PIC16LF723A-E/SS Microchip Technology, PIC16LF723A-E/SS Datasheet - Page 48
PIC16LF723A-E/SS
Manufacturer Part Number
PIC16LF723A-E/SS
Description
7 KB Flash, 16 MHz Int. Osc, NanoWatt XLP 28 SSOP .209in TUBE
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheet
1.PIC16F722AT-ISS.pdf
(284 pages)
Specifications of PIC16LF723A-E/SS
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
25
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 11x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PIC16F/LF722A/723A
6.2
PORTA is a 8-bit wide, bidirectional port. The
corresponding data direction register is TRISA
(Register 6-3). Setting a TRISA bit (= 1) will make the
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). Example 6-1 shows how to
initialize PORTA.
Reading the PORTA register (Register 6-2) reads the
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.
REGISTER 6-2:
REGISTER 6-3:
DS41417A-page 48
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
TRISA7
R/W-1
R/W-x
RA7
PORTA and the TRISA Registers
RA<7:0>: PORTA I/O Pin bit
1 = Port pin is > V
0 = Port pin is < V
TRISA<7:0>: PORTA Tri-State Control bit
1 = PORTA pin configured as an input (tri-stated)
0 = PORTA pin configured as an output
TRISA6
R/W-x
R/W-1
RA6
PORTA: PORTA REGISTER
TRISA: PORTA TRI-STATE REGISTER
W = Writable bit
W = Writable bit
‘1’ = Bit is set
‘1’ = Bit is set
TRISA5
R/W-x
IH
IL
R/W-1
RA5
TRISA4
R/W-1
R/W-x
RA4
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
TRISA3
R/W-x
R/W-1
The TRISA register (Register 6-3) controls the 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’.
EXAMPLE 6-1:
RA3
BANKSEL PORTA
CLRF
BANKSEL ANSELA
CLRF
BANKSEL TRISA
MOVLW
MOVWF
Note:
PORTA
ANSELA
0Ch
TRISA
The ANSELA register must be initialized to
configure an analog channel as a digital
input. Pins configured as analog inputs will
read ‘0’.
TRISA2
R/W-1
R/W-x
RA2
INITIALIZING PORTA
;
;Init PORTA
;
;digital I/O
;
;Set RA<3:2> as inputs
;and set RA<7:4,1:0>
;as outputs
2010 Microchip Technology Inc.
x = Bit is unknown
x = Bit is unknown
TRISA1
R/W-x
R/W-1
RA1
TRISA0
R/W-1
R/W-x
RA0
bit 0
bit 0
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