 English |
|
|
|
|
|
|
|
| S-19400 Datasheet, PDF (25/36 Pages) Seiko Instruments Inc – Watchdog operation voltage range | |||
| |||
| ◁ |
FOR AUTOMOTIVE 125°C OPERATION LOW CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.1_00
S-19400/19401 Series
ï® Characteristics (Typical Data)
1. Current consumption during operation (ISS1) vs. Input voltage (VDD)
WDT = OFF, âVDET(S) = 4.0 V, Ta = +25°C
5.0
4.0
3.0
2.0
1.0
0.0
0123456
VDD [V]
WDT = ON, âVDET(S) = 4.0 V, Ta = +25°C, WDI input
5.0
4.5 Ta = +125ï°C
Ta = ï40ï°C
4.0
Ta = +25ï°C
3.5
3.0
4.0 4.5 5.0 5.5 6.0 6.5
VDD [V]
2. Current consumption during operation (ISS1) vs. Temperature (Ta)
WDT = ON, âVDET(S) = 4.0 V, VDD = 5.0 V, WDI input
5.0
4.0
3.0
2.0
1.0
0.0
ï40 ï25 0
25 50 75 100 125
Ta [ï°C]
3. Detection voltage (âVDET), Release voltage (+VDET) vs. Temperature (Ta)
4.5
+VDET
âVDET(S) = 4.0 V
4.0
ïVDET
3.5
3.0
ï40 ï25 0
25 50 75 100 125
Ta [ï°C]
4. Reset time-out period (tRST) vs. Temperature (Ta)
VDD = 5.0 V, CPOR = 2200 pF
40
5. Watchdog time-out period (tWDU) vs. Temperature (Ta)
VDD = 5.0 V, CWDT = 470 pF
40
30
30
20
20
10
10
0
ï40 ï25 0
25 50 75 100 125
Ta [ï°C]
0
ï40 ï25 0
25 50 75 100 125
Ta [ï°C]
6. Reset output delay time (tROUT) vs. Temperature (Ta)
VDD = âVDET(S) + 1.0 V â âVDET(S) â 1.0 V,
CPOR = 2200 pF
40
30
20
10
0
ï40 ï25 0
25 50 75 100 125
Ta [ï°C]
7. Watchdog output delay time (tWOUT) vs. Temperature (Ta)
VDD = 5.0 V, CWDT = 470 pF
40
30
20
10
0
ï40 ï25 0
25 50 75 100 125
Ta [ï°C]
25
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese