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R2A20050ANS Datasheet(PDF) 11 Page - Renesas Technology Corp |
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R2A20050ANS Datasheet(HTML) 11 Page - Renesas Technology Corp |
11 / 14 page R2A20050ANS Page 11 of 14 Rev.1.0 May 7 ,2013 R03DS0071EJ0100 Built-in erroneous detection protection The judgment result is decided delayed by the built-in erroneous detection protection circuit. Each detection delay time is set by the internal clock. Refer to Page-5 “Detection time”about each detection time. LED control block LED lighting specification is as below. LED lighting table Mode LED Standby OFF Under charge ON Charge completion OFF Recharge ON Charge error Blink Battery temperature protection OFF Item Symbol Reference value Adaptor detection time 1 (when rising) Tadp1 8msec x 4 times = 32msec Adaptor detection time 2 (when falling) Tadp2 8msec x 4 times = 32msec VCC/BAT voltage comparison - Non detection time (judged immediately) Battery connect detection time Tcon 32msec x 4 times = 128msec Quick charge start voltage detection time Tqstart 32msec x 4 times = 128msec Charge completion current detection time Tifc 64msec x 4 times = 256msec Charge completion voltage detection time *) Tvfc 32msec x 4 times = 128msec Recharge start voltage detection time Trechg 64msec x 4 times = 256msec Battery overvoltage detection time Tov 32msec x 4 times = 128msec Forced charge time Tistart 512msec OFF time after forced charge Toff 128msec Battery temperature detection time Tpro 32msec x 4 times = 128msec Each detection time (Rosc=100kohm) *) In the case of Battery voltage > 2.9V(completed normally) Rosc resistor(Kohm) Oscillation frequency (KHz) 1000 7.5 510 14.1 300 23.5 200 33.9 100 64.0 51 109.3 If the oscillation frequency is changed, each timer and detection time will also change. (Each time is to change by the change rate of oscillation frequency.) The precision of each parameter is +15%(reference value) except when using 100kohm resistor for Rosc. IC operates at fosc=650kHz when Rosc terminal is shortcircuited to GND. Reference: Oscillation frequency setting (subject to change) |
Similar Part No. - R2A20050ANS_15 |
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Similar Description - R2A20050ANS_15 |
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