S-77100 Datasheet, PDF (11/40 Pages) Seiko Instruments Inc – POWER SEQUENCER

Rev.1.0_01
POWER SEQUENCER
S-77100/77101 Series
Off period On-sequence period
ON
OFF
CDLY
ENBL_A
ENBL_B
ENBL_C
n times^*1
Power-good period Off-sequence period Off period
n times^*1
2.5 V : I/O(1)
1.8 V : I/O(2)
1.5 V : LOGIC
tDLY
tDLY
tDLY
tDLY
tDLY
tDLY
*1. Selectable as the option: 2 times / 4 times / 8 times / 16 times
_______
Figure 9 Timing Chart (S-77101A: Reverse Type, with OFF pin)
Off period On-sequence period
ON
OFF
CDLY
ENBL_A
ENBL_B
ENBL_C
n times^*1
Power-good period Off-sequence period Off period
n times^*1
2.5 V : I/O(1)
1.8 V : I/O(2)
1.5 V : LOGIC
tDLY
tDLY
tDLY
tDLY
tDLY
tDLY
*1. Selectable as the option: 2 times / 4 times / 8 times / 16 times
_______
Figure 10 Timing Chart (S-77101B: Forward Type, with OFF pin)
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