HD6413007F20 Datasheet, PDF (92/798 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

3. MCU Operating Modes
Bits 6 to 4⎯Standby Timer Select 2 to 0 (STS2 to STS0): These bits select the length of time
the CPU and on-chip supporting modules wait for the internal clock oscillator to settle when
software standby mode is exited by an external interrupt.
When using a crystal oscillator, set these bits so that the waiting time will be at least 7 ms at the
system clock rate.
For further information about waiting time selection, see section 19.4.3, Selection of Waiting
Time for Exit from Software Standby Mode.
Bit 6
STS2
0
1
Bit 5
STS1
0
1
0
1
Bit 4
STS0
0
1
0
1
0
1
0
1
Description
Waiting time = 8,192 states
Waiting time = 16,384 states
Waiting time = 32,768 states
Waiting time = 65,536 states
Waiting time = 131,072 states
Waiting time = 262,144 states
Waiting time = 1,024 states
Illegal setting
(Initial value)
Bit 3⎯User Bit Enable (UE): Selects whether to use the UI bit in the condition code register as a
user bit or an interrupt mask bit.
Bit 3
UE
0
1
Description
UI bit in CCR is used as an interrupt mask bit
UI bit in CCR is used as a user bit
(Initial value)
Bit 2⎯NMI Edge Select (NMIEG): Selects the valid edge of the NMI input.
Bit 2
NMIEG
0
1
Description
An interrupt is requested at the falling edge of NMI
An interrupt is requested at the rising edge of NMI
(Initial value)
Rev.5.00 Sep. 12, 2007 Page 62 of 764
REJ09B0396-0500