PIC16F1946-E/PT Microchip Technology, PIC16F1946-E/PT Datasheet - Page 153

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PIC16F1946-E/PT

Manufacturer Part Number
PIC16F1946-E/PT
Description
MCU 8BIT 8K FLASH 64TQFP
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr

Specifications of PIC16F1946-E/PT

Core Size
8-Bit
Program Memory Size
14KB (8K x 14)
Core Processor
PIC
Speed
32MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
54
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 17x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
64-TFQFP
Controller Family/series
PIC16F
Eeprom Memory Size
256Byte
Ram Memory Size
512Byte
Cpu Speed
32MHz
No. Of Timers
5
Interface
EUSART, I2C, SPI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC16F1946-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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)
• LCD bias generator
The FVR can be enabled by setting the FVREN bit of
the FVRCON register.
FIGURE 14-1:
 2010 Microchip Technology Inc.
FIXED VOLTAGE REFERENCE
(FVR)
VOLTAGE REFERENCE BLOCK DIAGRAM
CDAFVR<1:0>
ADFVR<1:0>
FVRRDY
FVREN
DD
, with 1.024V,
2
2
+
_
Preliminary
X
X
X
X
X
X
1.024V Fixed
Reference
1
2
4
1
2
4
14.1
The output of the FVR supplied to the ADC,
Comparators, and DAC 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 Section 15.0 “Analog-to-Digital Converter
(ADC) Module” for additional information.
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 Section 16.0 “Digital-to-Analog
Converter (DAC) Module” and Section 17.0 “Com-
parator Module” for additional information.
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 29.0 “Electrical Specifications” for the
minimum delay requirement.
PIC16F/LF1946/47
Independent Gain Amplifiers
FVR Stabilization Period
(To LCD Bias Generator)
(To Comparators, DAC)
(To ADC Module)
FVR VREF
FVR BUFFER1
FVR BUFFER2
DS41414A-page 151

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