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S-1411F20-A8T1U4 Datasheet(PDF) 10 Page - Seiko Instruments Inc

Part # S-1411F20-A8T1U4
Description  Watchdog operation is switchable
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S-1411F20-A8T1U4 Datasheet(HTML) 10 Page - Seiko Instruments Inc

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LOW CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-1410/1411 Series
Rev.2.0_00
10
Electrical Characteristics
Table 9 (1 / 2)
(WEN pin logic active "H" product, VDD = 5.0 V, Ta =
+25°C unless otherwise specified)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Test
Circuit
Detection voltage
*1
−VDET
−VDET(S)
× 0.985
−VDET(S)
−VDET(S)
× 1.015
V
1
Hysteresis width
VHYS
−VDET
× 0.03
−VDET
× 0.05
−VDET
× 0.07
V
1
Current consumption
during operation
ISS1
When watchdog timer operates
3.8
7.8
μA
2
Reset time-out period
tRST
CPOR = 2200 pF
8.7
14.5
20
ms
3
Watchdog time-out period
tWDU
CWDT = 470 pF
15
24.6
34
ms
3
Watchdog double pulse
detection time
tWDL
CWDT = 470 pF
461
769
1077
μs
4
Reset output voltage "H"
VROH
S-1411 Series A / B / C / D /
E / F type only
VDD
− 1.0
V
5
Reset output voltage "L"
VROL
0.4
V
6
Reset output pull-up current
IRUP
VRST
_______
= 0 V,
S-1411 Series A / B / C / D /
E / F type only
−0.85
−0.4
μA
7
Reset output current
IROUT
VDS = 0.4 V,
S-1411 Series
only
VDD = 1.5 V
0.6
1.1
mA
8
VDD = 1.8 V
1.1
1.6
mA
8
VDD = 2.5 V
2.1
2.6
mA
8
VDD = 3.0 V
2.8
3.3
mA
8
Reset output leakage current IRLEAK
VDS = 6.0 V, VDD = 6.0 V,
S-1411 Series only
0.096
μA
9
Watchdog output voltage "H" VWOH
A / B / C / D / E / F type only
VDD
− 1.0
V
10
Watchdog output voltage "L" VWOL
0.4
V
11
Watchdog output
pull-up current
IWUP
VWDO
________
= 0 V,
A / B / C / D / E / F type only
−0.85
−0.4
μA
12
Watchdog output current
IWOUT
VDS = 0.4 V
VDD = 1.5 V
0.6
1.1
mA
13
VDD = 1.8 V
1.1
1.6
mA
13
VDD = 2.5 V
2.1
2.6
mA
13
VDD = 3.0 V
2.8
3.3
mA
13
Watchdog output leakage
current
IWLEAK
VDS = 6.0 V, VDD = 6.0 V
0.096
μA
14
Input pin voltage 1 "H"
VSH1
WEN pin
0.7
× VDD
V
15
Input pin voltage 1 "L"
VSL1
WEN pin
0.3
× VDD
V
15
Input pin voltage 2 "H"
VSH2
W
___
/ T pin, S-1410 Series only
0.7
× VDD
V
15
Input pin voltage 2 "L"
VSL2
W
___
/ T pin, S-1410 Series only
0.3
× VDD
V
15
Input pin voltage 3 "H"
VSH3
WDI pin
0.7
× VDD
V
15
Input pin voltage 3 "L"
VSL3
WDI pin
0.3
× VDD
V
15


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