S-1410 Datasheet, PDF (11/36 Pages) Seiko Instruments Inc – Watchdog operation is switchable

LOW CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.0_00
S-1410/1411 Series
Table 9 (2 / 2)
(WEN pin logic active "H" product, V_DD = 5.0 V, Ta = +25°C unless otherwise specified)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Test
Circuit
A/B/C/
Input pin current 1 "H"
I_SH1
WEN pin,
V_DD = 6.0 V,
Input pin voltage = 6.0 V
G/H/I
type
D/E/F/
J/K/L
−
−0.1
0.3
−
1.0
μA 15
0.1
μA 15
type
Input pin current 1 "L"
Input pin current 2 "H"
Input pin current 2 "L"
Input pin current 3 "H"
I_SL1
WEN pin, V_DD = 6.0 V,
Input pin voltage = 0 V
−0.1
−
0.1
μA 15
___
I_SH2
W / T pin, S-1410 Series only,
V_{___DD} = 6.0 V, Input pin voltage = 6.0 V
−
0.3
1.0
μA 15
I_SL2
W / T pin, S-1410 Series only,
V_DD = 6.0 V, Input pin voltage = 0 V
−0.1
−
0.1
μA 15
I_SH3
WDI pin, V_DD = 6.0 V,
Input pin voltage = 6.0 V
−
0.3
1.0
μA 15
Input pin current 3 "L"
I_SL3
WDI pin, V_DD = 6.0 V,
Input pin voltage = 0 V
−0.1
−
0.1
μA 15
Input pulse width "H"^*2
Input pulse width "L"^*2
t_high1
t_low1
−
1.5
−
−
μs
15
−
1.5
−
−
μs
15
Watchdog output delay time t_WOUT
−
−
25
40
μs
3
Reset output delay time
t_ROUT
−
−
25
40
μs
3
Input setup time
t_iset
−
1.0
−
−
μs
3
*1. −V_DET: Actual detection voltage, −V_DET(S): Set detection voltage
*2. The input pulse width "H" (t_high1) and the input pulse width "L" (t_low1) are defined as shown in Figure 7.
Inputs to the WEN pin and the WDI pin should be greater than or equal to the min. value specified in " Electrical
Characteristics".
thigh1
WEN
VSH1
VSL1
VSH1
thigh1
tlow1
VSL1
WDI
VSH3
VSL3
VSH3
tlow1
Figure 7
VSL3
11