HD404459 Datasheet, PDF (31/122 Pages) Renesas Technology Corp – 4-bit HMCS400-series microcomputers

HD404459 Series
Standby mode
f_OSC:
f_X:
ø _CPU:
ø _CLK:
ø _PER:
Oscillate
Oscillate
Stop
f_cyc
f_cyc
Reset by
RESET input or
by watchdog timer
RAME = 0
RAME = 1
RESET1 RESET2
STOPC
SBY
Interrupt
Active
mode
f_OSC:
f_X:
ø _CPU:
ø _CLK:
ø _PER:
Oscillate
Oscillate
f_cyc
f_cyc
f_cyc
(TMA3 = 0)
STOP
STOP
Stop mode
(TMA3 = 0, SSR13 = 0)
f_OSC:
f_X:
ø _CPU:
ø _CLK:
ø _PER:
Stop
Oscillate
Stop
Stop
Stop
(TMA3 = 0, SSR13 = 1)
f_OSC:
f_X:
ø _CPU:
ø _CLK:
ø _PER:
Stop
Stop
Stop
Stop
Stop
f_OSC:
f_X:
ø _CPU:
ø _CLK:
ø _PER:
Oscillate
Oscillate
Stop
f_W
f_cyc
SBY
Interrupt
Watch mode
f_OSC:
f_X:
ø _CPU:
ø _CLK:
ø _PER:
(TMA3 = 1)
Oscillate
Oscillate
f_cyc
f_W
f_cyc
STOP
INT₀, WU₀ to
WU₇, timer A^*1
(TMA3 = 1, LSON = 0)
f_OSC:
f_X:
ø _CPU:
ø _CLK:
ø _PER:
Stop
Oscillate
Stop
f_W
Stop
f_OSC: Main oscillation frequency
f_X:
Suboscillation frequency
for time-base
f_cyc: f_OSC/4, f_OSC/8, f_OSC/16,
f_OSC/32 (software
selectable)
f_W:
f_X/8
f_SUB: f_X/8 or f_X/4
(software selectable)
ø _CPU:
ø _CLK:
ø _PER:
System clock
Clock for time-base
Clock for other
peripheral functions
LSON: Low speed on flag
DTON: Direct transfer on flag
Subactive ^*2
mode
f_OSC:
f_X:
ø _CPU:
ø _CLK:
ø _PER:
Stop
Oscillate
f_SUB
f_W
f_SUB
*3
STOP
(TMA3 = 1, LSON = 1)
*4
INT₀, WU₀ to
WU₇, timer A^*1
f_OSC:
f_X:
ø _CPU:
ø _CLK:
ø _PER:
Stop
Oscillate
Stop
f_W
Stop
Notes: 1. Interrupt source
2. STOP/SBY (DTON = 1, LSON = 0)
3. STOP/SBY (DTON = 0, LSON = 0)
4. STOP/SBY (DTON = Don’t care, LSON = 1)
Figure 14 MCU Status Transitions
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