Renesas H8/3847R Series Hardware Manual page 409

8-bit single-chip microcomputer super low power
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9. Clock Stop Register 1 (CKSTPR1)
Bit
7
S1CKSTP
Initial value
1
R/W
Read/Write
CKSTPR1 is an 8-bit read/write register that performs module standby mode control for peripheral
modules. Only the bits relating to SCI3 are described here. For details of the other bits, see the
sections on the relevant modules.
Bit 6: SCI3-1 module standby mode control (S31CKSTP)
Bit 6 controls setting and clearing of module standby mode for SCI31.
S31CKSTP
Description
0
SCI3-1 is set to module standby mode*
1
SCI3-1 module standby mode is cleared
Note:
* Setting to module standby mode resets all the registers in SCI31.
Bit 5: SCI3-2 module standby mode control (S32CKSTP)
Bit 5 controls setting and clearing of module standby mode for SCI32.
S32CKSTP
Description
0
SCI3-2 is set to module standby mode*
1
SCI3-2 module standby mode is cleared
Note:
* Setting to module standby mode resets all the registers in SCI32.
10. Serial Port Control Register (SPCR)
Bit
7
Initial value
1
Read/Write
SPCR is an 8-bit readable/writable register that performs RXD
input/output data inversion switching. SPCR is initialized to H'C0 by a reset.
6
5
S31CKSTP S32CKSTP ADCKSTP TGCKSTP
1
1
R/W
R/W
6
5
SPC32
1
0
R/W
Section 10 Serial Communication Interface
4
3
TFCKSTP TCCKSTP TACKSTP
1
1
R/W
R/W
4
3
SPC31
SCINV3
SCINV2
0
0
R/W
R/W
, RXD
31
Rev. 6.00 Aug 04, 2006 page 371 of 680
2
1
1
1
R/W
R/W
R/W
(initial value)
(initial value)
2
1
SCINV1
SCINV0
0
0
R/W
R/W
R/W
, TXD
, and TXD
32
31
REJ09B0145-0600
0
1
0
0
pin
32

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