SPI to I²C-Bus Bridge

SC18IS604

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SC18IS604 is designed to serve as an interface between the standard SPI of a host (microcontroller, microprocessor, chip set, etc.) and the serial I2C-bus. This allows the host to communicate directly with other I2C-bus devices. SC18IS604 can operate as an I2C-bus controller-transmitter or controller-receiver. SC18IS604 controls all the I2C-bus specific sequences, protocol, arbitration and timing.

SC18IS604 is a functional replacement for SC18IS600 with exception of: new pinout, transmit and receive buffer of 255 bytes vs 96 bytes, three instead of four GPIOs but no longer with quasi bidirectional mode, operating supply voltage lower level lowered to 1.71 V vs 2.4 V and temperature range of -40 to 105 °C vs -40 to 85 °C.

Product Details

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Block Diagram

SC18IS604 Block Diagram

SC18IS604 Block Diagram
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Features

Key Features

  • SPI peripheral interface to I2C-bus controller
  • High-speed SPI: Up to 1.2 Mbit/s
  • Fast-mode I2C-bus: 375 kHz
  • 255-byte TX and RX FIFO
  • Five general purpose input/output (GPIO) pins
  • 1.71 V to 3.6 V operation with 5 V tolerant I/O pins

Temperature Range

  • -40 to 105 °C

ESD Protection

  • Exceeds 2000 V HBM per JESD22-A114

Product Longevity Program

  • This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The SC18IS604PW is included in the 10-year program

Part numbers include: SC18IS604PW.

Comparison Table

SPI/UART to I2C

Part Number UART SPI I2C GPIO Function
SC18IS604 NA 1.2 MHz 375 kHz 5 SPI to I2C
SC18IM704 460.8 Kbit/s NA 375 kHz 8 UART to I2C

I2C to SPI

Part Number UART SPI I2C GPIO Function
SC18IS606 NA 1.8 MHz 400 kHz 3 I2C to SPI

I2C/SPI to UART

Part Number UART SPI I2C GPIO Function
SC16IS740/750/752 5 Mbit/s 15 Mbit/s 400 kHz 8 I2C/SPI to UART

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Hardware

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