參數(shù)資料
型號： L4904A
廠商： 意法半導(dǎo)體
英文描述： DUAL 5V REGULATOR WITH RESET
中文描述： 雙帶復(fù)位5V穩(wěn)壓器
文件頁數(shù)： 5/9頁
文件大?。?/td> 96K
代理商： L4904A
Figure 2
APPLICATION SUGGESTIONS
Figure 3 shows an application circuit for a
μ
P
system.
Reg.1 is permanently connectedto a battery and
supplies a CMOS time-of-day clock and a CMOS
microcomputerchip withvolatile memory.
Reg.2 may be switched OFF when the system is
inactive.
Figure4 showsthe L4904Awith a backup battery
on the V
01
outputto maintaina CMOStime-of-day
Figure 3
clock and a stand by type C-MOS
μ
P. The reset
output makes surethat the RAM is forced into the
low consumptionstand by state, so the access to
memory is inhibit and the back up battery voltage
cannot drop so low that memory contentsarecor-
rupted.
Inthiscasethemainon-offswitchdisconnectsboth
regulatorsfrom the supply battery.
Application Circuits of a Microprocessor system
(Figure3) or withdata savebattery(Figure4).The
reset output provide delayed rising front at the
L4904A
5/9
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