h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 442

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Serial Communication Interface (SCI, IrDA)
Rev. 4.00 Jun 06, 2006 page 388 of 1004
REJ09B0301-0400
Full-duplex communication capability
LSB-first or MSB-first transfer can be selected
Note: * LSB-first transfer is used in the examples in this section.
On-chip baud rate generator allows any bit rate to be selected
Choice of serial clock source: internal clock from baud rate generator or external clock from
SCK pin
Capability of transmit and receive clock output
Four interrupt sources
One serial data transfer format
Data length: 8 bits
Receive error detection: Overrun errors detected
The transmitter and receiver are mutually independent, enabling transmission and reception
to be executed simultaneously
Double-buffering is used in both the transmitter and the receiver, enabling continuous
transmission and continuous reception of serial data
This selection can be made regardless of the communication mode (with the exception of
7-bit data transfer in asynchronous mode) *
The P86/SCK1 and P42/SCK2 pins are CMOS type outputs
The P52/SCK0 pin is an NMOS push-pull type output in the H8S/2138 Group and a
CMOS output in the H8S/2134 Group (When the P52/SCK0 pin is used as an output in the
H8S/2138 Group, external pull-up resistor must be connected in order to output high level)
Four interrupt sources (transmit-data-empty, transmit-end, receive-data-full, and receive
error) that can issue requests independently
The transmit-data-empty interrupt and receive-data-full interrupt can activate the data
transfer controller (DTC) to execute data transfer