Datasheet

Section 16 I
2
C Bus Interface [H8S/2138 Group Option]
Rev. 4.00 Jun 06, 2006 page 484 of 1004
REJ09B0301-0400
16.2.9 Module Stop Control Register (MSTPCR)
7
MSTP15
0
R/W
Bit
Initial value
Read/Write
6
MSTP14
0
R/W
5
MSTP13
1
R/W
4
MSTP12
1
R/W
3
MSTP11
1
R/W
2
MSTP10
1
R/W
1
MSTP9
1
R/W
0
MSTP8
1
R/W
7
MSTP7
1
R/W
6
MSTP6
1
R/W
5
MSTP5
1
R/W
4
MSTP4
1
R/W
3
MSTP3
1
R/W
2
MSTP2
1
R/W
1
MSTP1
1
R/W
0
MSTP0
1
R/W
MSTPCRH MSTPCRL
MSTPCR comprises two 8-bit readable/writable registers, and is used to perform module stop
mode control.
When the MSTP4 or MSTP3 bit is set to 1, operation of the corresponding IIC channel is halted at
the end of the bus cycle, and a transition is made to module stop mode. For details, see section
24.5, Module Stop Mode.
MSTPCR is initialized to H'3FFF by a reset and in hardware standby mode. It is not initialized in
software standby mode.
MSTPCRL Bit 4—Module Stop (MSTP4): Specifies IIC channel 0 module stop mode.
MSTPCRL
Bit 4
MSTP4 Description
0 IIC channel 0 module stop mode is cleared
1 IIC channel 0 module stop mode is set (Initial value)
MSTPCRL Bit 3—Module Stop (MSTP3): Specifies IIC channel 1 module stop mode.
MSTPCRL
Bit 3
MSTP3 Description
0 IIC channel 1 module stop mode is cleared
1 IIC channel 1 module stop mode is set (Initial value)