Epson RX-8801SA/JE - Manual (Page 29)

RX − 8801 SA / JE
Page - 26 ETM26E-03
8.7. Backup and Recovery
V DD
t F t R2
Back up
t R1
V CLK
0 V
V DET
Item Symbol Condition Min. Typ. Max. Unit.
Power supply
detection voltage ( 1 )
V
DET
− 2.2 V
Power supply
detection voltage ( 2 )
V
LOW
− 1.6 V
Power supply
drop time
t F
− 2 μs /V
Initial power-up time t R1
− 10 ms /V
1.6V → V DD ≤ 3.6V 5 μs /V
Clock maintenance
power-up time
t R2
1.6V → V DD > 3.6V 15 μs /V