參數(shù)資料
型號(hào): FM1233AD
廠(chǎng)商: Fairchild Semiconductor Corporation
英文描述: CABLE ASSEM 2MM 20POS SGL END 2,1
中文描述: 3引腳?監(jiān)電路
文件頁(yè)數(shù): 5/7頁(yè)
文件大?。?/td> 66K
代理商: FM1233AD
F
5
www.fairchildsemi.com
FM1233A Rev. E
General Description
The FM1233A features a highly accurate voltage reference to
which V
CC
is compared. Once V
CC
old, it will drive the RESET line and continue to hold it low until
V
CC
returns above the threshold and the time for the RESET
pulse duration has expired. The FM1233A is immune to short
negative going transients on the V
0.1μF bypass capacitor as close as possible to the V
vides additional transient immunity.
is below the specified thresh-
CC
line. The placement of a
CC
pin pro-
For a V
much current on the RESET pin. This is not a problem in most
systems since common devices are not functional in this range.
If it is desired for the FM1233A reset to be functional below this
range, use a 100K
pull-down resistor between RESET and
V
SS
.
Bi-Directional Reset
CC
value below 1.0V, the FM1233A does not sink very
The FM1233A permits a pushbutton (or a signal) to initiate a
reset externally. Once this external reset is detected on the
reset pin, FM1233 also actively asserts the reset signal to main-
tain the Reset Timeout period when the external reset is not
present .
FM1233 internally debounces glitches seen during a typical
push button closure. For proper operation, the external switch
should be paralleled by an external capacitor of 100pF to
0.01μF.
Connecting an External Reset to the FM1233A
1
FM1233
Controller
2
3
VCC
GND
100pF
PUSH
BUTTON
RESET
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FM1233B 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:3-Pin レC Supervisor Circuit
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