
CAT1026, CAT1027
Doc. No. 3010 Rev. L
2
2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
2kbit
DOUT
ACK
SENSEAMPS
SHIFT REGISTERS
CONTROL
LOGIC
WORDADDRESS
BUFFERS
START/STOP
LOGIC
EEPROM
VCC
EXTERNAL LOAD
COLUMN
DECODERS
XDEC
DATA IN STORAGE
HIGHVOLTAGE/
TIMING CONTROL
VSS
SDA
RESET
Controller
STATE COUNTERS
SLAVE
ADDRESS
COMPARATORS
SCL
RESET
(CAT1026)
RESET
WDI
(CAT1027)
-
+
VCC
VSENSE
-
+
VREF
VLOW
VREF
AuxiliaryVoltage Monitor
VCC Monitor
BLOCK DIAGRAM
RESET THRESHOLD OPTION
Part Dash
Number
-45
-42
-30
-28
-25
Minimum
Threshold
4.50
4.25
3.00
2.85
2.55
Maximum
Threshold
4.75
4.50
3.15
3.00
2.70
PIN CONFIGURATION
DIP Package (L
)
SOIC Package (W
)
TSSOP Package (Y
)
MSOP Package (Z
)
V
LOW
1
8
V
CC
RESET
2
7
RESET
V
SENSE
3
6
SCL
V
SS
4
5
SDA
CAT1026
V
LOW
1
8
V
CC
RESET
2
7
WDI
V
SENSE
3
6
SCL
V
SS
4
5
SDA
CAT1027
(Bottom View)
TDFN Package: 3mm x 3mm
0.8mm maximum height - (ZD4)
V
CC
8
1
V
LOW
RESET
7
2
RESET
SCL
6
CAT1026
3 V
SENSE
SDA
5
4 V
SS
V
CC
8
1
V
LOW
WDI
7
2
RESET
SCL
6
CAT1027
3 V
SENSE
SDA
5
4 V
SS