SC18IS603IPW,112

Controllers Overview

The SC18IS603IPW is an I2C-bus to SPI bridge controller manufactured by NXP Semiconductors. It enables microcontrollers with only an I2C interface to communicate directly with SPI devices. The device operates as an I2C slave and an SPI master, managing all SPI protocol sequences. Unlike the SC18IS602, the SC18IS603 requires an external clock source on the CLKIN pin, supporting frequencies up to 18 MHz. This allows for a higher SPI master operating speed of up to 4 Mbit/s. It features a 200-byte data buffer, four programmable GPIO pins, and supports I2C speeds up to 400 kHz.

Controllers Feature Summary

• Acts as a bridge between standard I2C buses and SPI interfaces, allowing I2C masters to control SPI peripherals.
• Requires an external clock source for operation, enabling SPI master speeds up to 4 Mbit/s.
• Includes a 200-byte data buffer for storing transmitted and received information.
• Provides up to four slave select outputs that can be configured as general-purpose I/O pins.

Controllers Applications

• Converting I2C-bus signals to SPI for interfacing with SPI-enabled devices.
• Adding additional SPI bus controllers to existing systems limited to I2C interfaces.

Controllers Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm the external clock frequency requirements align with the target application design. Ensure the I2C address configuration via A0-A2 pins meets system addressing constraints. Check for any end-of-life notifications or alternative component recommendations from the manufacturer.

Controllers Selection Notes

Select this component when an external clock source is available and higher SPI throughput than internal oscillator variants is required. It is suitable for designs needing precise SPI timing derived from an external reference. Consider the SC18IS602 if an internal oscillator is preferred and lower SPI speeds are acceptable.

Controllers Part Context

This part belongs to the SC18IS60x family of I2C-to-SPI bridges. It shares functional similarities with the SC18IS602 but differs in its clocking mechanism. The SC18IS603 is designed for applications where the internal RC oscillator's accuracy or maximum speed is insufficient, necessitating an external clock input for stable high-speed SPI communication.

Controllers Replacement Considerations

SC18IS602IPW (requires internal oscillator and supports lower SPI speeds).

Controllers FAQ

Does the SC18IS603 support SS3?

No, the SC18IS603 does not have an SS3 pin; it only supports SS0, SS1, and SS2.

What is the maximum SPI operating frequency for the SC18IS603?

The SC18IS603 supports SPI master operations up to 4 Mbit/s when driven by an appropriate external clock source.

How is the I2C slave address configured?

The address consists of a fixed part and three programmable bits (A0, A1, A2), allowing up to eight devices on the same I2C bus.