I²C-Bus to SPI Bridge

SC18IS606

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SC18IS606 is designed to serve as an interface between a standard I2C-bus of a microcontroller and an SPI bus. This allows the microcontroller to communicate directly with SPI devices through its I2C-bus. SC18IS606 operates as an I2C-bus target-transmitter or target-receiver and an SPI controller. SC18IS606 controls all the SPI bus specific sequences, protocol and timing. SC18IS606 has its own internal oscillator, and it supports three SPI chip select outputs that may be configured as GPIO when not used as SPI chip select.

SC18IS606 is a functional replacement for SC18IS602B with exception of: new pinout, three instead of four chip selects but without quasi bidirectional mode, operating supply voltage lower level of 1.71 V vs 2.4 V, data buffer increased to 1024 bytes vs 200 bytes and temperature range of -40 °C to 105 °C vs -40 °C to 85 °C.

Product Details

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Block Diagram

SC18IS606PW Block Diagram

SC18IS606PW Block Diagram
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Features

Key Features

  • I2C-bus peripheral interface to SPI controller
  • Fast-mode I2C-bus: 400 kHz
  • High-speed SPI: Up to 1.8 Mbit/s
  • 1024-byte TX and RX FIFO
  • Three target chip select output pins which can be used instead for general purpose input/output (GPIO)
  • 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 SC18IS606PW is included in the 10-year program

Part numbers include: SC18IS606PW.

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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