Datasheet

1. General description
The SC18IM700 is designed to serve as an interface between the standard UART port of
a microcontroller or microprocessor and the serial I
2
C-bus; this allows the microcontroller
or microprocessor to communicate directly with other I
2
C-bus devices. The SC18IM700
can operate as an I
2
C-bus master. The SC18IM700 controls all the I
2
C-bus specific
sequences, protocol, arbitration and timing. The host communicates with SC18IM700 with
ASCII messages protocol; this makes the control sequences from the host to the
SC18IM700 become very simple.
2. Features
n UART host interface
n I
2
C-bus controller
n Eight programmable I/O pins
n High-speed UART: baud rate up to 460.8 kbit/s
n High-speed I
2
C-bus: 400 kbit/s
n 16-byte TX FIFO
n 16-byte RX FIFO
n Programmable baud rate generator
n 2.3 V and 3.6 V operation
n Sleep mode (power-down)
n UART message format resembles I
2
C-bus transaction format
n I
2
C-bus master functions
n Multi-master capability
n 5 V tolerance on the input pins
n 8 N 1 UART format (8 data bits, no parity bit, 1 stop bit)
n Available in very small TSSOP16 package
3. Applications
n Enable I
2
C-bus master support in a system
n I
2
C-bus instrumentation and control
n Industrial control
n Medical equipment
n Cellular telephones
n Handheld computers
SC18IM700
Master I
2
C-bus controller with UART interface
Rev. 02 — 10 August 2007 Product data sheet