參數(shù)資料
型號(hào)： UPD780018
廠商： NEC Corp.
元件分類(lèi)： 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)： 40/58頁(yè)
文件大?。?/td> 552K
代理商： UPD780018
40
μ
PD78044H, 78045H, 78046H
Recommended sample circuit for the main system clock when the CSB1000J manufactured by Murata Mfg.
is used
CAPACITANCE
(T
A
= 25
°
C, V
DD
= V
SS
= 0 V)
Remark
Unless otherwise specified, the characteristics of a shared pin are the same as those of the correspond-
ing port pin.
POWER SUPPLY VOLTAGE
(T
A
= –40 to +85
°
C)
Notes 1.
Except for system clock oscillator, display controller/driver, and PWM.
2.
Operating power supply voltage differs depending on the cycle time. See the
AC Characteristics
.
CSB1000J
V
SS
V
DD
X2
X1
Rd
C2
C1
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Input
capacitance
C
IN
f = 1 MHz Unmeasured pins returned to 0 V
15
pF
Output
capacitance
C
OUT
f = 1 MHz Unmeasured pins returned to 0 V
35
pF
Input/output
capacitance
C
IO
f = 1 MHz
Unmeasured pins returned to 0 V
P01-P03, P10-P17,
P20-P27
15
pF
P30-P37, P70-P74
20
pF
P110-P117, P120-P127
35
pF
Parameter
Conditions
MIN.
TYP.
MAX.
Unit
CPU
Note 1
2.7
Note 2
5.5
V
Display controller/driver
4.5
5.5
V
PWM mode of 16-bit
timer/event counter
(TM0)
4.5
5.5
V
A/D converter
4.0
5.5
V
Other hardware
2.7
5.5
V
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