Datasheet

78K0/Kx2-L CHAPTER 16 SERIAL INTERFACES CSI10 AND CSI11
R01UH0028EJ0400 Rev.4.00 562
Sep 27, 2010
CHAPTER 16 SERIAL INTERFACES CSI10 AND CSI11
78K0/KY2-L
(
μ PD78F055x)
78K0/KA2-L
( μ PD78F056x)
78K0/KB2-L
( μ PD78F057x)
78K0/KC2-L
( μ PD78F058x)
Item
16 pins 20 pins 25, 32 pins 30 pins 40, 44, 48 pins
Serial interface CSI10
− − − √ √
Serial interface CSI11
− − √ − √
Remark √: Mounted, −: Not mounted
16.1 Functions of Serial Interfaces CSI10 and CSI11
Serial interfaces CSI10 and CSI11 have the following two modes.
(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, refer to 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, refer to 16.4.2 3-wire serial I/O mode.
Remark 78K0/KA2-L (25 pins, 32 pins): n = 1
78K0/KB2-L: n = 0
78K0/KC2-L: n = 0, 1
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