P89LPC922FN

The P89LPC922FN is an 8-bit microcontroller with 2 kB flash, 128 byte data RAM, and an on-chip 10-bit A/D converter. It is designed for low power consumption and features a wide range of integrated peripherals, making it suitable for a variety of embedded control applications.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• RXD: Serial data input for UART receiver
• TXD: Serial data output for UART transmitter
• NRESET: Reset pin
• P1[7:0]: Port 1 for general-purpose digital I/O
• P3[3:0]: Port 3 for general-purpose digital I/O and A/D converter
• VSS: Ground
• VDD: Positive power supply
• P2[7:0]: Port 2 for general-purpose digital I/O and ALE/PROG
• RSTOUT: Reset output
• P0[7:0]: Port 0 for general-purpose digital I/O
• EA: External access enable
• ALE/PROG: Address latch enable and programming control for external memory interfacing
• PSEN: Program store enable for external memory interfacing

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the P89LPC922FN microcontroller for a visual representation.

Key Features

• Low Power Consumption: The P89LPC922FN is designed for low power operation, making it suitable for battery-powered applications.
• Integrated Peripherals: It features a 10-bit A/D converter, UART, and general-purpose I/O ports for versatile embedded control.
• Flash Memory: The 2 kB on-chip flash memory allows for program storage and flexibility in firmware development.
• Small Package: Available in a compact 20-pin SSOP package, saving board space in compact designs.
• Wide Operating Voltage Range: Operates from a single +2.7V to +3.6V supply, suitable for various embedded systems.

Note: For detailed technical specifications, please refer to the P89LPC922FN datasheet.

Application

• Embedded Control: Ideal for embedded control applications in consumer electronics, industrial automation, and IoT devices.
• Sensor Interface: Suitable for interfacing with sensors and processing analog inputs using the integrated A/D converter.
• Data Acquisition Systems: Used in data acquisition systems requiring low power consumption and integrated peripherals.

Functionality

The P89LPC922FN microcontroller is a versatile 8-bit solution with integrated peripherals for low power embedded control applications. It provides efficient processing and analog interface capabilities for a wide range of designs.

Usage Guide

• Power Supply: Connect VDD (Pin 20) to the supply voltage (2.7V to 3.6V) and VSS (Pin 10 and Pin 11) to ground.
• Peripheral Interface: Utilize the UART, A/D converter, and general-purpose I/O ports for communication and interface control.
• Reset Control: Use the NRESET (Pin 3) pin to reset the microcontroller and RSTOUT (Pin 14) for reset output indication.

Frequently Asked Questions

Q: Can the P89LPC922FN operate at higher voltage levels?
A: The P89LPC922FN is designed to operate within the specified voltage range of 2.7V to 3.6V. For higher voltage requirements, consider alternative microcontroller solutions.

Q: Is the P89LPC922FN suitable for battery-powered devices?
A: Yes, the low power consumption and wide operating voltage range make the P89LPC922FN well-suited for battery-powered applications.