Ac Characteristics - Hitachi H8/3827R Series Hardware Manual

15.2.3

AC Characteristics

Table 15.3 lists the control signal timing, and tables 15.4 lists the serial interface timing of the
H8/3864.
Table 15.3 Control Signal Timing
V = 1.8 V to 5.5 V, AV
CC
(including subactive mode) unless otherwise indicated.
Item Symbol Pins
System clock f
OSC
oscillation
frequency
OSC clock (ø ) t
OSC OSC
cycle time
System clock (ø) t
cyc
cycle time
Subclock oscillation f
W
frequency
Watch clock (ø ) t
W W
cycle time
Subclock (ø ) t
SUB subcyc
cycle time
Instruction cycle
time
Oscillation t
rc
stabilization time
= 1.8 V to 5.5 V, V
CC
Applicable
Min Typ
OSC , OSC 2
1 2
2
2
OSC , OSC 62.5 —
1 2
100
250
2
—
X , X —
1 2
X , X —
1 2
2
2
OSC , OSC —
1 2
—
—
= AV = 0.0 V, T
SS SS
Values
Max Unit
— 16 MHz
— 10
— 4
500 ns
(1000)
— 500
(1000)
— 500
(1000)
— 128 t
OSC
244.1 µs
—
32.768 — kHz
or 38.4
µs
30.5 or —
26.0
— 8 t
W
— — t
cyc
t
subcyc
µs
20 45
0.1 8 ms
— 50 ms
= –20°C to +75°C
a
Reference
Test Condition Figure
*2
V = 4.5 V to 5.5 V
CC
V = 2.7 V to 5.5 V
CC
V = 1.8 V to 5.5 V
CC
V = 4.5 V to 5.5 V Figure 15.1
CC
*2*3
V = 2.7 V to 5.5 V Figure 15.1
CC
*3
V = 1.8 V to 5.5 V
CC
Figure 15.1
*1
Figure 15.9 Figure 15.9
*2
V = 2.2 V to 5.5 V
CC
Figure 15.9 Figure 15.9
V = 2.2 V to 5.5 V
CC
Except the above
365