PIC16F1526T-I/PT Microchip Technology, PIC16F1526T-I/PT Datasheet - Page 128

• Manufacturer Part Number: PIC16F1526T-I/PT
• Description: 64-pin, 14KB Flash, 768B RAM, 10-bit ADC, 10xCCP, 2xSPI, 2xMI2C, 2xEUSART, 2.3V-
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16F1526T-I/PT

• 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: 54
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.3 V ~ 5.5 V
• Data Converters: A/D 30x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC16(L)F1526/27
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 12-1
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 ’.
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 effect 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.
DS41458B-page 128
Note:
PORTD Registers
12-15). Setting a TRISD bit (= 1 ) will make the
ANSELD REGISTER
The ANSELD bits default to the Analog
mode after Reset. To use any pins as
digital general purpose or peripheral
inputs, the corresponding ANSEL bits
must be initialized to ‘ 0 ’ by user software.
shows how to initialize an I/O port.
data
direction
(Register
(Register
(Register
12-15) controls the
register
12-17) is used to
12-14) reads the
is
TRISD
Preliminary
12.5.2
Each PORTD pin is multiplexed with other functions. The
pins, their combined functions and their output priorities
are shown in
When multiple outputs are enabled, the actual pin
control goes to the peripheral with the highest priority.
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
TABLE 12-9:
Note 1:
Pin Name
2:
RD0
RD1
RD2
RD3
RD4
RD5
RD6
RD7
Priority listed from highest to lowest.
RD5 and RD6 read the I
I
PORTD FUNCTIONS AND OUTPUT
PRIORITIES
2
Table
C mode is enabled.
PORTD OUTPUT PRIORITY
12-9.
 2011 Microchip Technology Inc.
Function Priority
Table
RD0
RD1
RD2
RD3
SDO2
RD4
SDA2
RD5
SCL2
SCK2
RD6
RD7
12-9.
2
C ST input when
(2)
(2)
(1)