CAT1026, CAT1027
BLOCK DIAGRAM
Preliminary Information
RESET Threshold Options
Part Dash Minimum Maximum
Number Threshold Threshold
EXTERNAL LOAD
SENSE AMPS
SHIFT REGISTERS
D
OUT
-45
-42
-30
-28
-25
4.50
4.25
3.00
2.85
2.55
4.75
4.50
3.15
3.00
2.70
ACK
V
V
CC
SS
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
START/STOP
LOGIC
SDA
2kbit
EEPROM
XDEC
CONTROL
LOGIC
DATA IN STORAGE
V
CC Monitor
HIGH VOLTAGE/
TIMING CONTROL
V
CC
STATE COUNTERS
SCL
SLAVE
ADDRESS
COMPARATORS
+
-
RESET
Controller
WDI
(CAT1027)
V
REF
Auxiliary Voltage Monitor
RESET
(CAT1026)
RESET
V
+
-
SENSE
V
LOW
V
REF
(Bottom View)
TDFN Package: 3mm x 3mm
0.8mm maximum height - (RD4)
(Bottom View)
TDFN Package: 3mm x 4.9mm
0.8mm maximum height - (RD2)
PIN CONFIGURATION
8
7
6
5
1
2
3
4
V
V
V
V
LOW
1
2
3
4
1
2
3
4
V
V
8
7
6
5
8
7
6
5
CC
LOW
CC
LOW
CC
RESET
RESET
SCL
RESET
SCL
RESET
RESET
SCL
RESET
CAT1026
CAT1026
CAT1026
V
V
V
SENSE
SENSE
SENSE
SDA
V
SDA
V
V
SDA
SS
SS
SS
8
7
6
5
1
2
3
4
V
V
1
V
V
V
V
8
7
6
5
1
2
3
4
8
7
6
5
CC
LOW
CC
LOW
LOW
CC
RESET
WDI
SCL
SDA
2
3
4
WDI
SCL
SDA
RESET
WDI
SCL
SDA
RESET
CAT1027
CAT1027
CAT1027
V
V
V
SENSE
SENSE
SENSE
V
V
SS
V
SS
SS
Doc. No. 3010, Rev. E
2
CATALYST [ CATALYST SEMICONDUCTOR ]
