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CAT1161 Datasheet(PDF) 4 Page - Catalyst Semiconductor

No. de Pieza. CAT1161
Descripción  Supervisory Circuits with I2C Serial CMOS EEPROM, Precision Reset Controller and Watchdog Timer
Descarga  14 Pages
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Fabricante  CATALYST [Catalyst Semiconductor]
Página de inicio  http://www.catalyst-semiconductor.com
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CAT1161 Datasheet(HTML) 4 Page - Catalyst Semiconductor

 
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CAT1161, CAT1162
Doc. No. 3002 Rev. F
4
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
WRITE CYCLE LIMITS
Symbol
Parameter
Min
Typ
Max
Units
tWR
Write Cycle Time
10
ms
The write cycle time is the time from a valid stop condition of a write sequence to the end of the internal
program/erase cycle. During the write cycle, the bus interface circuits are disabled, SDA is allowed to remain
high, and the device does not respond to its slave address.
RESET CIRCUIT CHARACTERISTICS
Symbol
Parameter
Min
Typ
Max
Units
tGLITCH
Glitch Reject Pulse Width
100
ns
VRT
Reset Threshold Hystersis
15
mV
VOLRS
Reset Output Low Voltage (IOLRS=1mA)
0.4
V
VOHRS
Reset Output High Voltage
VCC - 0.75
V
Reset Threshold (VCC=5V)
(CAT1161/2-45)
4.50
4.75
Reset Threshold (VCC=5V)
(CAT1161/2-42)
4.25
4.50
Reset Threshold (VCC=3.3V)
(CAT1161/2-30)
3.00
3.15
Reset Threshold (VCC=3.3V)
(CAT1161/2-28)
2.85
3.00
VTH
Reset Threshold (VCC=3V)
(CAT1161/2-25)
2.55
2.70
V
tPURST
Power-Up Reset Timeout
130
270
ms
tWP
Watchdog Period
1.6
sec
tRPD
VTH to RESET Output Delay
5
µs
VRVALID
RESET Output Valid
1
V


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