Preliminary User’s Manual U17260EJ3V1UD
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CHAPTER 16 SERIAL INTERFACES CSI10 AND CSI11
The
µ
PD78F0531, 78F0532, and 78F0533 incorporate serial interface CSI10, and the
µ
PD78F0534, 78F0535,
78F0536, 78F0537, and 78F0537D incorporate serial interfaces CSI10 and CSI11.
16.1 Functions of Serial Interfaces CSI10 and CSI11
Serial interfaces CSI10 and CSI11 have the following two modes.
•
Operation stop mode
•
3-wire serial I/O mode
(1) Operation stop mode
This mode is used when serial communication is not performed and can enable a reduction in the power
consumption.
For details, see
16.4.1 Operation stop mode
.
(2) 3-wire serial I/O mode (MSB/LSB-first selectable)
This mode is used to communicate 8-bit data using three lines: a serial clock line (SCK1n) and two serial data
lines (SI1n and SO1n).
The processing time of data communication can be shortened in the 3-wire serial I/O mode because transmission
and reception can be simultaneously executed.
In addition, whether 8-bit data is communicated with the MSB or LSB first can be specified, so this interface can
be connected to any device.
The 3-wire serial I/O mode is used for connecting peripheral ICs and display controllers with a clocked serial
interface.
For details, see
16.4.2 3-wire serial I/O mode
.
Remark
n = 0:
µ
PD78F0531, 78F0532, 78F0533
n = 0, 1:
µ
PD78F0534, 78F0535, 78F0536, 78F0537, 78F0537D