Considerations:

- Voltage Compatibility: Ensure that the power supply voltage matches the PCA85162T/Q900/1HL's requirements and that voltage levels on the I²C-bus are compatible with both the microcontroller and the LCD driver.

- Communication Protocol: Implement the I²C communication protocol correctly in the microcontroller's firmware, considering the clock speed and data transmission requirements.

- Display Mapping: Carefully map the LCD segments to the PCA85162T/Q900/1HL's outputs, planning the display layout to support all necessary characters and symbols.

- Electrical Noise Management: Incorporate noise suppression techniques, especially on the power supply lines and the I²C-bus, to ensure stable operation in potentially noisy environments like kitchen appliances.

- Programming Flexibility: Develop software with flexibility to adjust the display parameters, such as brightness and contrast (if supported by the chip), and to easily modify the displayed content for future updates or different applications.

In summary, the PCA85162T/Q900/1HL is a versatile LCD driver that can be effectively used in home appliances for displaying time or other information. By addressing key design considerations related to power supply, communication interface, display mapping, noise management, and software programming, engineers can create reliable and user-friendly digital displays.

PCA85162T/Q900/1HL information

PCA85162T/Q900/1HL Specifications

Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Obsolete
DisplayType:
LCD
Configuration:
32 Segment
Interface:
I²C
DigitsorCharacters:
-
Current-Supply:
80 µA
Voltage-Supply:
1.8V ~ 5.5V
OperatingTemperature:
-40°C ~ 95°C
MountingType:
Surface Mount

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6. What is the process for return or replacement of PCA85162T/Q900/1HL?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the PCA85162T/Q900/1HL we delivered, we will accept the replacement or return of the PCA85162T/Q900/1HL only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of PCA85162T/Q900/1HL.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations