h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 627
h8s-2649
Manufacturer Part Number
h8s-2649
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2649.pdf
(766 pages)
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Section 21 Power-Down Modes
21.12
Usage Notes
21.12.1 I/O Port Status
The status of the I/O ports is retained in software standby mode and watch mode. When the OPE
bit is set to 1, the address bus and bus control signal outputs are also retained. Therefore, when a
high level is output, the current consumption is not diminished by the amount of current to support
the high level output.
21.12.2 Current Consumption during Oscillation Stabilization Wait Period
The current consumption increases during the oscillation stabilization wait period.
21.12.3 DTC Module Stop Setting
The MSTPA6 bits cannot be set to 1 depending on the DTC operating status. Module stop mode
for the DTC must be specified while the DTC is stopped.
For details, see section 8, Data Transfer Controller (DTC).
21.12.4 On-Chip Peripheral Module Interrupts
Relevant interrupt operations cannot be performed in module stop mode. Consequently, if module
stop mode is entered when an interrupt has been requested, it will not be possible to clear the CPU
interrupt source activation source. Interrupts should therefore be disabled before entering module
stop mode.
21.12.5 Writing to MSTPCR
MSTPCR should only be written to by the CPU.
Rev. 2.00 Dec. 05, 2005 Page 589 of 724
REJ09B0200-0200
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