PIC12F609-E/MF Microchip Technology, PIC12F609-E/MF Datasheet - Page 74
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PIC12F609-E/MF
Manufacturer Part Number
PIC12F609-E/MF
Description
1.75KB Flash, 64B RAM, 6 I/O, 8MHz Internal Oscillator 8 DFN 3x3mm TUBE
Manufacturer
Microchip Technology
Series
PIC® 12Fr
Datasheets
1.PIC12F609T-ISN.pdf
(212 pages)
2.PIC12F609T-ISN.pdf
(8 pages)
3.PIC12F609T-ISN.pdf
(26 pages)
4.PIC12F609T-ISN.pdf
(8 pages)
Specifications of PIC12F609-E/MF
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
5
Program Memory Size
1.75KB (1K x 14)
Program Memory Type
FLASH
Ram Size
64 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
8-DFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC164324 - MODULE SKT FOR MPLAB 8DFN/16QFN
Eeprom Size
-
Data Converters
-
Connectivity
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PIC12F609/615/617/12HV609/615
9.10
The Comparator Voltage Reference module provides
an internally generated voltage reference for the
comparators. The following features are available:
• Independent from Comparator operation
• 16-level voltage range
• Output clamped to V
• Ratiometric with V
• Fixed Reference (0.6)
The VRCON register (Register 9-3) controls the
Voltage Reference module shown in Register 9-6.
9.10.1
The comparator voltage reference is independent of
the comparator configuration. Setting the VREN bit of
the VRCON register will enable the voltage reference.
9.10.2
The
voltage levels in each range. Range selection is
controlled by the VRR bit of the VRCON register. The
16 levels are set with the VR<3:0> bits of the VRCON
register.
The CV
following equations:
EQUATION 9-1:
The full range of V
the construction of the module. See Figure 9-6.
DS41302D-page 74
V
V
CV
RR
RR
REF
=
=
Comparator Voltage Reference
REF
CV
CV
0 (high range):
1 (low range):
INDEPENDENT OPERATION
OUTPUT VOLTAGE SELECTION
voltage reference has 2 ranges with 16
REF
REF
output voltage is determined by the
=
=
SS
DD
(VR<3:0>/24)
(V
to V
CV
SS
DD
DD
/4) +
REF
cannot be realized due to
OUTPUT VOLTAGE
(VR<3:0> V
V
DD
DD
/32)
9.10.3
The CV
power consumption by configuring VRCON as follows:
• FVREN = 0
This allows the comparator to detect a zero-crossing
while not consuming additional CV
9.10.4
The comparator voltage reference is V
therefore, the CV
V
Voltage Reference can be found in Section 16.0
“Electrical Specifications”.
9.10.5
The fixed voltage reference is independent of V
a nominal output voltage of 0.6V. This reference can be
enabled by setting the FVREN bit of the VRCON
register to ‘1’. This reference is always enabled when
the HFINTOSC oscillator is active.
9.10.6
When the Fixed Voltage Reference module is enabled,
it will require some time for the reference and its
amplifier circuits to stabilize. The user program must
include a small delay routine to allow the module to
settle. See Section 16.0 “Electrical Specifications”
for the minimum delay requirement.
9.10.7
Multiplexers on the output of the Voltage Reference
module enable selection of either the CV
voltage reference for use by the comparators.
Setting the CMVREN bit of the VRCON register
enables current to flow in the CV
and selects the CV
ator. Clearing the CMVREN bit selects the fixed voltage
for use by the Comparator.
When the CMVREN bit is cleared, current flow in the
CV
drain of the voltage reference peripheral.
DD
REF
. The tested absolute accuracy of the Comparator
voltage divider is disabled minimizing the power
REF
OUTPUT CLAMPED TO V
OUTPUT RATIOMETRIC TO VDD
FIXED VOLTAGE REFERENCE
FIXED VOLTAGE REFERENCE
STABILIZATION PERIOD
VOLTAGE REFERENCE
SELECTION
output voltage can be set to Vss with no
REF
REF
output changes with fluctuations in
voltage for use by the Compar-
2010 Microchip Technology Inc.
REF
REF
module current.
DD
voltage divider
SS
REF
derived and
DD
or fixed
, with
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