HD6412350 Hitachi, HD6412350 Datasheet - Page 697

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

20.8
Output of the ø clock can be controlled by means of the PSTOP bit in SCKCR, and DDR for the
corresponding port. When the PSTOP bit is set to 1, the ø clock stops at the end of the bus cycle,
and ø output goes high. ø clock output is enabled when the PSTOP bit is cleared to 0. When DDR
for the corresponding port is cleared to 0, ø clock output is disabled and input port mode is set.
Table 20-5 shows the state of the ø pin in each processing state.
Table 20-5 ø Pin State in Each Processing State
DDR
PSTOP
Hardware standby mode
Software standby mode
Sleep mode
Normal operating state
Oscillator
RES
STBY
ø Clock Output Disabling Function
Figure 20-3 Hardware Standby Mode Timing (Example)
0
—
High impedance
High impedance
High impedance
High impedance
1
0
Fixed high
ø output
ø output
Oscillation
stabilization
time
1
Fixed high
Fixed high
exception
handling
Reset
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