h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 467
h8s-2138
Manufacturer Part Number
h8s-2138
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2138.pdf
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Table 15.7 Maximum Bit Rate with External Clock Input (Synchronous Mode)
15.2.9
SCMR is an 8-bit readable/writable register used to select SCI functions.
SCMR is initialized to H'F2 by a reset, and in standby mode, watch mode, subactive mode,
subsleep mode, and module stop mode.
Bits 7 to 4—Reserved: These bits cannot be modified and are always read as 1.
Bit 3—Data Transfer Direction (SDIR): Selects the serial/parallel conversion format.
2
4
6
8
10
12
14
16
18
20
Bit 3
SDIR
0
1
(MHz)
Bit
Initial value
Read/Write
Serial Interface Mode Register (SCMR)
Description
TDR contents are transmitted LSB-first
Receive data is stored in RDR LSB-first
TDR contents are transmitted MSB-first
Receive data is stored in RDR MSB-first
—
—
7
1
External Input Clock (MHz)
0.3333
0.6667
1.0000
1.3333
1.6667
2.0000
2.3333
2.6667
3.0000
3.3333
—
—
6
1
—
—
5
1
Section 15 Serial Communication Interface (SCI, IrDA)
—
—
4
1
Rev. 4.00 Jun 06, 2006 page 413 of 1004
SDIR
R/W
3
0
Maximum Bit Rate (bits/s)
333333.3
666666.7
1000000.0
1333333.3
1666666.7
2000000.0
2333333.3
2666666.7
3000000.0
3333333.3
SINV
R/W
2
0
—
—
REJ09B0301-0400
1
1
(Initial value)
SMIF
R/W
0
0
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