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3. Low-Power States (Sleep, Software Standby, Module Standby, U Standby, and R Standby)
For low-power consumption, the SH7362 has sleep, software standby, module standby, U
standby, and R standby states.
The sleep, software standby, U Standby, and R Standby states are switched using the SLEEP
instruction. When the emulator is used, the sleep and software standby states can be cleared
with either the normal clearing function or with the [STOP] button, and a break will occur.
The power for some areas is turned off in U standby or R standby state and turned on in using
the emulator.
Note: The memory must not be accessed or modified in low-power state using the SLEEP
instruction.
4. Reset Signal (/RESETA)
The SH7362 reset signal is only valid during emulation started with clicking the GO or STEP-
type button.
If the reset signal is enabled on the user system in command input wait state, it is not sent to
the SH7362.
Note: Do not break the user program when the /RESETA signal is being low or the bus-release
request or wait control signal is being active. A TIMEOUT error will occur. If the bus-
release request or wait control signal is fixed to active during break, a TIMEOUT error
will occur at memory access.
5. Direct Memory Access Controller (DMAC)
The DMAC operates even when the emulator is used. When a data transfer request is
generated, the DMAC executes DMA transfer.
6. Memory Access during User Program Execution
When a memory is accessed from the memory window, etc. during user program execution,
the user program is resumed after it has stopped in the emulator to access the memory.
Therefore, realtime emulation cannot be performed.
The stopping time of the user program is as follows:
Environment:
Host computer: 800 MHz (Pentium® III)
JTAG clock: 10 MHz (TCK clock)
When a one-byte memory is read from the command-line window, the stopping time will be
about 42 ms.