h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 465

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Bit
7
6, 5
4
Bit Name
SSE
—
ABCS
Initial Value
0
All 0
0
Section 16 Serial Communication Interface (SCI, IrDA, and CRC)
R/W
R/W
R
R/W
Description
SCI Select Enable
Enables/disables the external pins to select the SCI
functions when the external clock is supplied in
clocked synchronous mode.
0: Disables the external pins to select the SCI
1: Enables the external pins to select the SCI
Reserved
These bits are always read as 0 and cannot be
modified.
Asynchronous Mode Basic Clock Select
Specifies the basic clock for a 1-bit cycle in
asynchronous mode.
This bit is valid only in asynchronous mode (C/A bit in
SMR is 0).
0: The basic clock has a frequency 16 times the
1: The basic clock has a frequency 8 times the
functions (normal)
functions
transfer clock frequency (normal operation)
transfer clock frequency (double-speed operation)
SCI_0
SSE0I pin input = 0 (selected state): SCI_0
operates normally
SSE0I pin input = 1 (non-selected state): SCI_0
halts operation
(TxD0 = high-impedance state, SCK0 = fixed to
high)
SCI_2
SSE2I pin input = 0 (selected state): SCI_2
operates normally
SSE2I pin input = 1 (non-selected state): SCI_2
halts operation
(TxD2 = high-impedance state, SCK2 = fixed to
high)
Rev. 3.00 Jan 25, 2006 page 413 of 872
REJ09B0286-0300