SMR100

The SMR100 programmable reset controller is designed for consumer applications specified by Satellite-TV set-top box standards. The SMR100 provides a satellite box controller solution during initial setup, changing programming cards and/or system reset needs without removing power. The SMR100 part can accommodate a long-delay hold down of an external reset push-button using an internal programmable debounced timer. The part is factory programmed,however, multiplexed programming pins are also provided for in-system programming for prototype purposes.The required hold down time is programmable from 0.325 to 40 Sec with an internal on-chip oscillator.Accurate warning of a 3.1V brownout condition (BAD_PWR#), and a programmable reset (RESET_OUT#) timeout period when the VDD supply pin reaches 3.0V are also provided. During a reset (RESET_OUT#), the part enables the "BAD_PWR#" or brownout warning output until the reset has cleared. A programmable glitch filter avoids nuisance tripping of the internal comparators.

Features and applications of the SMR100 can be summarized as:(1)de-bounced reset input with up to 40 Second programmable delay time;(2)external push-button control provides a reliable end-user system reset function;(3)reset signal at 3.0V with a programmable timeout period;(4)brownout warning signal whenever the supply dips below 3.1V;(5)programmable glitch filtering of brownout warning (BAD_PWR#) and reset function;(6)can be sued in satellite and cable-TV set-top box;(7)handheld PCs, cameras, camcorders, PDAs;(8)security/medical alert systems.

The absolute maximum ratings of the SMR100 are also very important:(1)temperature under bias:-55°C to 125°C;(2)storage temperature:-65°C to 125°C;(3)reflow solder temperature(30 secs):240°C;(4)ESD rating per JEDEC:2000V;(5)latch-up testing per JEDEC:±100mA.