Datasheet

Section 22 Electrical Characteristics
Rev.6.00 Sep. 27, 2007 Page 941 of 1268
REJ09B0220-0600
(1) Clock Timing
Table 22.5 Clock Timing
Condition A: V
CC
= 2.7 V to 3.6 V, AV
CC
= 2.7 V to 3.6 V, V
ref
= 2.7 V to AV
CC
, V
SS
= AV
SS
=
0 V, φ = 2 MHz to 20 MHz, T
a
= –20°C to 75°C (regular specifications),
T
a
= –40°C to 85°C (wide-range specifications)
Condition B: V
CC
= 3.0 V to 3.6 V, AV
CC
= 3.0 V to 3.6 V, V
ref
= 3.0 V to AV
CC
, V
SS
= AV
SS
=
0 V, φ = 2 MHz to 25 MHz, T
a
= –20°C to 75°C (regular specifications),
T
a
= –40°C to 85°C (wide-range specifications)
Condition A Condition B
Item Symbol Min Max Min Max Unit
Test
Conditions
Clock cycle time t
cyc
50 500 40 500 ns Figure 22.2
Clock pulse high width t
CH
20 — 15 — ns
Clock pulse low width t
CL
20 — 15 — ns
Clock rise time t
Cr
— 5 — 5 ns
Clock fall time t
Cf
— 5 — 5 ns
Reset oscillation stabilization
time (crystal)
t
OSC1
10 — 10 — ms Figure 22.3
Software standby oscillation
stabilization time (crystal)
t
OSC2
10 — 10 — ms
External clock output
stabilization delay time
t
DEXT
500 — 500 — μs Figure 22.3