Datasheet

1. General description
The SC18IS602/602B and SC18IS603 are designed to serve as an interface between a
standard I
2
C-bus of a microcontroller and an SPI bus. This allows the microcontroller to
communicate directly with SPI devices through its I
2
C-bus. The SC18IS602/602B/603
operates as an I
2
C-bus slave-transmitter or slave-receiver and an SPI master. The
SC18IS602/602B/603 controls all the SPI bus-specific sequences, protocol, and timing.
The SC18IS602/602B has its own internal oscillator, while the SC18IS603 requires an
external clock source for operation. SC18IS602 and SC18IS603 do not support SS2
function as SPI slave select signal; this pin can only be used as GPIO2.
2. Features
n I
2
C-bus slave interface operating up to 400 kHz
n SPI master operating up to 1.8 Mbit/s (SC18IS602/602B) or 4 Mbit/s (SC18IS603)
n 200-byte data buffer
n Up to four slave select outputs
n Up to four programmable I/O pins
n Operating supply voltage: 2.4 V to 3.6 V
n Low power mode
n Internal oscillator option
n Active LOW interrupt output
n ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per
JESD22-A115, and 1000 V CDM per JESD22-C101
n Latch-up testing is done to JEDEC Standard JESD78 that exceeds 100 mA
n Very small 16-pin TSSOP
3. Applications
n Converting I
2
C-bus to SPI
n Adding additional SPI bus controllers to an existing system
SC18IS602/602B/603
I
2
C-bus to SPI bridge
Rev. 04 — 11 March 2008 Product data sheet