Datasheet

 2012 Microchip Technology Inc. Preliminary DS25156A-page 15
23LCV1024
5.0 VBAT
The 23LCV1024 features an internal switch that will
maintain the SRAM contents. In the event that the V
CC
supply is not available, the voltage applied to the VBAT
pin serves as the backup supply.
The V
BAT trip point is the point at which the internal
switch operates the device from the VBAT supply and
is typically 1.8V (VTRIP specification D012). When VCC
falls below the VTRIP point the system will continue to
maintain the SRAM contents.
The following conditions apply:
Supply Condition Read/Write Access Powered By
VCC < VTRIP, VCC < VBAT No V
BAT
VCC > VTRIP, VCC < VBAT Yes VCC
VCC > VTRIP, VCC > VBAT Yes VCC