MCP1726T-ADJZEMF Microchip Technology, MCP1726T-ADJZEMF Datasheet - Page 62
MCP1726T-ADJZEMF
Manufacturer Part Number
MCP1726T-ADJZEMF
Description
Regulator, Extended Industrial, HVSON, 8-Pin|
Manufacturer
Microchip Technology
Datasheet
1.MCP1726T-ADJZEMF.pdf
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PIC12F683
9.6
The comparator module also allows the selection of an
internally generated voltage reference for one of the
comparator inputs. The VRCON register, Register 9-3,
controls the voltage reference module shown in
Figure 9-5.
9.6.1
The voltage reference can output 32 distinct voltage
levels, 16 in a high range and 16 in a low range.
The following equations determine the output voltages:
EQUATION 9-1:
FIGURE 9-5:
DS41211A-page 60
V
V
RR
RR
V
DD
=
=
Comparator
CV
Comparator Reference
0 (high range):
1 (low range): CVref
CV
CONFIGURING THE VOLTAGE
REFERENCE
REF
REF
Input
V
=
REN
to
(V
DD
COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
/4) + (VR3:VR0
VR3:VR0
=
16-1 Analog
(VR3:VR0/24)
8R
MUX
X
V
DD
R
Advance Information
/32)
VR3:VR0 = ‘0000’
V
VRR
REN
V
DD
R
16 Stages
9.6.2
The full range of V
the construction of the module. The transistors on the
top and bottom of the resistor ladder network
(Figure 9-5) keep CV
V
clearing the V
the reference voltage is V
and the V
comparator to detect a zero-crossing and not
consume CV
The Voltage Reference is V
the CV
tested absolute accuracy of the Comparator Voltage
Reference can be found in Section 15.0 “Electrical
Specifications”.
DD
. The exception is when the module is disabled by
REF
R
RR
output changes with fluctuations in V
VOLTAGE REFERENCE
ACCURACY/ERROR
REF
(VRCON<5>) bit is set. This allows the
REN
R
module current.
SS
bit (VRCON<7>). When disabled,
to V
REF
2003 Microchip Technology Inc.
DD
SS
from approaching V
DD
cannot be realized due to
when VR<3:0> is ‘0000’
8R
derived and therefore,
VRR
DD
SS
. The
or
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