AC244026 Microchip Technology, AC244026 Datasheet - Page 84
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AC244026
Manufacturer Part Number
AC244026
Description
Processor Extension Pak (PIC16F727-ICE) 200K Device Emulator - Debugger Accessor
Manufacturer
Microchip Technology
Series
-r
Datasheet
1.AC164112.pdf
(302 pages)
Specifications of AC244026
Accessory Type
Debug Interface Module
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
PIC16LF727
- Current page: 84 of 302
- Download datasheet (5Mb)
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.
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