Epson RX8130CE - Backup Power Supply; BAT ) Voltage and a Charge State

15 Battery backup switchover function
RX8130CE Jump to Top / Bottom
ETM50E-07 Seiko Epson Corporation 49
15.9. Backup power supply (V
BAT
) voltage and a charge state
Figure 38 Re-chargeable battery operation during voltage rise and down
2) In case of voltage drop V
DD
> +V
DET
2
V
BAT
low voltage flag
VBLF
-V
DET
4
1) In case of voltage rise  V
DD
 -V
DET
2
Charge is enable +V
DET
3

V
BAT)
and (V
DD

V
BAT
)
+V
DET
3
Charge stop
V
BAT
SW2=OFF
“0”
“1”
3.1 V
Adjustment by register setting is possible
Recharge
-V
DET
3 > V
BAT
Register settings allow to stop or
prevent charging or keep charging
V
BAT
as well above upper limit
(+V
DET
3)
Adjustment by register setting is possible
Charge stop
Charge enable: +V
DET
3  V
BAT
*1
and V
DD
 V
BAT
-V
DET
3