1. General description
The SC16IS752/SC16IS762 is an I
2
C-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 I
2
C-bus/SPI to RS-232/RS-485 and is fully bidirectional.
The SC16IS762 differs from the SC16IS752 in that it supports SPI clock speeds up to
15 Mbit/s instead of the 4 Mbit/s supported by the SC16IS752, and in that it supports IrDA
SIR up to 1.152 Mbit/s. In all other aspects, the SC16IS762 is functionally and electrically
the same as the SC16IS752.
The SC16IS752/SC16IS762’s 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/SC16IS762 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.
2. Features and benefits
2.1 General features
Dual full-duplex UART
I
2
C-bus or SPI interface selectable
3.3 V or 2.5 V operation
Industrial temperature range: 40 C 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
SC16IS752; SC16IS762
Dual UART with I
2
C-bus/SPI interface, 64 bytes of transmit
and receive FIFOs, IrDA SIR built-in support
Rev. 9 — 22 March 2012 Product data sheet
