Applied Data Systems Bitsy Plus, Руководство пользователя

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System Specifications
ADS document # 110114-1001A Page 45
6.2 Electrical Specifications
6.2.1 Temperature, Reset, Sleep, Wakeup
Absolute Maximum Ratings
Reset Input (RESET_IN) .............................3.6 V (note 1)
Wakeup Input (/RqOnOff) ............................5.5 V (note2)
Symbol Parameter Min Typ. Max Units
Temperature
Trun
operating temperature -40 +85
°
C
Reset_In (J10.45)
Vrst
trigger voltage (Note 3) 2.7 V
Vprst pull-up voltage Vddx V
Rprst pull-up resistance 47
k
Ω
Sleep (5.3.3)
Vsleep
Sleep trigger voltage (Note 4) 5.4 5.8 V
Vsleep,hyst
Sleep trigger release hysteresis
(Note 5)
0.06 0.25 V
Wakeup: RqOnOff (J3.45)
trq
wakeup pulse duration (Note 6) 100 ms
Vprq pull-up voltage Vddx V
Rprq pull-up resistance 11 k
Ω
Notes:
1. The reset controller can support operating voltages up to 10 VDC. However, such high
voltages on Vddx through the pull-up resistor may damage the system.
2. The /RqOnOff signal is connected to the system controller, which determines this rating
(see section 6.2.7).
3. Short \Reset_In to GND to reset system
4. This is the voltage at VBATT_POS at which the DC_GOOD signal (4.3.7) changes from
high to low, which can trigger the system to go into Sleep mode. Sleep trigger at
DCIN_POS is Vdin (6.2.4).
5. Important! Once Vsleep has been triggered, the input voltage must rise at least
Vsleep,hyst above Vsleep before the voltage detector will restore the DC_GOOD signal.
Make sure that your input voltage is designed to always run above Vsleep,hyst, or
systems that go to sleep may not be able to wake again.
6. Short /RqOnOff to GND to for at least trq to wake up system. A low-level voltage on
/RqOnOff initiates wakeup.