SH7604 Datasheet, PDF (498/633 Pages) Hitachi Semiconductor – Hardware Manual

16.3 AC Characteristics
16.3.1 Clock Timing
Table 16.4 Clock Timing (Conditions: V_CC = 3.0 to 0.5 V, Ta = –20 to +75°C)
Item
Operating frequency
Clock cycle time
Clock high pulse width
Clock low 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 clock fall time
Power-on oscillation settling time
Software standby oscillation settling time 1
Software standby oscillation settling time 2
PLL synchronization settling time
Notes: 1. With PLL circuit 1 operating.
2. With PLL circuit 1 not used.
Symbol Min
Max
Unit Figures
f_OP
t_cyc
t_CH
t_CL
t_CR
t_CF
f_EX
t_EXcyc
t_EXL
t_EXH
t_EXR
t_EXF
t_OSC1
t_OSC2
t_OSC3
t_PLL
4
20
MHz 16.1
50
143^*1 or 250^*2 ns
8^*1 or 15^*2 —
ns
8^*1 or 15^*2 —
ns
—
5
ns
—
5
ns
4
8
MHz 16.2
125
250
ns
50
—
ns
50
—
ns
—
5
ns
—
5
ns
10
—
ms 16.3
10
—
ms 16.4
10
—
ms 16.5
1
—
µs 16.6
CKIO
(input)
t_cyc
t_CH
t_CL
V_IH
1/2 V_CC
V_IH
V_IL
t_CF
V_IH
V_IL
1/2 V_CC
t_CR
Figure 16.1 CKIO Input Timing
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