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Name: LPC11U68JBD64K
Brand: NXP USA Inc.
SKU: LPC11U68JBD64K
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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NXP USA Inc. LPC11U68JBD64K

Part No.:: LPC11U68JBD64K

Manufacturer:: NXP USA Inc.

Package:: 64-LQFP

Datasheet:: LPC11U68JBD64K.pdf

Description:: IC MCU 32BIT 256KB FLASH 64LQFP

In Stock:: 3837

Quantity:: Add To Cart

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LPC11U68JBD64K Specifications

Package/Case:
64-LQFP
Packaging:
Tray
Series:
LPC11Uxx
RoHS:
RoHS
Speed:
50MHz
RAM Size:
36K x 8
Core Size:
32-Bit
EEPROM Size:
4K x 8
Part Status:
Active
Peripherals:
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Connectivity:
I²C, Microwire, SmartCard, SPI, SSP, UART/USART, USB
Mounting Type:
Surface Mount
Number of I/O:
48
Core Processor:
ARM® Cortex®-M0+
Data Converters:
A/D 10x12b
Oscillator Type:
Internal
Program Memory Size:
256KB (256K x 8)
Program Memory Type:
FLASH
Operating Temperature:
-40°C ~ 105°C (TA)

LPC11U68JBD64K this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including LPC11U68JBD64K price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for LPC11U68JBD64K to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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LPC11U68JBD64K information

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LPC11U68JBD64K Typical application Circuitry

LPC11U68JBD64K is a microcontroller chip with diverse functionality, commonly used in embedded systems for various applications. It features an ARM Cortex-M0 CPU, rich peripherals, and low power consumption.

Application Scenario:

In USB device applications, LPC11U68JBD64K can be utilized to create USB-enabled devices such as USB flash drives, USB keyboards, or USB audio interfaces.

Circuit Design:

To design a USB keyboard interface using LPC11U68JBD64K, follow these detailed steps:

1. USB Connection:

Connect the D+ and D- pins of LPC11U68JBD64K (pins P0.19 and P0.18 respectively) to the corresponding D+ and D- lines of a USB Type-A connector. Ensure proper impedance matching and signal integrity by using series resistors and termination resistors.

2. Keyboard Matrix:

Connect the rows and columns of the keyboard matrix to GPIO pins of LPC11U68JBD64K. For example, connect the rows to pins P0.0-P0.3 and the columns to pins P0.4-P0.7. Implement pull-up or pull-down resistors for each GPIO pin to ensure proper logic levels.

3. USB Protocol Handling:

Implement USB protocol handling in firmware to manage USB enumeration, report descriptor parsing, and HID (Human Interface Device) communication. Utilize the USB peripheral of LPC11U68JBD64K and corresponding APIs provided by the development toolchain.

4. Key Press Detection:

Scan the keyboard matrix periodically in firmware to detect key presses. Implement debouncing algorithms to filter out spurious or bouncing key events. Use interrupts or polling mechanisms to handle key press events efficiently.

5. LED Indicator:

Connect an LED to a GPIO pin of LPC11U68JBD64K, such as pin P0.8, to indicate the status of the keyboard (e.g., Caps Lock or Num Lock). Implement firmware logic to control the LED based on keyboard state changes.

Considerations:

When designing the USB keyboard interface circuit, it's crucial to consider the following:

- USB Compliance: Ensure compliance with USB specifications regarding signal levels, timing, and protocol requirements to guarantee interoperability with USB hosts.

- Power Consumption: Optimize firmware and hardware design to minimize power consumption and extend battery life, if applicable, for portable USB keyboard applications.

- Key Rollover: Implement support for key rollover (e.g., N-key rollover) in firmware to handle multiple simultaneous key presses accurately.

- ESD Protection: Incorporate ESD (Electrostatic Discharge) protection measures, such as TVS diodes or ESD suppression components, to safeguard LPC11U68JBD64K against damage from electrostatic discharge events.

- Firmware Update: Design the firmware to support firmware updates via USB DFU (Device Firmware Upgrade) protocol, allowing for future enhancements or bug fixes.

LPC11U68JBD64K FAQ

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3. Are the LPC11U68JBD64K price and inventory displayed accurate?

The price and inventory of LPC11U68JBD64K fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

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Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.

6. What is the process for return or replacement of LPC11U68JBD64K?

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 LPC11U68JBD64K we delivered, we will accept the replacement or return of the LPC11U68JBD64K 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 LPC11U68JBD64K.

(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