Section 18 Power-Down States
Rev.2.00 Jun. 28, 2007 Page 586 of 666
REJ09B0311-0200
18.11 Usage
Notes
18.11.1 I/O
Port
Status
In software standby mode, the I/O port states are retained. Therefore, there is no reduction in
current consumption for the output current when a high-level signal is output.
18.11.2 Current
Consumption during Oscillation Settling Standby Period
Current consumption increases during the oscillation settling standby period.
18.11.3 DTC
Module
Stop
Depending on the operating state of the DTC, bit MSTPA12 may not be set to 1. Setting of the
DTC module stop state should be carried out only when the DTC is not activated.
For details, see section 7, Data Transfer Controller (DTC).
18.11.4 On-Chip Peripheral Module Interrupts
Relevant interrupt operations cannot be performed in the module stop state. Consequently, if
module stop state is entered when an interrupt has been requested, it will not be possible to clear
the CPU interrupt source or the DTC activation source. Interrupts should therefore be disabled
before entering the module stop state.
18.11.5 Writing to MSTPCRA, MSTPCRB, and MSTPCRC
MSTPCRA, MSTPCRB, and MSTPCRC should only be written to by the CPU.
Содержание H8SX/1650
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