TC1232

TC1232 is a fully-integrated processor supervisor. It provides three important functions to safeguard processor sanity: precision power on/off reset control, watchdog timer and external reset override. On power-up, the TC1232 holds the processor in the reset state for a minimum of 250msec after VCC is within tolerance to ensure a stable system start-up. Microprocessor sanity is monitored by the on-board watchdog circuit. The microprocessor must provide a periodic low-going signal on the ST input. Should the processor fail to supply this signal within the selected time-out period (150msec, 600msec or 1200msec), an out-of-control processor is indicated and the TC1232 issues a processor reset as a result. The outputs of the TC1232 are immediately driven active when the PB input is brought low by an external push-button switch or other electronic signal. When connected to a push-button switch, the TC1232 provides contact debounce. The TC1232 is packaged in a space-saving 8-pin plastic DIP or SOIC package and requires no external components.

Features
  • Precision Voltage Monitor Adjustable +4.5V or +4.75V
  • No External Components, Adjustable Watchdog Timer: 150msec, 600msec or 1.2sec
  • Debounced Manual Reset Input for External Override
Parameter
Parameter Name Value Value
Manual Reset Yes Yes
Watchdog Timer Yes Yes
Typical Reset Pulse Width (ms) 610 610
Reset Type Active Low/High Active Low/High
Typical Supply Current (uA) 50 50
Vcc Range Min (V) 4.5 4.5
Vcc Range Max (V) 5.5 5.5
Output Push-Pull/Open-Drain Push-Pull/Open-Drain
Temp Range Min. (°C) -40 -40
Temp Range Max. (°C) +85 +85
Nominal Reset Voltage (V) 4.50, 4.25 4.50, 4.25
Documents
TC1232 DatasheetData Sheets02/28/2014566KB
AN686 - Understanding and Using Supervisory CircuitsAppNote05/13/200384KB
AN820 - System Supervisors in ICSP™ ArchitecturesAppNote10/05/2006111KB
Analog & Interface Guide (Volume 2)Brochures10/11/20051067KB
Quick Guide to Microchip Development ToolsBrochures10/15/201411223KB
Microcontroller Supervisor Family Product OverviewProduct Line Documents06/13/200691KB
Analog & Interface Product Selector GuideProduct Line Card03/21/20164116KB
8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board User's GuideUser Guides01/24/20061367KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
TC1232COA8SOIC0C to +70CTUBE1.321.101.000.830.77
TC1232COA7138SOIC0C to +70CT/R1.321.101.000.830.77
TC1232COE16SOIC0C to +70CTUBE2.271.891.721.431.32
TC1232COE71316SOIC0C to +70CT/R2.271.891.721.431.32
TC1232CPA8PDIP0C to +70CTUBE1.321.101.000.830.77
TC1232EOA8SOIC-40C to +85CTUBE1.321.101.000.830.77
TC1232EOA7138SOIC-40C to +85CT/R1.321.101.000.830.77
TC1232EOE16SOIC-40C to +85CTUBE2.902.422.201.831.69
TC1232EOE71316SOIC-40C to +85CT/R2.902.422.201.831.69
TC1232EPA8PDIP-40C to +85CTUBE1.321.101.000.830.77
相关开发工具
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
TC1232EPA0.4867000.9000008PDIP.300inMatte Tine3
TC1232CPA0.4867000.9000008PDIP.300inMatte Tine3
TC1232EOA0.0780000.1600008SOIC.150In(3.90mm)Matte Tine3
TC1232EOA7130.0780000.2303038SOIC.150In(3.90mm)Matte Tine3
TC1232COA0.0780000.1600008SOIC.150In(3.90mm)Matte Tine3
TC1232COA7130.0780000.2303038SOIC.150In(3.90mm)Matte Tine3
TC1232COE0.4380000.76595716SOIC.300 InMatte Tine3
TC1232COE7130.4380000.80000016SOIC.300 InMatte Tine3
TC1232EOE0.4380000.76595716SOIC.300 InMatte Tine3
TC1232EOE7130.4380000.80000016SOIC.300 InMatte Tine3
TC1232 Datasheet TC1232
AN686 MCP112
AN820 MCP112
Analog & Interface Guide (Volume 2) MCP23S08
Quick Guide to Microchip Development Tools ENC28J60
Microcontroller Supervisor Family Product Overview TCM810
Analog & Interface Product Selector Guide ENC624J600
8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board User's Guide SOIC8EV