S-35710B01A-K8T2U Datasheet, PDF (24/33 Pages) Seiko Instruments Inc – Low current consumption

FOR AUTOMOTIVE 125°C OPERATION 2-WIRE CONVENIENCE TIMER
S-35710 Series
Rev.1.5_00
_______
2. When power supply voltage is raised at RST pin = "H"
_______
_______
Set the RST pin to "L" after the power supply voltage reaches 1.8 V or higher. If the RST pin is set to "L" for 500 ms
o_{__}r_{__}l_{_}o_{__}nger, the oscillation start signal becomes "H", and the crystal oscillation circuit normally oscillates. After that, if the
RST pin is set to "H", the oscillation start signal becomes "L" within_{___}5_{_}0_{__}0_{_} ms, and the oscillation status is maintained.
The current consumption increases as mentioned below while the RST pin is set to "L".
• When the product without a pull-up resistor is selected:
• When the product with a pull-up resistor is selected:
1.7 μA typ.
30 μA typ.
10 ms
1.8 V
(Operation power supply voltage min.)
0.2 V or lower
0
7^*1
RST pin input
Oscillation start signal
Oscillation start signal
"H"  "L"
within 500 ms
Oscillation circuit output
*1. 0 V means that there is no potential difference between the VDD pin and the VSS pin of the S-35710 Series.
_______
Figure 33 When Power Supply Voltage is Raised at RST Pin = "H"
_______
_______
The RST pin has a built-in chattering elimination circuit. To determine the RST pin "H" input, perfor_{_}m_{____}c_{__}ommunication
subsequent to setting the interval of 3.5 periods (0.438 seconds) of clock (8 Hz) or longer after the RST pin changes
from "L" to "H".
_______
_______
Regarding the chattering elimination of the RST pin, refer to " RST Pin".
24