PIC16F1827-I/ML Microchip Technology Inc., PIC16F1827-I/ML Datasheet - Page 117
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PIC16F1827-I/ML
Manufacturer Part Number
PIC16F1827-I/ML
Description
28 QFN 6x6mm TUBE, 7 KB Flash, 384 bytes RAM, 32 MHz Int. Osc, 16 I/0, Enhanced
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F1826-ISO.pdf
(406 pages)
Specifications of PIC16F1827-I/ML
A/d Inputs
12-Channel, 10-Bit
Comparators
2
Cpu Speed
8 MIPS
Eeprom Memory
256 Bytes
Input Output
16
Interface
CAN/I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin QFN
Programmable Memory
7K Bytes
Ram Size
384 Bytes
Speed
32 MHz
Timers
4-8-bit, 1-16-bit
Voltage, Range
1.8-5.5 V
Standby Current (pic16lf182x)
30 nA @ 1.8 V, Typical
Lead Free Status / Rohs Status
RoHS Compliant part
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12.0
Depending on the device selected and peripherals
enabled, there are two ports available. In general,
when a peripheral is enabled, that pin may not be used
as a general purpose I/O pin.
Each port has three registers for its operation. These
registers are:
• TRISx registers (data direction register)
• PORTx registers (reads the levels on the pins of
• LATx registers (output latch)
Some ports may have one or more of the following
additional registers. These registers are:
• ANSELx (analog select)
• WPUx (weak pull-up)
TABLE 12-1:
The Data Latch (LATx registers) is useful for
read-modify-write operations on the value that the I/O
pins are driving.
A write operation to the LATx register has the same
effect as a write to the corresponding PORTx register.
A read of the LATx register reads of the values held in
the I/O PORT latches, while a read of the PORTx
register reads the actual I/O pin value.
Ports with analog functions also have an ANSELx
register which can disable the digital input and save
power. A simplified model of a generic I/O port, without
the interfaces to other peripherals, is shown in
Figure
2011 Microchip Technology Inc.
Device
PIC16(L)F1826
PIC16(L)F1827
the device)
12-1.
I/O PORTS
PORT AVAILABILITY PER
DEVICE
●
●
●
●
●
FIGURE 12-1:
EXAMPLE 12-1:
; This code example illustrates
; initializing the PORTA register. The
; other ports are initialized in the same
; manner.
BANKSEL PORTA
CLRF
BANKSEL LATA
CLRF
BANKSEL ANSELA
CLRF
BANKSEL TRISA
MOVLW
MOVWF
To peripherals
Write PORTx
Write LATx
Data Bus
Read PORTx
PIC16(L)F1826/27
PORTA
LATA
ANSELA
B'00111000' ;Set RA<5:3> as inputs
TRISA
Data Register
D
CK
Read LATx
ANSELx
GENERIC I/O PORT
OPERATION
INITIALIZING PORTA
Q
;
;Init PORTA
;Data Latch
;
;
;digital I/O
;
;and set RA<2:0> as
;outputs
TRISx
DS41391D-page 117
V
V
DD
SS
I/O pin
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