889
25.3.1
Clock Timing
Table 25-5 lists the clock timing
Table 25-5 Clock Timing
Condition A: V
CC
= PLLV
CC
= 3.0 V to 3.6 V, PV
CC
= 3.0 V to 5.5 V, AV
CC
= 3.3 V to 5.5 V,
V
ref
= 3.3 V to AV
CC
, V
SS
= AV
SS
= 0 V, ø = 32.768 kHz, 2 to 16 MHz,
T
a
= –20°C to +75°C (regular specifications), T
a
= –40°C to +85°C (wide-range
specifications)
Condition B: V
CC
= PLLV
CC
= 3.0 V to 3.6 V, PV
CC
= 4.5 V to 5.5 V, AV
CC
= 3.3 V to 5.5 V,
V
ref
= 3.3 V to AV
CC
, V
SS
= AV
SS
= 0 V, ø = 32.768 kHz, 2 to 25 MHz,
T
a
= –20°C to +75°C (regular specifications), T
a
= –40°C to +85°C (wide-range
specifications)
Condition A
Condition B
16MHz
25MHz
Item
Symbol
Min
Max
Min
Max
Unit
Test Conditions
Clock cycle time
t
cyc
62.5
500
40
500
ns
Figure 25-2
Clock high pulse width
t
CH
18
—
15
—
ns
Clock low pulse width
t
CL
18
—
15
—
ns
Clock rise time
t
Cr
—
12
—
5
ns
Clock fall time
t
Cf
—
12
—
5
ns
Clock oscillator settling
time at reset (crystal)
t
OSC1
10
—
10
—
ms
Figure 25-3
Clock oscillator settling
time in software standby
(crystal)
t
OSC2
8
—
5
—
ms
Figure 24-3
External clock output
stabilization delay time
t
DEXT
2
—
2
—
ms
Figure 25-3
32 kHz clock oscillation
settling time
t
OSC3
—
2
—
2
s
Sub clock oscillator
frequency
f
SUB
32.768
32.768
kHz
Sub clock (ø
SUB
) cycle time t
SUB
30.5
30.5
µ
s
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...