CAT1161PI-42 Catalyst / ON Semiconductor, CAT1161PI-42 Datasheet - Page 6

• Manufacturer Part Number: CAT1161PI-42
• Description: Supervisory Circuits 16K I2C Memory w/WDT
• Manufacturer: Catalyst / ON Semiconductor

Specifications of CAT1161PI-42

• Number Of Voltages Monitored: 1
• Monitored Voltage: 3 V, 3.3 V, 5 V
• Output Type: Active High, Active Low, Open Drain
• Manual Reset: Resettable
• Watchdog: Watchdog
• Battery Backup Switching: No Backup
• Supply Voltage (max): 6 V
• Supply Voltage (min): 2.7 V
• Supply Current (typ): 3000 uA
• Maximum Power Dissipation: 1000 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: PDIP-8
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Undervoltage Threshold: 4.25 V
• Overvoltage Threshold: 4.5 V
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

CAT1161, CAT1162
Hardware Data Protection
The CAT1161/2 is designed with the following
hardware data protection features to provide a high
degree of data integrity.
(1) The CAT1161/2 features a WP pin. When the WP
(2) The V
Figure 2. Bus Timing
Figure 3. Write Cycle Timing
Figure 4. Start/Stop Timing
Doc. No. MD-3002 Rev. I
pin is tied high the entire memory array becomes
write protected (read only).
falls below the reset threshold value (V
CC
SCL
SDA
sense provides write protection when V
SDA OUT
SDA IN
SCL
SDA
SCL
t SU:STA
8TH BIT
BYTE n
START BIT
t F
t HD:STA
t LOW
ACK
t AA
TH
t HD:DAT
). The
t HIGH
CC
STOP
CONDITION
6
t LOW
Reset Threshold Voltage
The CAT1161/2 is offered with five reset threshold
voltage ranges. They are 4.50 ÷ 4.75V, 4.25 ÷ 4.50V,
3.00 ÷ 3.15V, 2.85 ÷ 3.00V and 2.55 ÷ 2.70V.
t DH
V
whenever V
until V
V
is not recognized and an ACK will not be sent on
the SDA line when RESET or RESET
t SU:DAT
t R
CC
TH
. Any attempt to access the internal EEPROM
t WR
lock out inhibits writes to the serial EEPROM
CC
reaches the reset threshold (power up)
CC
STOP BIT
START
CONDITION
falls below (power down) V
t SU:STO
t BUF
Characteristics subject to change without notice
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ADDRESS
TH
or