Section 22 Electrical Characteristics
22.2.3
AC Characteristics
Table 22.3 AC Characteristics
V
CC = 4.5 to 5.5 V, VSS = 0.0 V, Ta = -20 to +75°C/-40 to +85°C, unless otherwise indicated.
Values
Applicable
Symbol Pins
Reference
Unit Figure
Item
Test Condition
Min.
Typ.
Max.
1
fOSC
OSC1, OSC2
4.0
—
20.0
MHz
*
System clock
oscillation
frequency
2
tcyc
1
—
—
64
tOSC
µs
*
System clock (φ)
cycle time
—
—
12.8
Subclock
oscillation
frequency
fW
X1, X2
X1, X2
32.768 —
kHz
Watch clock (φW)
cycle time
tW
—
2
30.5
—
—
µs
tW
2
Subclock (φSUB
)
tsubcyc
8
*
cycle time
Instruction cycle
time
2
—
—
tcyc
tsubcyc
Oscillation
stabilization time
(crystal resonator)
trc
trc
trc
OSC1,
OSC2
—
—
10.0
ms
ms
µs
Oscillation
stabilization time
(ceramic resonator)
OSC1,
OSC2
—
—
—
—
5.0
Oscillation
500
stabilization time
(on-chip oscillator)
Oscillation
stabilization time
trcx
X1, X2
OSC1
—
—
—
2.0
—
s
tCPH
20.0
ns
Figure 22.1
External clock high
width
tCPL
OSC1
OSC1
20.0
—
—
ns
ns
External clock low
width
tCPr
—
—
—
—
—
—
—
—
10.0
15.0
10.0
15.0
External clock rise
time
tCPf
OSC1
ns
External clock fall
time
Rev. 3.00 Sep. 10, 2007 Page 425 of 528
REJ09B0216-0300
RENESAS [ RENESAS TECHNOLOGY CORP ]
