Datasheet

 2013 Microchip Technology Inc. DS22331A-page 35
MCP19111
6.0 CONFIGURING THE MCP19111
The MCP19111 is an analog controller with digital
peripheral. This means that device configuration is
handled through register settings instead of adding
external components. The following sections detail how
to set the analog control registers.
6.1 Input Under Voltage Lockout
The VINLVL register contains the digital value that sets
the input under voltage lockout. When the input voltage
on the V
IN
pin to the MCP19111 is below this pro-
grammed level, the INTCON<VINIF> flag will be set.
This bit is automatically cleared when the MCP19111
V
IN
voltage rises above this programmed level.
The VINLVL<UVLOEN> bit must be set to enable the
input under voltage lockout circuitry.
Note: The VINIF interrupt flag bit is set when an
interrupt condition occurs, regardless of
the state of its corresponding enable bit or
the Global Enable bit, GIE, of the INTCON
register.
REGISTER 6-1: VINLVL: INPUT UNDER VOLTAGE LOCKOUT CONTROL REGISTER
R/W-0 U-0 R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
UVLOEN
— UVLO5 UVLO4 UVLO3 UVLO2 UVLO1 UVLO0
bit 7 bit 0
Legend:
R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’
-n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown
bit 7 UVLOEN: Under Voltage Lockout DAC Control bit
1 = Under Voltage Lockout DAC is enabled
0 = Under Voltage Lockout DAC is disabled
bit 6 Unimplemented: Read as ‘0’
bit 5-0 UVLO<5:0>: Under Voltage Lockout Configuration bits
UVLO<5:0> = 26.5*ln(UVLO
SET_POINT
/4)