PIC16LF1517-E/PT Microchip Technology, PIC16LF1517-E/PT Datasheet - Page 128

• Manufacturer Part Number: PIC16LF1517-E/PT
• Description: 40-pin, 14KB Flash, 512B RAM, 10-bit ADC, 2xCCP, SPI, MI2C, EUSART, 1.8V-3.6V 44
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16LF1517-E/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: 36
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 28x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: *
• Processor Series: PIC16LF151x
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 36
• 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

PIC16(L)F1516/7/8/9
12.6
PORTE is a 4-bit wide, bidirectional port. The
corresponding data direction register is TRISE. Setting a
TRISE bit (= 1) will make the corresponding PORTE pin
an input (i.e., put the corresponding output driver in a
High-Impedance mode). Clearing a TRISE bit (= 0) will
make the corresponding PORTE pin an output (i.e.,
enable the output driver and put the contents of the
output latch on the selected pin). The exception is RE3,
which is input only and its TRIS bit will always read as
‘1’.
Reading the PORTE register
the status of the pins, whereas writing to it will write to
the
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
(LATE). RE3 reads ‘0’ when MCLRE = 1.
12.6.1
The ANSELE register
configure the Input mode of an I/O pin to analog.
Setting the appropriate ANSELE 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 ANSELE 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.
The TRISE register
pin output drivers, even when they are being used as
analog inputs. The user should ensure the bits in the
TRISE register are maintained set when using them as
analog inputs. I/O pins configured as analog input always
read ‘0’.
EXAMPLE 12-5:
DS41452A-page 128
BANKSEL PORTE
CLRF
BANKSEL
CLRF
BANKSEL ANSELE
CLRF
BANKSEL TRISE
MOVLW
MOVWF
Note:
Note:
Example 12-5
PORT
PORTE Registers
PORTE
ANSELE
B‘00001100’
TRISE
LATE
LATE
RE<2:0>
available on PIC16(L)F1517/9 only.
ANSELE REGISTER
The ANSELE register must be initialized
to configure an analog channel as a digital
input. Pins configured as analog inputs
will read ‘0’.
latch.
shows how to initialize PORTE.
(Register
INITIALIZING PORTE
and TRISE<2:0>
All
(Register
;
;Init PORTE
;
;digital I/O
;
;Set RE<3:2> as inputs
;and set RE<1:0>
;as outputs
;Data Latch
;
12-20) controls the PORTE
write
(Register
12-22) is used to
operations
12-19) reads
pins
are
Preliminary
are
12.6.2
PORTE has no peripheral outputs, so the PORTE
output has no priority function.
PORTE FUNCTIONS AND OUTPUT
PRIORITIES
 2010 Microchip Technology Inc.