參數(shù)資料
型號(hào): UPD780001
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(yè)數(shù): 46/72頁(yè)
文件大小: 510K
代理商: UPD780001
46
m
PD78042F, 78043F, 78044F, 78045F
Operated with main system clock
Operated with subsystem clock
V
DD
= 4.5 to 5.5 V
V
DD
= 4.5 to 5.5 V
INTP0
INTP1-INTP3
T
CY
f
TI
t
TIH
t
TIL
t
INTH
t
INTL
t
RSL
Cycle time
(minimum
instruction
execution
time)
TI1, 2 input
frequency
TI1, 2 input
high, low-level
width
Interrupt
input high,
low-level
width
RESET low-
level width
Conditions
V
DD
= 4.5 to 5.5 V
Symbol
Parameter
Unit
0.4
0.8
40
Note 1
0
0
250
3.6
8/f
sam
Note 2
10
10
m
s
m
s
m
s
MHz
kHz
ns
m
s
m
s
m
s
m
s
32
32
125
2
138
122
MIN.
TYP.
MAX.
AC CHARACTERISTICS
(1) Basic operation (T
A
= –40 to +85 °C, V
DD
= 2.7 to 5.5 V)
Notes 1.
Value when external clock input is used as subsystem clock. When crystal is used, the value becomes
114
m
s.
2.
Selection of
fsam
= f
X
/2
N+1
, f
X
/64, f
X
/128 is available (N = 0 to 4) by bits 0 and 1 (SCS0, SCS1) of sampling
clock select register (SCS).
T
CY
vs. V
DD
(with main system clock operated)
6
5
3
1
60
30
10
2.0
Power supply voltage V
DD
[V]
C
C
4
2
1.0
0.5
0.4
Operation guarantee
range
0
μ
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