13.2.3
AC Characteristics (HD6473644)
Table 13.3 lists the control signal timing, and tables 13.4 and 13.5 list the serial interface timing of
the HD6473644.
Table 13.3 Control Signal Timing
V
= 4.0 V to 5.5 V, V
CC
Item
Symbol
System clock
f
oscillation frequency
OSC clock (φ
)
t
OSC
cycle time
System clock (φ)
t
cycle time
Subclock oscillation
f
frequency
Watch clock (φ
)
t
W
cycle time
Subclock (φ
)
t
SUB
cycle time
Instruction cycle
time
Oscillation
t
stabilization time
(crystal resonator)
Oscillation
t
stabilization time
(ceramic resonator)
Oscillation stabilization
t
time
External clock high
t
width
External clock low
t
width
External clock rise
t
time
External clock fall
t
time
Pin RES low width
t
= 0.0 V, T
= –20°C to +75°C, unless otherwise specified.
SS
a
Applicable
Pins
OSC
, OSC
OSC
1
2
OSC
, OSC
OSC
1
2
cyc
X
, X
W
1
2
X
, X
W
1
2
subcyc
OSC
, OSC
rc
1
2
OSC
, OSC
rc
1
2
X
, X
rc
1
2
OSC
CPH
1
OSC
CPL
1
CPr
CPf
RES
REL
Section 13 Electrical Characteristics
Values
Min Typ
Max
Unit
2
10
MHz
100
1000 ns
2
128
t
OSC
25.6
µs
32.768
kHz
30.5
µs
2
8
t
W
2
t
cyc
t
subcyc
40
ms
60
20
ms
40
2
s
40
ns
40
ns
15
ns
15
ns
10
t
cyc
Rev. 6.00 Sep 12, 2006 page 367 of 526
Reference
Test Condition
Figure
V
= 2.7 V to 5.5 V
CC
= 2.7 V to 5.5 V * 1
V
CC
Figure 13.1
= 2.7 V to 5.5 V * 1
V
CC
V
= 2.7 V to 5.5 V
CC
V
= 2.7 V to 5.5 V
CC
= 2.7 V to 5.5 V * 2
V
CC
V
= 2.7 V to 5.5 V
CC
V
= 2.7 V to 5.5 V
CC
V
= 2.7 V to 5.5 V
CC
V
= 2.7 V to 5.5 V
CC
V
= 2.7 V to 5.5 V Figure 13.1
CC
V
= 2.7 V to 5.5 V
CC
V
= 2.7 V to 5.5 V
CC
V
= 2.7 V to 5.5 V
CC
V
= 2.7 V to 5.5 V Figure 13.2
CC
REJ09B0326-0600