Datasheet

Section 7 Data Transfer Controller [H8S/2138 Group]
Rev. 4.00 Jun 06, 2006 page 168 of 1004
REJ09B0301-0400
Bits 6 to 0—DTC Software Activation Vectors 6 to 0 (DTVEC6 to DTVEC0): These bits
specify a vector number for DTC software activation.
The vector address is H'0400 + (vector number) << 1 (where << 1 indicates a 1-bit left shift). For
example, if DTVEC6 to DTVEC0 = H'10, the vector address is H'0420.
7.2.9 Module Stop Control Register (MSTPCR)
15
MSTP15
0
R/W
Bit
Initial value
Read/Write
14
MSTP14
0
R/W
13
MSTP13
1
R/W
12
MSTP12
1
R/W
11
MSTP11
1
R/W
10
MSTP10
1
R/W
9
MSTP9
1
R/W
8
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, comprising two 8-bit readable/writable registers, performs module stop mode control.
When the MSTP14 bit in MSTPCR is set to 1, the DTC operation stops at the end of the bus cycle
and a transition is made to module stop mode. Note that 1 cannot be written to the MSTP14 bit
when the DTC is being activated. 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.
MSTPCRH Bit 6—Module Stop (MSTP14): Specifies the DTC module stop mode.
MSTPCRH
Bit 6
MSTP14 Description
0 DTC module stop mode is cleared (Initial value)
1 DTC module stop mode is set