HD404318 Datasheet, PDF (20/68 Pages) Hitachi Semiconductor – 4-bit HMCS400-series microcomputer

HD404318 Series
Operating Modes
The MCU has three operating modes as shown in table 3. Transitions between operating modes are shown
in figure 11.
Table 3 Operations in Each Operating Mode
Function
Active Mode
System oscillator
OP
CPU
OP
RAM
OP
Timer A
OP
Timers B, C
OP
Serial interface
OP
A/D
OP
I/O
OP
Note: OP implies in operation
Standby Mode
OP
Retained
Retained
OP
OP
OP
OP
Retained
Stop Mode
Stopped
Reset
Retained
Reset
Reset
Reset
Reset
Reset
18