Renesas Hitachi H8S/2194 Series Hardware Manual page 96

Program-halted state
Standby
mode
Interrupt
1
SLEEP
instruction
b
Watch
mode
Conditions for mode transition (1)
Flag LSON SSBY TMA3 DTON
a
0 1
b 1
*
c
0 1
1 1
d
e
0 0
1 0
f
g
SCK1 to 0 = 0
SCK1 to 0 ≠ 0 (either 1 bit = 0)
h
Note: * Don't care
Reset state
Program execution state
SLEEP
instruction a
Active
(high-speed)
Interrupt 1
mode
SLEEP
instruction
g
a
Active
Interrupt
2
(medium-speed)
mode
SLEEP
b
instruction
SLEEP
instruction
Interrupt 2
c
SLEEP
b
instruction
Subactive
mode
Interrupt 2
0
*
1 0
1 1
1 1
* *
1
*
Figure 4.1 Mode Transitions
SLEEP
e
instruction
Interrupt 3
SLEEP
instruction
h
d
SLEEP
instruction
c
SLEEP
instruction e
Interrupt 3
SLEEP
instruction
d
SLEEP
instruction 1
Interrupt 4
Power-down mode
Conditions for mode transition (2)
Interruption factor
to
1 NMI, IRQ0 1
to
2 NMI, IRQ0 1, Timer A interruption
3 All interruption (excluding servo system)
to
4 NMI, IRQ0 5, Timer A interruption
Note: When a transition is made between
modes by means of an interrupt,
transition cannot be made on interrupt
source generation alone. Ensure that
interrupt handling is performed after
accepting the interrupt request
Rev. 2.0, 11/00, page 69 of 1037
Program-halted state
Sleep
(high-speed)
mode
Sleep
(medium-speed)
mode
Subsleep
mode