SC16IS752 I2C/SPI Bus Interface to UART Module

schnelles zweikanal UART - I2C bus/SPI bus interface

Datenblatt SC16IS752

General description
The SC16IS752 is an I2C-bus/SPI bus interface to a dual-channel high
performance UART offering data rates up to 5 Mbit/s, low operating and sleeping current;
it also provides the application with 8 additional programmable I/O pins. The device
comes in very small HVQFN32 and TSSOP28 packages, which makes it ideally suitable
for hand-held, battery-operated applications. This chip enables seamless protocol
conversion from I2C-bus/SPI to RS-232/RS-485 and is fully bidirectional.
The SC16IS752 internal register set is backward compatible with the widely
used and widely popular 16C450. This allows the software to be easily written or ported
from another platform.
The SC16IS752 also provides additional advanced features such as auto
hardware and software flow control, automatic RS-485 support and software reset. This
allows the software to reset the UART at any moment, independent of the hardware reset
signal.

Features

Dual full-duplex UART
I2C-bus or SPI interface selectable
3.3 V or 2.5 V operation
Industrial temperature range: -40 to  +95°C
64 bytes FIFO (transmitter and receiver)
Fully compatible with industrial standard 16C450 and equivalent
Baud rates up to 5 Mbit/s in 16 clock mode
Auto hardware flow control using RTS/CTS
Auto software flow control with programmable Xon/Xoff characters
Single or double Xon/Xoff characters
Automatic RS-485 support (automatic slave address detection)
Up to eight programmable I/O pins
RS-485 driver direction control via RTS signal
RS-485 driver direction control inversion
Built-in IrDA encoder and decoder supporting IrDA SIR with speeds up to 115.2 kbit/s
SC16IS762 supports IrDA SIR with speeds up to 1.152 Mbit/s1
Software reset
Transmitter and receiver can be enabled/disabled independent of each other
Receive and Transmit FIFO levels
Programmable special character detection
Fully programmable character formatting
   5-bit, 6-bit, 7-bit or 8-bit character
   Even, odd, or no parity
   1, 11⁄2, or 2 stop bits
Line break generation and detection
Internal Loopback mode
Sleep current less than 30 A at 3.3 V
Industrial and commercial temperature ranges
5 V tolerant inputs