HD6432646 Hitachi, HD6432646 Datasheet - Page 795

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

23.4.1
Table 23-4 lists the clock timing
Table 23-4 Clock Timing
Condition :
Item
Clock cycle time
Clock high pulse width
Clock low pulse width
Clock rise time
Clock fall time
Clock oscillator settling
time at reset (crystal)
Clock oscillator settling time in
software standby (crystal)
Sub clock oscillator settling time
Sub clock oscillator frequency
Sub clock (ø
Clock Timing
SUB
V
V
+75°C (regular specifications), T
) cycle time
CC
ref
= 4.5 V to AV
= PWMV
CC
= 4.5 V to 5.5 V, LPV
CC
, V
SS
Symbol Min
t
t
t
t
t
t
t
t
f
f
cyc
CH
CL
Cr
Cf
OSC1
OSC2
OSC3
SUB
SUB
= PWMV
a
50
25
25
—
—
20
8
—
32.768
30.5
= –40°C to +85°C (wide-range specifications)
SS
Condition
= PLLV
CC
= 4.5 V to 5.5 V, AV
Max
250
—
—
10
10
—
—
2
SS
= AV
Unit
ns
ns
ns
ns
ns
ms
ms
s
kHz
s
SS
= 0 V, T
Test Conditions
Figure 23-3
Figure 23-4
Figure 22-3
Figure 23-4
CC
a
= 4.5 V to 5.5 V,
= –20°C to
761