PIC16LF1518-E/SS Microchip Technology, PIC16LF1518-E/SS Datasheet - Page 125

• Manufacturer Part Number: PIC16LF1518-E/SS
• Description: 28-pin, 28KB Flash, 1024B RAM, 10-bit ADC, 2xCCP, SPI, MI2C, EUSART, 1.8V-3.6V 2
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16LF1518-E/SS

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 28KB (16K x 14)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 17x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: *
• Processor Series: PIC16LF151x
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 25
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

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 12-2
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
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’.
12.5.1
The ANSELD register
configure the Input mode of an I/O pin to analog.
Setting the appropriate ANSELD 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 ANSELD bits has no affect on digital out-
put functions. A pin with TRIS clear and ANSELD set will
still operate as a digital output, but the Input mode will be
analog. This can cause unexpected behavior when exe-
cuting read-modify-write instructions on the affected
port.
EXAMPLE 12-4:
 2010 Microchip Technology Inc.
BANKSEL PORTD
CLRF
BANKSEL LATD
CLRF
BANKSEL ANSELD
CLRF
BANKSEL TRISD
MOVLW
MOVWF
Note:
PORTD Registers
(PIC16F1517/1519 only)
12-7). Setting a TRISD bit (= 1) will make the
PORTD
LATD
ANSELD
B’00110000’;Set RD<5:4> as inputs
TRISD
ANSELD REGISTER
The ANSELD register must be initialized
to configure an analog channel as a digital
input. Pins configured as analog inputs
will read ‘0’.
shows how to initialize PORTD.
data
(Register
;
INITIALIZING PORTD
direction
;
;Init PORTD
;Data Latch
;Make RD<7:4> digital
;
;and RD<3:0> as outputs
;
(Register
12-7) controls the PORTD
(Register
register
12-9) is used to
12-6) reads the
is
TRISD
Preliminary
12.5.2
PORTD has no peripheral outputs, so the PORTD
output has no priority function.
PIC16(L)F1516/7/8/9
PORTD FUNCTIONS AND OUTPUT
PRIORITIES
DS41452A-page 125