PIC16F1526-E/MR Microchip Technology, PIC16F1526-E/MR Datasheet - Page 137

• Manufacturer Part Number: PIC16F1526-E/MR
• 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 PIC16F1526-E/MR

• 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 ~ 125°C
• Package / Case: 64-VFQFN Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

12.8
PORTG is a 6-bit wide, bidirectional port. The
corresponding data direction register is TRISG
(Register
corresponding PORTG pin an input (i.e., disable the
output driver). Clearing a TRISG bit (= 0 ) will make the
corresponding PORTG pin an output (i.e., enables
output driver and puts the contents of the output latch
on the selected pin). The exception is RG5, which is
input only and its TRIS bit will always read as ‘ 1 ’.
Example 12-1
Reading the PORTG 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
(LATG).
The TRISG register
PORTG pin output drivers, even when they are being
used as analog inputs. The user should ensure the bits
in the TRISG register are maintained set when using
them as analog inputs. I/O pins configured as analog
input always read ‘ 0 ’.
12.8.1
The ANSELG register
configure the Input mode of an I/O pin to analog.
Setting the appropriate ANSELG 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 ANSELG bits has no effect 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.
 2011 Microchip Technology Inc.
Note:
PORT
PORTG Registers
12-29). Setting a TRISG bit (= 1 ) will make the
ANSELG REGISTER
The ANSELG 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.
latch.
(Register
All
(Register
write
(Register
12-29) controls the
12-31) is used to
operations
12-28) reads
Preliminary
are
12.8.2
Each PORTG 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 functions, such as ADC, are not shown in
the priority lists. These inputs are active when the I/O
pin is set for Analog mode using the ANSELx registers.
Digital output functions may control the pin when it is in
Analog mode with
TABLE 12-16: PORTG OUTPUT PRIORITY
Note 1:
Pin Name
PIC16(L)F1526/27
RG0
RG1
RG2
RG3
RG4
RG5
Priority listed from highest to lowest.
PORTG FUNCTIONS AND OUTPUT
PRIORITIES
Table
Table
12-16.
12-16.
Function Priority
CCP3
RG0
CK2
TX2
RG1
DT2
RG2
CCP4
RG3
CCP5
RG4
Input only pin
DS41458B-page 137
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