參數(shù)資料
型號(hào): UPD78045F
廠商: NEC Corp.
元件分類: DC/DC變換器
英文描述: 1 watt dc-dc converters
中文描述: 1瓦的DC - DC轉(zhuǎn)換器
文件頁數(shù): 49/72頁
文件大小: 510K
代理商: UPD78045F
49
m
PD78042F, 78043F, 78044F, 78045F
(v) Two-wire serial I/O mode (SCK0: Internal clock output)
Note
R is a load resistance of the SCK0, SB0, or SB1 output line, and C is its load capacitance.
(vi) Two-wire serial I/O mode (SCK0: External clock input)
Note
R is a load resistance of the SB0 or SB1 output line, and C is its load capacitance.
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
SCK0 cycle time
t
KCY5
R = 1 k
W
,
C = 100 pF
Note
V
DD
= 4.5 to 5.5 V
1600
ns
3800
ns
SCK0 high-level width
t
KH5
t
KCY5
/2
160
ns
SCK0 low-level width
t
KL5
t
KCY5
/2
50
ns
SB0, SB1 setup time to SCK0
t
SIK5
300
ns
SB0, SB1 hold time from
SCK0
t
KSI5
600
ns
SCK0
SB0, SB1 output
delay time
t
KSO5
V
DD
= 4.5 to 5.5 V
0
250
ns
0
1000
ns
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
SCK0 cycle time
t
KCY6
V
DD
= 4.5 to 5.5 V
1600
ns
3800
ns
SCK0 high-level width
t
KH6
650
ns
SCK0 low-level width
t
KL6
800
ns
SB0, SB1 setup time to SCK0
t
SIK6
100
ns
SB0, SB1 hold time from
SCK0
t
KSI6
t
KCY6
/2
ns
SCK0
SB0, SB1 output
delay time
t
KSO6
R = 1 k
W
,
C = 100 pF
Note
V
DD
= 4.5 to 5.5 V
0
300
ns
0
1000
ns
SCK0 rise time and fall time
t
R6
t
F6
160
ns
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