CAT1161WI-25-G ON Semiconductor, CAT1161WI-25-G Datasheet - Page 6

• Manufacturer Part Number: CAT1161WI-25-G
• Description: Supervisory Circuits CPU w/16K
• Manufacturer: ON Semiconductor

Specifications of CAT1161WI-25-G

• Product Category: Supervisory Circuits
• Rohs: yes
• Number Of Voltages Monitored: 1
• Monitored Voltage: 3 V, 3.3 V, 5 V
• Undervoltage Threshold: 2.55 V
• Overvoltage Threshold: 2.7 V
• Output Type: Active High, Active Low, Open Drain
• Manual Reset: Resettable
• Watchdog: Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 270 ms
• Supply Voltage - Max: 6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8 Wide
• Chip Enable Signals: No
• Maximum Power Dissipation: 1000 mW
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Supply Current (typ): 3000 uA
• Supply Voltage - Min: 2.7 V

Hardware Data Protection
data protection features to provide a high degree of data
integrity.
The CAT1161/2 is designed with the following hardware
1. The CAT1161/2 features a WP pin. When the WP
2. The V
pin is tied high the entire memory array becomes
write protected (read only).
V
The V
EEPROM whenever V
CC
SCL
SDA
falls below the reset threshold value (V
CC
CC
SDA OUT
sense provides write protection when
lock out inhibits writes to the serial
SDA IN
SCL
SD
SCL
A
t SU:STA
CC
8TH BIT
BYTE n
falls below (power
START BIT
t F
t HD:STA
t LOW
ACK
Figure 3. Write Cycle Timing
Figure 4. Start/Stop Timing
t AA
Figure 2. Bus Timing
t HD:DAT
TH
t HIGH
http://onsemi.com
).
STOP
CONDITION
t LOW
6
Reset Threshold Voltage
voltage ranges. They are 4.50 ÷ 4.75 V, 4.25 ÷ 4.50 V,
3.00 ÷ 3.15 V, 2.85 ÷ 3.00 V and 2.55 ÷ 2.70 V.
t DH
The CAT1161/2 is offered with five reset threshold
t SU:DAT
t R
down) V
(power up) V
internal EEPROM is not recognized and an ACK
will not be sent on the SDA line when RESET or
RESET is active.
t WR
TH
or until V
STOP BIT
TH
START
CONDITION
. Any attempt to access the
t SU:STO
t BUF
CC
reaches the reset threshold
ADDRESS