|
TC32M Data Sheet
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.
Parameter Name Value
Manual Reset No
Watchdog Timer Yes
Typical Reset Pulse Width (ms) 500
Reset Type Active Low
Typical Supply Current (uA) 50
Vcc Range Min (V) 4.5
Vcc Range Max (V) 5.5
Output Open-Drain
Temp Range Min. (°C) -40
Temp Range Max. (°C) +85
Nominal Reset Voltage (V) 4.25
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
推荐MICROCHIP全系列产品推广商:(可申请部分免费样片,资料,大家赶快行动吧!)
授权A级代理商;提供技术支持;提供成熟方案;提供免费样品;提供详细资料!
深圳市英锐恩科技有限公司
联系电话: 0755-88845951 82543411传真:0755-82543511
E-mail: enroo@enroo.com
网址: www.enroo.com (”o”为字母)
公司地址: 福田区深南中路嘉汇新城汇商中心1203-1205
专业为客户提供芯片选型指导、技术咨询、开发工具技术支持、产品开发设计等专业的技术服务。
同时为Microchip全系列芯片代理推广商,分销服务商,专业提供Microchip全系列开发工具及技术支持。 |
|