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PDF KK1705 Data sheet ( Hoja de datos )
| Número de pieza | KK1705 | |
| Descripción | Micro Monitor Supply Control | |
| Fabricantes | KODENSHI KOREA | |
| Logotipo |  |
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TECHNICAL DATA
Micro Monitor Supply Control
KK1705
The KK1705 is designed to control power supply and to start mi-
crocontroller and microprocessor systems. It is used for securing
stable functioning of the system when starting and halting the device
as well as in the case of the supply voltage drops.
Manufactured in 8-pin SOIC/DIP package MS-012AA.
LSI features:
• rated supply voltage 5.0 V;
• generation of reset signal when power supply is on for
correct start of microprocessor;
• generation of reset signal when power supply drops below
the operating one to avoid incorrect functioning of
microprocessor;
• generation of reset signal when pushing reset button;
• possibility to program threashold voltage
at which reset signal is generated.
ORDERING INFORMATION
KK1705N Plastic
KK1705D SOIC
TA = -40° to 85° C for all packages.
The IN1705 contains a source of reference voltage,
two analog comparators, watchdog timer, digital sampler,
digital delay..
Functions:
• generation of reset signal per fixed level of supply
voltage;
• generation of reset signal from external “Reset” button;
• generation of signal of watchdog timer status;
• emergency interruption of primary power source.
PBRST 1
Vcc 2
GND 3
IN 4
8 WDS
7 RST
6 ST
5 NMI
Fig. 2 – Pin assignment
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KK1705
Timing diagrams
______
PBRST
tPB
tPDLY
VIL
____
RST
VIH
tRST
VOH
Fig. 3 – Timing diagram of forming reset signal from external PBRST control button
Invalid
___ strobe
ST
Valid
strobe
____
WDS
t ST
MIN
t TD
___
RST
Reset initiated
by pushbutton
Fig. 4 – Timing diagram: strobe input
Indeterminate
strobe
MAX
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet KK1705.PDF ] | |
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