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CAT811ZEUS-T Datasheet(PDF) 8 Page - Catalyst Semiconductor

Part # CAT811ZEUS-T
Description  4-Pin Microprocessor Power Supply Supervisors
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Manufacturer  CATALYST [Catalyst Semiconductor]
Direct Link  http://www.catalyst-semiconductor.com
Logo CATALYST - Catalyst Semiconductor

CAT811ZEUS-T Datasheet(HTML) 8 Page - Catalyst Semiconductor

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CAT811, CAT812
Doc. No. 3005, Rev. P
Patent Pending
VALID RESET WITH VCC UNDER 1.0 V
To ensure that the CAT811
RESET pin is in a known state when VCC is under 1.0 V, a 100 k
Ω pull-down resistor
between
RESET pin and GND is recommended; the value is not critical. For the CAT812, a pull-up resistor from
RESET pin to VCC is needed.
BI-DIRECTIONAL RESET PIN INTERFACING
The CAT811/812 can interface with
µP/µC bi-directional reset pins by connecting a 4.7 kΩ resistor in series with the
CAT811/812 reset output and the
µP/µC bi-directional reset pin.
CAT811
GND
VCC
100k
Power
Supply
RESET
CAT812
GND
VCC
100k
Power
Supply
RESET
FIGURE 3.
RESET
RESET
RESET
RESET
RESET Valid with VCC Under 1.0 V
FIGURE 4. RESET Valid with VCC Under 1.1 V
FIGURE 5. Bi-directional Reset Pin Interfacing
CAT811
GND
VCC
4.7k
Power
Supply
RESET
Buffered
RESET
BUF
RESET
INPUT
GND
Bi-directional I/O Pin
µP
(For example: 68HC11)


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