I found the features on the BD87A29FVM

[galody]

The BD87A29FVM is designed as one kind of voltage detector with watchdog timer that has two points of features1)high detection voltage precision: +/-1.5 % / low quescent current: 5 uA;(2)reset delay time and watchdog time can be set with external capacitance.

And the electrical characteristics of the BD87A29FVM can be summarized as1)output delay time L to H: 3.9 to 10.1 ms;(2)output delay resistance: 5.8 Ω to 14.5 Ω;(3)CT pin threshold voltage: VDD x 0.3 to VDD x 0.6 V;(4)minimum operating voltage: 1.0 V;(5)watchdog monitor time: 7.0 to 20.0 ms;(6)watchdog reset time: 2.4 to 7.0 ms;(7)clock pulse width: 500 ns;(8)CTW discharge current: 0.75 to 2.00 uA.