CAT1641 Catalyst Semiconductor, CAT1641 Datasheet - Page 2

• Manufacturer Part Number: CAT1641
• Description: Voltage Supervisor With I?c Serial 64k Cmos Eeprom
• Manufacturer: Catalyst Semiconductor

PIN DESCRIPTION
RESET/RESET
These are open-drain pins and RESET can also be used
as a 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:
The bidirectional serial data/address pin is used to trans-
fer 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.
PIN FUNCTIONS
CAT1640, CAT1641
Doc. No. MD-3012, Rev. B
BLOCK DIAGRAM — CAT1640, CAT1641
Pin Name
EXTERNAL LOAD
V CC
V SS
SDA
RESET
RESET
SDA
SCL
V
V
CC
SS
SERIAL DATA ADDRESS
RESET
RESET
RESET
RESET:
START/STOP
CONTROL
LOGIC
Function
Active Low Reset Input/Output (CAT1640)
Ground
Serial Data/Address
Clock Input
Active High Reset Output (CAT1641)
Power Supply
WORD ADDRESS
LOGIC
RESET Controller
RESET OUTPUTS
BUFFERS
Vcc Monitor
D OUT
Precision
ACK
RESET (CAT1640)
RESET (CAT1641)
XDEC
SHIFT REGISTERS
STATE COUNTERS
SLAVE
ADDRESS
COMPARATORS
DATA IN STORAGE
TIMING CONTROL
HIGH VOLTAGE/
SENSE AMPS
DECODERS
COLUMN
EEPROM
64kbit
2
SCL
A0
A1
A2
SCL:
Serial clock input.
A0, A1, A2:
When hardwired, up to eight CAT1640/41 devices may
be addressed on a single bus system (refer to Device
Addressing). When the pins are left unconnected, the
default values are zeros.
SERIAL CLOCK
OPERATING TEMPERATURE RANGE
DEVICE ADDRESS INPUTS
Threshold Voltage Options
Part Dash
Industrial
Number
-45
-42
-30
-28
-25
Advance Information
Threshold
Minimum
4.50
4.25
3.00
2.85
2.55
-40˚C to 85˚C
Threshold
Maximum
4.75
4.50
3.15
3.00
2.70