SH7144_08 Datasheet, PDF (816/930 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series

26. Electrical Characteristics
26.3.2 Clock timing
Table 26.4 shows the clock timing.
Table 26.4 Clock Timing
Conditions: V_CC = PLLV_CC =3.3 V ± 0.3 V, AV_CC = 3.3 V ± 0.3 V, AV_CC = V_CC ± 0.3 V,
AV_ref = 3.0 V to AV_CC , V_SS = PLLV_SS = AV_SS = 0 V, T_a = –20°C to +75°C
(regular specifications), T_a = –40°C to +85°C (wide-range specifications),
When programming or erasing flash memory, T_a = –20°C to +75°C.
Item
Operating frequency
Clock cycle time
Clock low-level pulse width
Clock high-level pulse width
Clock rise time
Clock fall time
EXTAL clock input frequency
EXTAL clock input cycle time
EXTAL clock input low-level pulse width
EXTAL clock input high-level pulse width
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. Max.
4
50
20
250
1/2 t −5 ⎯
cyc
1/2 t −5 ⎯
cyc
⎯
5
⎯
5
4
12.5
80
250
35
⎯
35
⎯
⎯
5
⎯
5
10
⎯
10
⎯
25
500
Unit
MHz
ns
ns
ns
ns
ns
MHz
ns
ns
ns
ns
ns
ms
ms
ns
Figure
Figure 26.2
Figure 26.3
Figure 26.4
Rev.4.00 Mar. 27, 2008 Page 772 of 882
REJ09B0108-0400