Datasheet

Section 22 Electrical Characteristics
Rev.7.00 Dec. 24, 2008 Page 664 of 698
REJ09B0074-0700
22.4.1 Clock Timing
Table 22.4 lists the clock timing
Table 22.4 Clock Timing
Condition A: V
CC
= PLL V
CC
= Dr V
CC
= 2.4 V to 3.6 V, Vref = 2.4 V to V
CC
, V
SS
= PLLV
SS
=
Dr V
SS
= 0 V, f = 32.768 kHz, 6 MHz, T
a
= –20°C to +75°C (regular specifications),
T
a
= –40°C to +85°C (wide-range specifications)
Condition B: V
CC
= PLL V
CC
= Dr V
CC
= 2.7 V to 3.6 V, Vref = 2.7 V to V
CC
, V
SS
= PLLV
SS
=
Dr V
SS
= 0 V, f = 32.768 kHz, 6 MHz to 16 MHz, T
a
= –20°C to +75°C (regular
specifications), T
a
= –40°C to +85°C (wide-range specifications)
Condition C: V
CC
= PLL V
CC
= Dr V
CC
= 3.0 V to 3.6 V, Vref = 3.0 V to V
CC
, V
SS
= PLLV
SS
=
Dr V
SS
= 0 V, f = 32.768 kHz, 6 MHz to 24 MHz, T
a
= –20°C to +75°C (regular
specifications), T
a
= –40°C to +85°C (wide-range specifications)
Condition D: V
CC
= PLL V
CC
= Dr V
CC
= 3.0 V to 3.6 V, Vref = 3.0 V to V
CC
, V
SS
= PLLV
SS
=
Dr V
SS
= 0 V, f = 32.768 kHz, 16 MHz to 24 MHz, T
a
= −20°C to +75°C (regular
specifications), T
a
= −40°C to +85°C (wide-range specifications)
Condition A Condition B Condition C Condition D
Item Symbol Min. Max. Min. Max. Min. Max. Min. Max. Unit
Test
Conditions
Clock cycle time t
cyc
166.6 62.5 166.6 41.6 166.6 41.6 62.5 ns
Clock high pulse width t
CH
50 — 20 — 13 — 13 — ns
Clock low pulse width t
CL
50 — 20 — 13 — 13 — ns
Clock rise time t
Cr
— 25 — 10 — 7 — 7 ns
Clock fall time t
Cf
— 25 — 10 — 7 — 7 ns
Oscillation stabilization
time at reset (crystal)
t
OSC1
40 — 20 — 20 — 20 — ms Figure 22.4
Oscillation stabilization
time in software
standby (crystal)
t
OSC2
16 — 8 — 8 — 8 — ms Figures 20.4,
19.2
C
L1
= C
L2
=
10 to 22 pF
16 — 8 — 4 — 4 — ms Figures 20.4,
19.2
C
L1
= C
L2
=
10 to 15 pF