TC32M _ BDTIC a Leading Distributor in China

TC32M

The TC32M is a fully-integrated processor supervisor in a 3-pin package. 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 TC32M holds the processor in the reset state for a minimum of 500msec after VDD 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 high-to-low level shift (through an external resistor divider) on the RS pin of the TC32M. Should the processor fail to supply this signal within the specified timeout period (typically 700msec), an out-of-control processor is indicated and the TC32M issues a processor reset as a result. The output of the TC32M can be wire-ORed with a push-button switch (or electronic signal) to override the TC32M and unconditionally reset the processor. When connected to a push-button switch, the TC32M provides contact debounce. The TC32M is packaged in a space-saving TO-92 or SOT-223 package. It provides all of the functionality of the industry standard TC1232 in a smaller, lower cost configuration.

Features

Incorporates the Functionality of the Industry Standard TC1232 (Processor Monitor, Watchdog and Manual Override RESET Controller) into a Small, Lower Cost Package
Guards Against Unstable Processor Operation Resulting from Power "Brown-Out"
Automatically Halts and Restarts an Out-of-Control Microprocessor
Output can be Wire-ORed, or Hooked to Manual RESET Push-button Switch

Parameter

Parameter Name Value	Value
Watchdog Timer Yes	Yes
Typical Reset Pulse Width (ms) 500	500
Reset Type Active Low	Active Low
Typical Supply Current (uA) 50	50
Vcc Range Min (V) 4.5	4.5
Vcc Range Max (V) 5.5	5.5
Output Open-Drain	Open-Drain
Temp Range Min. (°C) -40	-40
Temp Range Max. (°C) +85	+85
Nominal Reset Voltage (V) 4.25	4.25

Documents

TC32M Data Sheet	Data Sheets	02/05/2013	145KB
AN686 - Understanding and Using Supervisory Circuits	AppNote	05/13/2003	84KB
AN820 - System Supervisors in ICSP™ Architectures	AppNote	10/05/2006	111KB
Analog & Interface Guide (Volume 2)	Brochures	10/11/2005	1067KB
Quick Guide to Microchip Development Tools	Brochures	10/15/2014	11223KB
Microcontroller Supervisor Family Product Overview	Product Line Documents	06/13/2006	91KB
Analog & Interface Product Selector Guide	Product Line Card	03/21/2016	4116KB

Ordering Information

Part Number	Leads	Package Type	Temp Range	Packing	1+	26+	100+	1000+	5000+
TC32MCDB	3	SOT-223	0C to +70C	TUBE	2.27	1.89	1.72	1.43	1.32
TC32MCDB713	3	SOT-223	0C to +70C	T/R	2.27	1.89	1.72	1.43	1.32
TC32MCZB	3	TO-92	0C to +70C	BAG	2.01	1.67	1.52	1.27	1.17
TC32MEDB	3	SOT-223	-40C to +85C	TUBE	2.38	1.98	1.80	1.50	1.38
TC32MEDB713	3	SOT-223	-40C to +85C	T/R	2.38	1.98	1.80	1.50	1.38
TC32MEZB	3	TO-92	-40C to +85C	BAG	2.14	1.78	1.62	1.35	1.25

RoHS Information

PartNumber	DeviceWeight	ShippingWeight	LeadCount	PackageType	PackageWidth	SolderComposition	JEDECIndicator
TC32MEZB	0.203400	0.219000	3	TO-92	-	Matte Tin	e3
TC32MCZB	0.203400	0.219000	3	TO-92	-	Matte Tin	e3
TC32MCDB	0.115700	0.217949	3	SOT-223	-	Matte Tin	e3
TC32MCDB713	0.115700	0.219250	3	SOT-223	-	Matte Tin	e3
TC32MEDB	0.115700	0.217949	3	SOT-223	-	Matte Tin	e3
TC32MEDB713	0.115700	0.219250	3	SOT-223	-	Matte Tin	e3