Section 10 Serial Communication Interface; Overview - Hitachi H8/3937 Series Hardware Manual

Section 10 Serial Communication Interface

10.1

Overview

The H8/3937 Series and H8/3937R Series are provided with two serial communication interface
(SCI) channels plus one SCI channel for on-chip FLEX™ decoder interfacing.
The functions of the three SCI channels are summarized in table 10-1.
Table 10-1 Overview of SCI Functions
SCI Name Functions
SCI1 Synchronous serial transfer functions
• Choice of transfer data length (8 or 16
(Internal
function) bits)
• Continuous clock output function
SCI31, Synchronous serial transfer functions
• 8-bit transfer data length
SCI32
• Transmission/reception/simultaneous
transmission and reception
Asynchronous serial transfer functions
• Multiprocessor communication function
• Choice of transfer data length (5 or 7 or 8
bits)
• Choice of stop bit length (1 or 2 bits)
• Parity addition function
Features
• Choice of 8 internal clocks (ø/1024 to
ø/4, ø /4) or external clock
W
• Interrupt generated on completion of
transfer
• On-chip baud rate generator
• Receive error detection
• Break detection
• Interrupt generated on completion of
transfer or in case of error
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