SC16C852LIBS,157

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C852LIBS,157 is a discontinued dual Universal Asynchronous Receiver and Transmitter (UART) manufactured by NXP Semiconductors. It operates at 1.8 V and supports serial data rates up to 5 Mbit/s. The device features 128-byte transmit and receive FIFOs to reduce external CPU bandwidth requirements. It offers selectable Intel (16 mode) or Motorola (68 mode) bus interfaces via the 16/68 pin. The component includes an IrDA encoder/decoder supporting version 1.0 and provides modem control functions. It is housed in an HVQFN32 package with dimensions of 5 x 5 x 0.85 mm.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual channel architecture with independent programmable baud rate generators for each UART.
• Configurable bus interface supporting both Intel and Motorola protocols through hardware pin selection.
• Integrated infrared capability with built-in encoder and decoder for IrDA communication.
• Advanced flow control mechanisms including automatic software Xon/Xoff and hardware RTS/CTS.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial data communications in handheld devices requiring low power consumption.
• Industrial systems utilizing shared network environments with high-speed modems.
• Embedded applications needing parallel-to-serial conversion with reduced CPU overhead.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

This specific part number is officially listed as No Longer Manufactured. Verification of availability should focus on historical stock or authorized distributors holding legacy inventory. Ensure that the ordering suffix corresponds to the required packaging variant, as functional specifications remain consistent across the discontinued series.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component only if a 1.8 V supply voltage and dual UART functionality are strictly required. Verify compatibility with the target host processor's bus interface, as the device supports distinct Intel and Motorola modes. Consider the HVQFN32 package constraints regarding thermal management and PCB layout requirements for the exposed pad.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The SC16C852L serves as an enhanced successor to the SC16C652B, offering increased FIFO depth from 32 bytes to 128 bytes. It maintains pin and software compatibility with previous generations while providing higher throughput capabilities. The device is designed for applications demanding efficient data handling in multi-channel environments.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate alternative NXP UART families or verify if the SC16C652B meets functional requirements, noting the difference in FIFO capacity.

UARTs (Universal Asynchronous Receiver Transmitter) FAQ

How is the bus interface type selected?

The bus interface is selected using the 16/68 pin. A logic high or unconnected state configures the device for Intel bus interface, while a logic low configures it for Motorola bus interface.

What is the maximum data rate supported?

The SC16C852L can handle serial data rates up to 5 Mbit/s when used with an external 80 MHz clock. With a crystal oscillator, the maximum rate is up to 1.5 Mbit/s.

Does the device support infrared communication?

Yes, the device includes a built-in IrDA encoder and decoder that supports IrDA version 1.0, allowing for infrared data transmission up to 115.2 kbit/s.