Ac Characteristics - Renesas H8 Series Hardware Manual

16.8.3

AC Characteristics

Table 16.22 lists the control signal timing and table 16.23 lists the serial interface timing.
Table 16.22 Control Signal Timing
V = 2.7 V to 5.5 V, AV
CC
Item Symbol
System clock f
OSC
oscillation
frequency
OSC clock (φ )
t
OSC
OSC
cycle time
System clock (φ) t
cyc
cycle time
Subclock oscillation f
W
frequency
Watch clock (φ ) t
W W
cycle time
t
Subclock (φ )
subcyc
SUB
cycle time
Instruction cycle
time
Oscillation t
rc
stabilization time
t
rc
External clock high t
CPH
width
t
External clock low
CPL
width
External clock rise t
CPr
time
External clock fall t
CPf
time
pin low t
R E S
REL
width
= 2.7 V to 5.5 V, V
CC
Applicable
Pins Min
OSC , OSC 2.0
1 2
0.7
OSC , OSC 50.0
1 2
500
2
—
X , X —
1 2
X , X —
1 2
2
2
OSC , —
1
OSC
2
X , X —
1 2
OSC 20
1
OSC 20
1
OSC —
1
OSC —
1
10
R E S
Section 16 Electrical Characteristics
= AV = 0.0 V, unless otherwise specified
SS SS
Values
Typ Max Unit
— 20.0 MHz
— 2.0
— 500 ns
— 1429
— 128 t
OSC
— 182 µs
32.768 — kHz
30.5 — µs
— 8 t
W
— — t
cyc
t
subcyc
— 20 ms
— 2.0 s
— — ns
— — ns
— 5 ns
— 5 ns
— — t
cyc
Rev. 7.00 Mar 10, 2005 page 519 of 652
Reference
Test Condition Figure
2
*
On-chip oscillator
selected
Figure 16.1
On-chip oscillator
selected
Figure 16.1
1
*
Figure 16.1
Figure 16.1
Figure 16.1
Figure 16.1
Figure 16.2
REJ09B0042-0700