Datasheet

Table Of Contents
Section 13 Serial Communication Interface
Page 386 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
13.2 Input/Output Pins
Table 13.1 shows the serial pins for each SCI channel.
Table 13.1 Pin Configuration
Channel Pin Name
*
I/O Function
SCK0 I/O SCI_0 clock input/output
RxD0 Input SCI_0 receive data input
0
TxD0 Output SCI_0 transmit data output
SCK1 I/O SCI_1 clock input/output
RxD1 Input SCI_1 receive data input
1
TxD1 Output SCI_1 transmit data output
SCK2 I/O SCI_2 clock input/output 2
RxD2 Input SCI_2 receive data input
TxD2 Output SCI_2 transmit data output
Note: * Pin names SCK, RxD, and TxD are used in the text for all channels, omitting the
channel designation.
13.3 Register Descriptions
The SCI has the following registers for each channel. Some bits in the serial mode register (SMR),
serial status register (SSR), and serial control register (SCR) have different functions in different
modesnormal serial communication interface mode and smart card interface mode; therefore,
the bits are described separately for each mode in the corresponding register sections.
Receive shift register (RSR)
Receive data register (RDR)
Transmit data register (TDR)
Transmit shift register (TSR)
Serial mode register (SMR)
Serial control register (SCR)
Serial status register (SSR)
Smart card mode register (SCMR)
Serial extended mode register (SEMR) (only for channel 0 in H8S/2215)
Serial extended mode register A_0 (SEMRA_0) (only for channel 0 in H8S/2215R,
H8S/2215T and H8S/2215C)