cat1232 Catalyst Semiconductor, cat1232 Datasheet - Page 2

• Manufacturer Part Number: cat1232
• Description: 5v And 3.3v Supply Monitor, Watchdog Timer, Manual Reset, With Active High & Low Resets
• Manufacturer: Catalyst Semiconductor

CAT1232, CAT1832
PIN CONFIGURATION
PIN DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
Note:
*
Doc. No. MD-3018 Rev. D
Parameters
Voltage on V
Voltage on ST
Voltage on PBRST
¯¯¯¯¯¯ and RESET
RESET
Pin Number
Package
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this
specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.
8-Lead
1
2
3
4
5
6
7
8
¯¯¯¯¯¯ ,
¯¯ and TD
CC
¯¯¯¯¯¯
PBRST
1, 3. 5, 7, 10,
Pin Number
GND 4
12, 14, 16
TOL 3
Package
16-Lead
MSOP 8 Lead
TD 2
SOIC 8 Lead
PDIP 8 Lead
11
13
15
2
4
6
8
9
1
-0.5 to V
-0.5 to V
CAT
-0.5 to 7.0
Ratings
8 V
7 ST
6 RESET
5 RESET
¯¯¯¯¯¯
PBRST
RESET
RESET
¯¯¯¯¯¯
CC
CC
¯¯
Name
GND
TOL
CC
V
NC
TD
ST
¯¯
+ 0.5
+ 0.5
CC
(*)
Function
Debounced manual pushbutton reset input
Watchdog typical time delay selection:
a) t
b) t
c) t
CAT1232LP TOL selects 5% (TOL = GND) or 10% (TOL = V
point tolerance. CAT1832 TOL selects 10% (TOL = GND) or 20%
TOL = V
Ground
Active HIGH reset output. RESET is active
1. If V
2. If PBRST
3. If ST
4. During power-up.
Active LOW reset output. (See RESET)
Strobe Input
Power Supply
No internal connection
Units
V
V
V
TD
TD
TD
¯¯¯¯¯¯ is low
¯¯ is not strobed low before the timeout period set by TD expires.
= 1200ms for TD = V
= 150ms for TD = GND
= 600ms for TD = Open
CC
CC
falls below the reset voltage trip point
) trip point tolerance.
2
Parameters
Maximum Junction Temperature
Storage Temperature Range
Lead Soldering Temperature (10s)
Operating Temperature Range
CC
¯¯¯¯¯¯
PBRST
GND 8
TOL 6
NC 1
NC 3
NC 5
NC 7
SOIC 16 Lead
TD 4
2
CAT
Characteristics subject to change without notice
16 NC
15 V
14 NC
13 ST
12 NC
11 RESET
10 NC
9
¯¯¯¯¯¯
RESET
-65 to +150
¯¯
-40 to +85
CC
© Catalyst Semiconductor, Inc.
Ratings
125
300
CC
) trip
Units
ºC
ºC
ºC
ºC