CAT1022WI-45-G ON Semiconductor, CAT1022WI-45-G Datasheet - Page 3

• Manufacturer Part Number: CAT1022WI-45-G
• Description: Supervisory Circuits CPU w/2K
• Manufacturer: ON Semiconductor

Specifications of CAT1022WI-45-G

• Product Category: Supervisory Circuits
• Rohs: yes
• Number Of Voltages Monitored: 1
• Monitored Voltage: 3 V, 3.3 V, 5 V
• Undervoltage Threshold: 4.5 V
• Overvoltage Threshold: 4.75 V
• Manual Reset: Resettable
• Watchdog: Watchdog
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8 Wide
• Maximum Power Dissipation: 1000 mW
• Minimum Operating Temperature: - 40 C
• Supply Current (typ): 3000 uA
• Supply Voltage - Min: 2.7 V

PIN DESCRIPTION
RESET/RESET: RESET OUTPUT
(RESET CAT1021/23 Only)
manual reset trigger input. By forcing a reset condition on
the pin the device will initiate and maintain a reset condition.
The RESET pin must be connected through a pull−down
resistor, and the RESET pin must be connected through a
pull−up resistor.
SDA: SERIAL DATA ADDRESS
all data into and out of the device. The SDA pin is an open
drain output and can be wire−ORed with other open drain or
open collector outputs.
SCL: SERIAL CLOCK
MR: MANUAL RESET INPUT
connected to an external source for Manual Reset. Pulling
the MR input low will generate a Reset condition. Reset
outputs are active while MR input is low and for the reset
timeout period after MR returns to high. The input has an
internal pull up resistor.
WP (CAT1021 Only): WRITE PROTECT INPUT
operations to the entire array are allowed. When tied to V
the entire array is protected. This input has an internal pull
down resistor.
These are open drain pins and RESET can be used as a
The bidirectional serial data/address pin is used to transfer
Serial clock input.
Manual Reset input is a debounced input that can be
When WP input is tied to V
RESET
RESET
RESET
RESET
V
V
V
WP
MR
MR
MR
NC
SS
SS
SS
TSSOP Package (Y)
MSOP Package (Z)
SOIC Package (W)
1
2
3
4
1
2
3
4
1
2
3
4
DIP Package (L)
CAT1021
CAT1022
CAT1023
SS
or left unconnected write
8
7
6
5
8
7
6
5
8
7
6
5
V
RESET
SCL
SDA
V
NC
SCL
SDA
V
WDI
SCL
SDA
CC
CC
CC
PIN CONFIGURATION
http://onsemi.com
CC
,
3
WDI
INTERRUPT
watchdog timer. If a transition from high to low or low to
high does not occur every 1.6 seconds, the RESET outputs
will be driven active.
Table 2. PIN FUNCTION
Table 3. OPERATING TEMPERATURE RANGE
Watchdog Timer Interrupt Input is used to reset the
Pin Name
Extended
Industrial
RESET
RESET
SDA
SCL
V
WDI
V
WP
MR
NC
(CAT1023
CC
SS
RESET
0.8mm maximum height − (ZD4)
SDA
SDA
SDA
TDFN Package: 3 mm x 3 mm
SCL
SCL
WDI
SCL
V
V
V
NC
CC
CC
CC
No Connect
Active Low Reset Input/Output
Ground
Serial Data/Address
Clock Input
Active High Reset Output (CAT1021/23)
Power Supply
Write Protect (CAT1021 Only)
Manual Reset Input
Watchdog Timer Interrupt (CAT1023)
−40°C to 85°C
−40°C to 125°C
Only):
8
7
6
5
8
7
6
5
8
7
6
5
(Bottom View)
CAT1021
CAT1022
CAT1023
WATCHDOG
Function
1
2
3
4
1
2
3
4
1
2
3
4
MR
RESET
WP
V
MR
RESET
NC
V
MR
RESET
RESET
V
SS
SS
SS
TIMER