SH7108 Datasheet, PDF (526/560 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 20 Electrical Characteristics
20.3.2 Clock Timing
Table 20.4 shows the clock timing.
Table 20.4 Clock Timing
Conditions: V_CC = 4.0 V to 5.5 V, AV_CC = 4.0 V to 5.5 V, V_SS = PLLV_SS = AV_SS = 0 V, T_a = –20°C
to +75°C (standard product*), T_a = –40°C to +85°C (wide temperature-range
product*)
Item
Operating frequency 50-MHz operation*
40-MHz operation*
Clock cycle time
50-MHz operation*
40-MHz operation*
Clock low-level pulse width
Clock high-level pulse width
Clock rise time
Clock fall time
EXTAL clock input
frequency
50-MHz operation*
40-MHz operation*
EXTAL clock input
cycle time
50-MHz operation*
40-MHz operation*
EXTAL clock input 50-MHz operation*
low-level pulse width _{40-MHz operation*}
EXTAL clock input 50-MHz operation*
high-level pulse width _{40-MHz operation*}
EXTAL clock input rise time
EXTAL clock input fall time
Reset oscillation settling time
Standby return oscillation settling time
Clock cycle time for peripheral modules
Symbol
f
op
t_cyc
t_CL
t
CH
t
CR
t_CF
f_EX
t
EXcyc
t_EXL
t_EXH
t
EXR
t_EXF
t_OSC1
t_OSC2
t_pcyc
Min.
10
10
20
25
4
4
—
—
4
4
80
100
35
45
35
45
—
—
10
10
25
Max.
50
40
100
100
—
—
5
5
12.5
10.0
250
250
—
Unit
MHz
Figures
Figure 20.2
ns
ns
ns
ns
ns
MHz
Figure 20.3
ns
ns
—
ns
5
ns
5
ns
—
ms
Figure 20.4
—
ms
100
ns
—
Note: * For details on correspondence of the standard product, wide temperature-range product,
and product model name, refer to description of maximum operating frequency and
operating temperature range in section 1.1, Features.
Rev.1.00 Sep. 18, 2008 Page 492 of 522
REJ09B0069-0100