PIC16F1947-I/PT Microchip Technology Inc., PIC16F1947-I/PT Datasheet - Page 136

• Manufacturer Part Number: PIC16F1947-I/PT
• Description: 64 TQFP 10x10x1mm TRAY28KB Flash, 1KB RAM, 256B EEPROM, LCD, 1.8-5.5V
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F1947-I/PT

• A/d Inputs: 17-Channel, 10-Bit
• Comparators: 3
• Cpu Speed: 8 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 54
• Interface: CAN/I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 64-pin TQFP
• Programmable Memory: 28K Bytes
• Ram Size: 1K Bytes
• Speed: 32 MHz
• Timers: 4-8-bit, 1-16-bit
• Voltage, Range: 1.8-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16F/LF1946/47
12.5
PORTD is a 8-bit wide, bidirectional port. The
corresponding
(Register
corresponding PORTD pin an input (i.e., put the
corresponding output driver in a High-Impedance mode).
Clearing a TRISD bit (= 0) will make the corresponding
PORTD pin an output (i.e., enable the output driver and
put the contents of the output latch on the selected pin).
Example 12-4
Reading the PORTD register
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 (LATD).
The TRISD register
PORTD pin output drivers, even when they are being
used as analog inputs. The user should ensure the bits
in the TRISD register are maintained set when using
them as analog inputs. I/O pins configured as analog
input always read ‘0’.
EXAMPLE 12-4:
DS41414B-page 136
BANKSEL
CLRF
BANKSEL
CLRF
BANKSEL
MOVLW
MOVWF
PORTD Registers
12-13). Setting a TRISD bit (= 1) will make the
PORTD
PORTD
LATD
LATD
TRISD
B'11110000' ;Set RD<7:4> as inputs
TRISD
shows how to initialize PORTD.
data
INITIALIZING PORTD
direction
(Register
;
;Init PORTD
;Data Latch
;
;
;and set RD<3:0> as
;outputs
(Register
12-14) controls the
register
12-13) reads the
is
TRISD
Preliminary
12.5.1
Each PORTD pin is multiplexed with other functions. The
pins, their combined functions and their output priorities
are briefly described here. For additional information,
refer to the appropriate section in this data sheet.
When multiple outputs are enabled, the actual pin
control goes to the peripheral with the lowest number in
the following lists.
Analog input and some digital input functions are not
included in the list below. These input functions can
remain active when the pin is configured as an output.
Certain digital input functions override other port
functions and are included in the priority list.
RD0
1.
2.
RD1
1.
2.
RD2
1.
2.
RD3
1.
2.
RD4
1.
2.
3.
RD5
1.
2.
3.
RD6
1.
2.
3.
RD7
1.
2.
SEG0 (LCD)
P2D (CCP)
SEG1 (LCD)
P2C (CCP)
P2B (CCP)
SEG2 (LCD)
SEG3 (LCD)
P3C (CCP)
SEG4 (LCD)
P3D (CCP)
SDO2 (SSP2)
SEG5 (LCD)
P1C (CCP)
SDI2/SDA2 (SSP2)
SEG5 (LCD)
P1B (CCP)
SCK2/SCL2 (SSP2)
SEG7 (LCD)
SS2 (SSP2)
PORTD FUNCTIONS AND OUTPUT
PRIORITIES
 2010 Microchip Technology Inc.