P89LPC922FDH

Microcontrollers Overview

The P89LPC922FDH is an 8-bit microcontroller from the NXP P89LP series, featuring a two-clock 80C51 core. It integrates 8 kB of byte-erasable Flash program memory and 256 bytes of RAM. The device operates within a voltage range of 2.4 V to 3.6 V and supports a maximum frequency of 18 MHz. It includes one UART channel, one I2C bus interface, and one PWM unit. The component is housed in a 20-pin TSSOP package with dimensions of 6.6 x 4.5 x 0.95 mm and functions across a temperature range of -40 °C to +85 °C.

Microcontrollers Feature Summary

• Accelerated instruction execution speed compared to standard 80C51 devices
• Integrated low-power Flash memory supporting in-system programming
• Built-in analog comparators and real-time clock functionality

Microcontrollers Applications

• Temperature and humidity control systems
• Low-cost embedded control applications
• Battery-powered devices requiring low power consumption

Microcontrollers Procurement Notes

Verify the manufacturer designation as NXP Semiconductors despite the provided brand label. Confirm the specific suffix FDH corresponds to the TSSOP-20 package variant. Ensure compatibility with 3V logic levels and check for end-of-life status through official NXP channels before procurement planning.

Microcontrollers Selection Notes

Select this component when a high-performance 80C51 architecture is required with integrated Flash memory and minimal external components. It is suitable for designs needing I2C and UART connectivity within a compact 20-pin surface-mount footprint. Consider the 2.4V to 3.6V operating range for battery or single-supply applications.

Microcontrollers Part Context

This part belongs to the P89LPC92x family of 8-bit microcontrollers designed for cost-sensitive applications. The series emphasizes system integration by incorporating peripherals such as timers, comparators, and communication interfaces directly onto the chip, reducing overall board space and component count.

Microcontrollers Replacement Considerations

Consult NXP documentation for direct pin-compatible substitutes within the P89LPC92x series, such as variants with different memory sizes like the P89LPC921FDH.