SH7280 Datasheet, PDF (1627/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 31 Electrical Characteristics
31.3.1 Clock Timing
Table 31.5 Clock Timing
Conditions: V_CC = 3.0 to 5.5 V, AV_CC = AVREF = 4.5 to 5.5 V,
V_SS = PLLV_SS = AVREFVSS = AV_SS = 0 V,
Ta = −20°C to +85°C (Consumer specifications),
Ta = −40°C to +85°C (Industrial specifications)
Item
EXTAL clock input frequency
EXTAL clock input cycle time
EXTAL clock input pulse low width
EXTAL clock input pulse high width
EXTAL clock input rise time
EXTAL clock input fall time
CK clock output frequency
CK clock output cycle time
CK clock output pulse low width
CK clock output pulse high width
CK clock output rise time
CK clock output fall time
Power-on oscillation setting time
Oscillation settling time on return from
standby 1
Oscillation settling time on return from
standby 2
USB clock power-on oscillation setting time
USB clock input frequency
USB clock input cycle time
Symbol Min.
f_EX
10
t_EXcyc
80
t
20
EXL
t
20
EXH
t
—
EXr
t
—
EXf
f_OP
10
t
20
cyc
t_CKOL
4
t_CKOH
4
t_CKOr
—
t
—
CKOf
t
10
OSC1
t
10
OSC2
t_OSC3
10
t_OSC4
f_USB
f_USBcyc
8
48
20.8
Max.
12.5
100
—
—
5
5
50
100
—
—
3
3
—
—
—
—
Unit
MHz
ns
ns
ns
ns
ns
MHz
ns
ns
ns
ns
ns
ms
ms
ms
ms
MHz
ns
Figure
Figure 31.1
Figure 31.3
Figure 31.4
Figure 31.5
Figure 31.6
Figure 31.4
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Rev. 1.00 Jun. 26, 2008 Page 1597 of 1692
REJ09B0393-0100