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HD6432138SW Datasheet(PDF) 451 Page - Renesas Technology Corp

Part # HD6432138SW
Description  Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series
PDF  1061 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6432138SW Datasheet(HTML) 451 Page - Renesas Technology Corp

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Section 15 Serial Communication Interface (SCI, IrDA)
Rev. 4.00 Jun 06, 2006 page 397 of 1004
REJ09B0301-0400
Bits 1 and 0—Clock Select 1 and 0 (CKS1, CKS0): These bits select the clock source for the
baud rate generator. The clock source can be selected from
φ, φ/4, φ/16, and φ/64, according to the
setting of bits CKS1 and CKS0.
For the relation between the clock source, the bit rate register setting, and the baud rate, see
section 15.2.8, Bit Rate Register.
Bit 1
Bit 0
CKS1
CKS0
Description
00
φ clock
(Initial value)
1
φ/4 clock
10
φ/16 clock
1
φ/64 clock
15.2.6
Serial Control Register (SCR)
7
TIE
0
R/W
6
RIE
0
R/W
5
TE
0
R/W
4
RE
0
R/W
3
MPIE
0
R/W
0
CKE0
0
R/W
2
TEIE
0
R/W
1
CKE1
0
R/W
Bit
Initial value
Read/Write
SCR is a register that performs enabling or disabling of SCI transfer operations, serial clock output
in asynchronous mode, and interrupt requests, and selection of the serial clock source.
SCR can be read or written to by the CPU at all times.
SCR is initialized to H'00 by a reset, and in standby mode, watch mode, subactive mode, subsleep
mode, and module stop mode.



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