HD404618 Datasheet, PDF (28/91 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404618 Series
Reset
Standby mode
Active mode
f _OSC :
f _X:
ø _CPU:
ø _CLK :
ø _PER:
Operating
Operating
Stopped
f _cyc
f _cyc
(TMA3 = 0)
SBY (standby)
Interrupt
Timers A, B, C,
Serial,
INT₀, INT₁
f _OSC :
f _X:
ø _CPU:
ø _CLK :
ø _PER:
Operating
Operating
f _cyc
f _cyc
f _cyc
STOP
Stop mode
(TMA3 = 0)
f _OSC :
f _X:
ø _CPU:
ø _CLK :
ø _PER:
Stopped
Operating
Stopped
Stopped
Stopped
Watch mode
f _OSC :
f _X:
ø _CPU:
ø _CLK :
ø _PER:
Operating
Operating
Stopped
f _SUB
f _cyc
(TMA3 = 1)
SBY (standby)
Interrupt
Timers A, B, C,
f _OSC :
f _X:
ø _CPU:
ø _CLK :
ø _PER:
Operating
Operating
f _cyc
f _SUB
f _cyc
Serial,
INT₀, INT₁
*2
STOP
INT₀ ,
Timer
A^*1
(TMA3 = 1, LSON = 0)
f _OSC :
f _X:
ø _CPU:
ø _CLK :
ø _PER:
Stopped
Operating
Stopped
f_SUB
Stopped
*3
f _OSC: Main oscillation frequency
f _X : Suboscillation frequency
for time-base
f _cyc :
f _SUB :
ø _CPU :
ø _CLK :
ø _PER :
f_OSC /4
f_X /8
System clock
Clock for time-base
Clock for other
peripheral functions
LSON: Low speed on flag
DTON: Direct transfer on flag
Subactive mode
f _OSC :
f _X:
ø _CPU:
ø _CLK :
ø _PER:
Stopped
Operating
f _SUB
f _SUB
f _SUB
STOP
INT₀ ,
Timer
A^*1
STOP/SBY
(LSON = 1) ^*4
(TMA3 = 1, LSON = 1)
f _OSC :
f _X:
ø _CPU:
ø _CLK :
ø _PER:
Stopped
Operating
Stopped
f_SUB
Stopped
Notes: 1. Time-base interrupt
2. STOP/SBY (DTON = 1, LSON = 0)
3. STOP/SBY (DTON = 0, LSON = 0)
4. DTON is not affected
Figure 10 MCU Status Transitions
Table 17 I/O Status in Low-Power Dissipation Modes
D₀–D₉
D₁₀–D ₁₃
R0–R3
Output
Standby Mode, Watch Mode
Retained
—
Retained
Stop Mode
High impedance
—
High impedance
Input
Active Mode, Subactive Mode
Input enabled
Input enabled
Input enabled
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