PIC16F1827-I/SO Microchip Technology, PIC16F1827-I/SO Datasheet - Page 120

IC PIC MCU FLASH 4K 18-SOIC

PIC16F1827-I/SO

Manufacturer Part Number
PIC16F1827-I/SO
Description
IC PIC MCU FLASH 4K 18-SOIC
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr

Specifications of PIC16F1827-I/SO

Program Memory Type
FLASH
Program Memory Size
7KB (4K x 14)
Package / Case
18-SOIC (7.5mm Width)
Core Processor
PIC
Core Size
8-Bit
Speed
32MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Eeprom Size
256 x 8
Ram Size
384 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
384 B
Interface Type
I2C/SPI/UART
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
15
Number Of Timers
5
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005
Minimum Operating Temperature
- 40 C
On-chip Adc
12-ch x 10-bit
Package
18SOIC W
Device Core
PIC
Family Name
PIC16
Maximum Speed
32 MHz
Operating Supply Voltage
3.3|5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

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Quantity
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PIC16F1827-I/SO
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0
PIC16(L)F1826/27
12.2
PORTA is a 8-bit wide, bidirectional port. The
corresponding data direction register is TRISA
(Register
corresponding PORTA pin an input (i.e., disable the
output driver). Clearing a TRISA bit (= 0) will make the
corresponding PORTA pin an output (i.e., enables
output driver and puts the contents of the output latch
on the selected pin). The exception is RA5, which is
input only and its TRIS bit will always read as ‘1’.
Example 12-1
Reading the PORTA 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 (LATA).
The TRISA register
PORTA pin output drivers, even when they are being
used as analog inputs. The user should ensure the bits
in the TRISA register are maintained set when using
them as analog inputs. I/O pins configured as analog
input always read ‘0’.
12.2.1
Each of the PORTA pins has an individually configurable
internal weak pull-up. Control bit WPUA<5> enables or
disables the pull-up (see
is automatically turned off when the port pin is configured
as an output. The pull-up is disabled on a Power-on Reset
by the WPUEN bit of the OPTION register.
12.2.2
The ANSELA register
configure the Input mode of an I/O pin to analog.
Setting the appropriate ANSELA 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 ANSELA 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.
DS41391D-page 120
Note:
PORTA Registers
12-4). Setting a TRISA bit (= 1) will make the
WEAK PULL-UPS
ANSELA REGISTER
The ANSELA 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.
Register
(Register
(Register
(Register
12-6). The weak pull-up
12-4) controls the
12-7) is used to
12-3) reads the
 2011 Microchip Technology Inc.

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