hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 114

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hd66100

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

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Bits 6 to 4: Standby timer select 2 to 0 (STS2 to STS0)
These bits designate the time the CPU and peripheral modules wait for stable clock operation after
exiting from standby mode or watch mode to active mode due to an interrupt. The designation
should be made according to the operating frequency so that the waiting time is at least equal to
the oscillation settling time.
Bit 6
STS2
0
0
0
0
1
1
1
1
Note: In the case that external clock is input, set up the “Standby timer select” selection to
Bit 3: Low speed on flag (LSON)
This bit chooses the system clock (ø) or subclock (ø
mode is cleared. The resulting operation mode depends on the combination of other control bits
and interrupt input.
Bit 3
LSON
0
1
Bits 2: Reserved bits
Bit 2 is reserved: it is always read as 1 and cannot be modified.
External clock mode before Mode Transition. Also, do not set up to external clock mode, in
the case that it does not use external clock.
Description
The CPU operates on the system clock (ø)
The CPU operates on the subclock (øSUB)
Bit 5
STS1
0
0
1
1
0
0
1
1
Bit 4
STS0
0
1
0
1
0
1
0
1
Description
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
SUB
) as the CPU operating clock when watch
(External clock mode)
(initial value)
(initial value)
99

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