HD6433935 Hitachi, HD6433935 Datasheet - Page 118

• Manufacturer Part Number: HD6433935
• Description: 8-Bit MICROCONTROLLER
• Manufacturer: Hitachi

Table 5-4
STS2
0
0
0
0
1
1
1
1
STS2 = 1, STS1 = 0 and STS0 = 1 are recommended. Other values can be set, but with other
settings, operation may start before the standby time is over.
5.3.4
When a SLEEP instruction is executed in active (high-speed) mode or active (medium-speed)
mode while bit SSBY is set to 1 and bit LSON is cleared to 0 in SYSCR1, and bit TMA3 is
cleared to 0 in TMA, a transition is made to standby mode. At the same time, pins go to the high-
impedance state (except pins for which the pull-up MOS is designated as on). Figure 5-2 shows
the timing in this case.
106
Internal data bus
When an external clock is used
Pins
ø
Standby Mode Transition and Pin States
STS1
0
0
1
1
0
0
1
1
Clock Frequency and Settling Time (times are in ms)
Active (high-speed) mode or active (medium-speed) mode
Figure 5-2 Standby Mode Transition and Pin States
STS0
0
1
0
1
0
1
0
1
SLEEP instruction fetch
Waiting Time
8,192 states
16,384 states
1,024 states
2,048 states
4,096 states
2 states (not available)
8 states
16 states
Port output
SLEEP instruction execution
Fetch of next instruction
5 MHz
1.6384
3.2768
0.2048
0.4096
0.8192
0.0004
0.0016
0.0032
Internal processing
2 MHz
4.096
8.192
0.512
1.024
2.048
0.001
0.004
0.008
High-impedance
Standby mode
1 MHz
8.192
16.384
1.024
2.048
4.096
0.002
0.008
0.016