PIC16F1827-E/P Microchip Technology Inc., PIC16F1827-E/P Datasheet - Page 135
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PIC16F1827-E/P
Manufacturer Part Number
PIC16F1827-E/P
Description
7 KB Flash, 384 bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhanced Mid Range Core
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F1826-ISO.pdf
(406 pages)
Specifications of PIC16F1827-E/P
A/d Inputs
12-Channel, 10-Bit
Comparators
2
Cpu Speed
8 MIPS
Eeprom Memory
256 Bytes
Input Output
16
Interface
CAN/I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin PDIP
Programmable Memory
7K Bytes
Ram Size
384 Bytes
Speed
32 MHz
Timers
4-8-bit, 1-16-bit
Voltage, Range
1.8-5.5 V
Standby Current (pic16lf182x)
30 nA @ 1.8 V, Typical
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14.0
The Fixed Voltage Reference, or FVR, is a stable
voltage reference, independent of V
2.048V or 4.096V selectable output levels. The output
of the FVR can be configured to supply a reference
voltage to the following:
• ADC input channel
• ADC positive reference
• Comparator positive input
• Digital-to-Analog Converter (DAC)
• Capacitive Sensing (CPS) module
The FVR can be enabled by setting the FVREN bit of
the FVRCON register.
FIGURE 14-1:
2011 Microchip Technology Inc.
FIXED VOLTAGE REFERENCE
(FVR)
Any peripheral requiring the
VOLTAGE REFERENCE BLOCK DIAGRAM
CDAFVR<1:0>
FVREN
ADFVR<1:0>
(See
Fixed Reference
Table
14-1)
DD
, with 1.024V,
2
2
+
_
1.024V Fixed
Reference
X
X
X
X
X
X
1
2
4
1
2
4
FVRRDY
14.1
The output of the FVR supplied to the ADC,
Comparators, and DAC and CPS is routed through two
independent programmable gain amplifiers. Each
amplifier can be configured to amplify the reference
voltage by 1x, 2x or 4x, to produce the three possible
voltage levels.
The ADFVR<1:0> bits of the FVRCON register are
used to enable and configure the gain amplifier settings
for the reference supplied to the ADC module. Refer-
ence
(ADC) Module”
The CDAFVR<1:0> bits of the FVRCON register are
used to enable and configure the gain amplifier settings
for the reference supplied to the DAC and comparator
module. Reference
Converter (DAC) Module”
parator Module”
Sensing Module”
14.2
When the Fixed Voltage Reference module is enabled, it
requires time for the reference and amplifier circuits to
stabilize. Once the circuits stabilize and are ready for use,
the FVRRDY bit of the FVRCON register will be set. See
Section 30.0 “Electrical Specifications”
minimum delay requirement.
Section 16.0 “Analog-to-Digital Converter
PIC16(L)F1826/27
Independent Gain Amplifiers
FVR Stabilization Period
(To Comparators, DAC, CPS)
(To ADC Module)
FVR BUFFER1
FVR BUFFER2
for additional information.
for additional information.
Section 16.0 “Digital-to-Analog
and
Section 27.0 “Capacitive
and
Section 18.0 “Com-
DS41391D-page 135
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