SPI slave to I²C master/GPIO bridges

NXP bridge solutions include products that provide seamless protocol convergence between the two widely-used, bus-shared architectures: SPI and I2C. Our bridges allow hosts having an SPI bus to easily communicate with I²C-bus devices such as LCD displays, temperature/voltage sensors, and EEPROM data storage. Our bridges' GPIOs further allow you to expand your system for detecting push buttons/keypads and controlling LEDs and fans.

The bridge interface to the SPI bus is a slave that uses four wires (2 data and 2 control signals) and operates at speeds as high as 3Mbps. The bridge interface to the I²C bus is a master that uses two wires (SCL and SDA) and supports speeds up to 400KHz. The bridge GPIOs are configurable.

These bridges operate from 2.4V to 3.6V and come in TSSOP packages and feature a power-down mode. They can be used in industrial applications with a temperature range of -40 to +85 °C.

An SPI slave to I²C-bus master bridge allows a host with SPI-bus capability to transparently communicate to an I²C-bus. Our bridge's I²C bus controller has multi-master capability. This allows it to share the bus with other I²C masters such as a microcontroller.

Additional GPIOs can be used for:

• System monitoring
• Diagnostics
• LED lighting/blinking
• Button/Keypad press detection
• Status information

Product	GPIOs	Oscillator	SPI Speed
SC18IS600	4	Internal	1 Mbps
SC18IS601	3	External	3 Mbps

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	SC18IS600	SPI slave bridge to I2C master with GPIO with internal clock
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• NXP SC18IS600 SPI Slave to I²C Master/GPIO Bridge Demoboard

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	Connect I2C/SPI slave or UART to I2C/SPI master or GPIO NXP I2C/SPI master bridges SC18IS600/601, SC18IS602/603, and SC18IM700 © November 2006; English; Ordering Code: 9397 750 15763
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• Bridges