H8S2153 Datasheet, PDF (290/750 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8S Family / H8S/2100 Series

Section 13 Serial Communication Interface (SCI)
13.2 Input/Output Pins
Table 13.1 shows the input/output pins for each SCI channel.
Table 13.1 Pin Configuration
Channel Symbol*
Input/Output Function
1
SCK1
Input/Output Channel 1 clock input/output
RxD1
Input
Channel 1 receive data input
Input/Output
Channel 1 transmit/receive data input/output (when
smart card interface is selected)
TxD1
Output
Channel 1 transmit data output
3
SCK3
Input/Output Channel 3 clock input/output
RxD3
Input
Channel 3 receive data input
Input/Output
Channel 3 transmit/receive data input/output (when
smart card interface is selected)
TxD3
Output
Channel 3 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
modesnormal 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)
• Bit rate register (BRR)
Rev. 2.00 Sep.11, 2008 Page 254 of 710
REJ09B0384-0200