DS1232 Datasheet

  • DS1232

  • MicroMonitor Chip

  • 96.50KB

  • Dallas

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DS1232
MicroMonitor Chip
www.dalsemi.com
FEATURES
Halts and restarts an out-of-control
microprocessor
Holds microprocessor in check during power
transients
Automatically restarts microprocessor after
power failure
Monitors pushbutton for external override
Accurate 5% or 10% microprocessor power
supply monitoring
Eliminates the need for discrete components
Space-saving, 8-pin mini-DIP
Optional 16-pin SOIC surface mount package
Industrial temperature -40掳C to +85掳C
available, designated N
PIN ASSIGNMENT
PBRST
TD
TOL
GND
1
2
3
4
8
7
6
5
VCC
ST
RST
RST
DS1232 8-Pin DIP (300-mil)
See Mech. Drawings Section
NC
PBRST
NC
TD
NC
TOL
NC
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
NC
VCC
NC
ST
NC
RST
NC
RST
DS1232S 16-Pin SOIC (300-mil)
See Mech. Drawings Section
PIN DESCRIPTION
PBRST
TD
TOL
GND
RST
RST
ST
V
CC
NC
- Pushbutton Reset Input
- Time Delay Set
- Selects 5% or 10% V
CC
Detect
- Ground
- Reset Output (Active High)
- Reset Output (Active Low, open
drain)
- Strobe Input
- +5 Volt Power
- No Connections
DESCRIPTION
The DS1232 MicroMonitor Chip monitors three vital conditions for a microprocessor: power supply,
software execution, and external override. First, a precision temperature-compensated reference and
comparator circuit monitors the status of V
CC
. When an out-of-tolerance condition occurs, an internal
power fail signal is generated which forces reset to the active state. When V
CC
returns to an in-tolerance
condition, the reset signals are kept in the active state for a minimum of 250 ms to allow the power supply
and processor to stabilize.
1 of 7
111899

DS1232 产品属性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 50

  • 集成电路 (IC)

  • PMIC - 监控器

  • MicroMonitor™

  • 简单复位/加电复位

  • 1

  • 开路漏极,推挽式

  • 高有效/低有效

  • 可调节/可选择

  • 4.37V,4.62V

  • 0°C ~ 70°C

  • 通孔

  • 8-DIP(0.300",7.62mm)

  • 8-PDIP

  • 管件

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