HD404328H View Datasheet(PDF) - Hitachi -> Renesas Electronics
Part Name
Description
Manufacturer
HD404328H Datasheet PDF : 94 Pages
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HD404328 Series
Operating Modes
The MCU has five operating modes that are specified by how the clock is used. The functions available in
each mode are listed in table 19, and operations are shown in table 20. Transitions between operating
modes are shown in figure 10.
Table 19 Functions Available in Each Operating Mode
Mode Name
Active
Standby
Stop
Watch
Subactive*4
Activation method
RESET
cancellation,
interrupt
request
SBY
instruction
TMA3 = 0
STOP
instruction
TMA3 = 1
STOP
instruction
INT0 or timer
A interrupt
request from
watch mode
Status
System
OP
oscillator
OP
Stopped
Stopped
Stopped
Subsystem OP
OP
*1 OP
OP
OP
oscillator
Instruction
OP
execution
(øCPU)
Interrupt
OP
function
interrupt (øPER)
Clock function OP
interrupt (øCLK)
RAM
OP
Stopped
Stopped
Stopped
OP
OP
Stopped
Stopped
*5OP
OP
Retained
Stopped
Retained
*2 OP
Retained
*2OP
OP
Registers/flags OP
Retained
Reset*6
Retained
Retained/
operating
I/O
OP
Retained
Reset*3
Retained
OP
Cancellation method
RESET input, RESET input
STOP/SBY interrupt
instruction request
RESET input
RESET input,
INT0 or timer
A interrupt
request
RESET input,
STOP/SBY
instruction
Notes: OP: indicates in operation
1. To reduce current dissipation, stop all oscillation in external circuits.
2. Refer to the Interrupt Frame section for details.
3. Output pins are at high impedance.
4. Subactive mode is an optional function; specify it on the function option list.
5. The A/D converter does not operate.
6. Port mode register B retains the contents it had in active mode.
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