PIC16F1946-E/PT Microchip Technology, PIC16F1946-E/PT Datasheet - Page 140

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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
PIC16F/LF1946/47
12.7
PORTF is a 8-bit wide, bidirectional port. The
corresponding
(Register 12-21). Setting a TRISF bit (= 1) will make the
corresponding PORTF pin an input (i.e., put the
corresponding output driver in a High-Impedance mode).
Clearing a TRISF bit (= 0) will make the corresponding
PORTF pin an output (i.e., enable the output driver and
put the contents of the output latch on the selected pin).
Example 12-4 shows how to initialize PORTF.
Reading the PORTF register (Register 12-13) reads the
status of the pins, whereas writing to it will write to the
PORT latch. All write operations are read-modify-write
operations. Therefore, a write to a port implies that the
port pins are read, this value is modified and then written
to the PORT data latch (LATF).
The TRISF register (Register 12-14) controls the
PORTF pin output drivers, even when they are being
used as analog inputs. The user should ensure the bits
in the TRISF register are maintained set when using
them as analog inputs. I/O pins configured as analog
input always read ‘0’.
12.7.1
The ANSELF register (Register 12-23) is used to
configure the Input mode of an I/O pin to analog.
Setting the appropriate ANSELF bit high will cause all
digital reads on the pin to be read as ‘0’ and allow
analog functions on the pin to operate correctly.
The state of the ANSELF bits has no affect on digital
output functions. A pin with TRIS clear and ANSEL set
will still operate as a digital output, but the Input mode
will be analog. This can cause unexpected behavior
when executing read-modify-write instructions on the
affected port.
EXAMPLE 12-6:
DS41414A-page 138
BANKSEL
CLRF
BANKSEL
CLRF
BANKSEL
CLRF
BANKSEL
MOVLW
MOVWF
Note:
PORTF Registers
PORTF
PORTF
LATF
LATF
ANSELF
ANSELF
TRISF
B'11110000' ;Set RF<7:4> as inputs
TRISF
ANSELF REGISTER
The ANSELF register must be initialized to
configure an analog channel as a digital
input. Pins configured as analog inputs will
read ‘0’.
data
INITIALIZING PORTF
direction
;
;Init PORTF
;Data Latch
;
;
;digital I/O
;
;and set RF<3:0> as
;outputs
register
is
TRISF
Preliminary
 2010 Microchip Technology Inc.

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