hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 459

• Manufacturer Part Number: hd66100
• Description: H8/3867 Series
• Manufacturer: Renesas Electronics Corporation.

SYSCR1—System control register 1
Bit
Initial value
Read/Write
444
SSBY
R/W
Software standby
0 • When a SLEEP instruction is executed in active mode, a transition is
1
7
0
• When a SLEEP instruction is executed in subactive mode, a transition
• When a SLEEP instruction is executed in active mode, a transition is
• When a SLEEP instruction is executed in subactive mode, a transition
made to sleep mode
is made to subsleep mode
made to standby mode or watch mode
is made to watch mode
STS2
R/W
6
0
STS1
R/W
Standby timer select 2 to 0
0
1
5
0
0 0
1 0
0 0
1 0
1
1
1
1
Low speed on flag
STS0
R/W
0 The CPU operates on the system clock (ø)
1 The CPU operates on the subclock (ø
Wait time = 8,192 states
Wait time = 16,384 states
Wait time = 32,768 states
Wait time = 65,536 states
Wait time = 131,072 states
Wait time = 2 states
Wait time = 8 states
Wait time = 16 states
4
0
LSON
R/W
3
0
H'F0
Active (medium-speed)
mode clock select
—
—
2
1
0
1
0
1
0
1
ø
ø
ø
ø
osc
osc
osc
osc
MA1
R/W
1
1
/128
/16
/32
/64
System control
MA0
R/W
SUB
0
1
)