PIC16F724-E/MV Microchip Technology, PIC16F724-E/MV Datasheet - Page 84

• Manufacturer Part Number: PIC16F724-E/MV
• Description: 7KB Flash Program, 1.8V-5.5V, 16MHz Internal Oscillator, 8b ADC, CCP, I2C/SPI, A
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16F724-E/MV

• Processor Series: PIC16F
• Core: PIC
• Program Memory Type: Flash
• Program Memory Size: 7 KB
• Data Ram Size: 192 B
• Interface Type: I2C, SPI, AUSART
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: UQFN-40
• Development Tools By Supplier: MPLAB IDE Software
• Minimum Operating Temperature: - 40 C
• 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: 36
• Eeprom Size: -
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 14x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Lead Free Status / Rohs Status: Details

PIC16F72X/PIC16LF72X
6.6
PORTE
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’. Example 6-5 shows how to initialize PORTE.
Reading the PORTE register (Register 6-15) 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. RE3 reads ‘0’ when
MCLRE = 1.
The TRISE register (Register 6-16) controls the PORTE
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 6-5:
DS41341E-page 84
BANKSEL PORTE
CLRF
BANKSEL ANSELE
CLRF
BANKSEL TRISE
MOVLW
MOVWF
Note:
Note 1: RE<2:0> and
(1)
PORTE and TRISE Registers
PORTE
ANSELE
B‘00001100’
TRISE
is a 4-bit wide, bidirectional port. The
The ANSELE register must be initialized to
configure an analog channel as a digital
input. Pins configured as analog inputs will
read ‘0’.
implemented on the PIC16F722/723/726/
PIC16LF722/723/726. Read as ‘0’.
INITIALIZING PORTE
;
;Init PORTE
;
;digital I/O
;
;Set RE<2> as an input
;and set RE<1:0>
;as outputs
TRISE<2:0>
are
not
© 2009 Microchip Technology Inc.