CAT1024, CAT1025
BLOCK DIAGRAM — CAT1024, CAT1025
EXTERNAL LOAD
VCC
VSS
DOUT
ACK
WORD ADDRESS
BUFFERS
SENSE AMPS
SHIFT REGISTERS
COLUMN
DECODERS
SDA
WP*
START/STOP
LOGIC
CONTROL
LOGIC
XDEC
2kbit
EEPROM
Threshold Voltage Options
Part Dash Minimum Maximum
Number Threshold Threshold
-45
4.50
4.75
-42
4.25
4.50
-30
3.00
3.15
-28
2.85
3.00
-25
2.55
2.70
DATA IN STORAGE
HIGH VOLTAGE/
TIMING CONTROL
RESET Controller
STATE COUNTERS
SCL
Precision
SLAVE
MR
Vcc Monitor
ADDRESS
COMPARATORS
*CAT1025 Only
* RESET RESET
PIN FUNCTIONS
Pin Name Function
NC
RESET
VSS
SDA
SCL
RESET
VCC
WP
MR
No Connect
Active Low Reset Input/Output
Ground
Serial Data/Address
Clock Input
Active High Reset Output (CAT1025 only)
Power Supply
Write Protect (CAT1025 only)
Manual Reset Input
OPERATING TEMPERATURE RANGE
Industrial
Extended
-40˚C to 85˚C
-40˚C to 125˚C
Doc. No. 3008, Rev. M
2