Epson RX4111CE - Table 47 INIEN, SWSEL Combination; Table 48 the Timing of VDET1

14. How to use

RX4111CE Jump to Top / Bottom
ETM62E-02 Seiko Epson Corporation 40
3) SWSEL1, SWSEL0 bit
When user set INIEN to 0, it is locked status of a built-in MOS switch
Table 47 INIEN, SWSEL combination
INIEN
SWSEL1
SWSEL0
SW
SPI disable
control
comment
0
0
1
OFF
OFF
Default
1
0
ON
OFF
Battery backup switchover function: OFF
0
0
OFF
OFF
Do not select this combination
1
1
OFF
OFF
Do not select this combination
1
1
1
OFF
ON
SPI-Bus interface: ON
Other than (1,1)
Auto control
ON
Battery backup switchover function: ON
When using a non-re-chargeable battery, it is necessary to install a charge protection diode externally.
Figure 30 Battery backup switchover control (Initial power on)
Voltage detection intermittent timing
Table 48 The timing of VDET1
Power supply

DD


DD

V
BAT
(Backup mode)

DET1

Always ON

