PIC18F4431-E/P Microchip Technology, PIC18F4431-E/P Datasheet - Page 124

• Manufacturer Part Number: PIC18F4431-E/P
• Description: IC MCU FLASH 8KX16 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4431-E/P

• Core Size: 8-Bit
• Program Memory Size: 16KB (8K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 9x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC18
• No. Of I/o's: 36
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 768Byte
• Cpu Speed: 40MHz
• No. Of Timers: 4
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: EUSART, I2C, SPI, SSP
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 1 x 8
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 9 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DVA18XP400 - DEVICE ADAPTER 18F4220 PDIP 40LDACICE0206 - ADAPTER MPLABICE 40P 600 MIL
• Lead Free Status / Rohs Status: Details

PIC18F2331/2431/4331/4431
11.5
PORTE is a 4-bit wide, bidirectional port. Three pins
(RE0/AN6, RE1/AN7 and RE2/AN8) are individually
configurable as inputs or outputs. These pins have
Schmitt Trigger input buffers. When selected as an
analog input, these pins will read as ‘0’s.
The 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., put the contents of the output latch on the selected
pin).
TRISE controls the direction of the RE pins, even when
they are being used as analog inputs. The user must
make sure to keep the pins configured as inputs when
using them as analog inputs.
The Data Latch register (LATE) is also memory
mapped. Read-modify-write operations on the LATE
register read and write the latched output value for
PORTE.
The fourth pin of PORTE (MCLR/V
only pin available for PIC18F4331/4431 devices. Its
operation is controlled by the MCLRE Configuration bit
REGISTER 11-1:
DS39616D-page 124
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-3
bit 2
bit 1
bit 0
Note:
Note:
U-0
—
PORTE, TRISE and LATE
Registers
On a Power-on Reset, RE<2:0> are
configured as analog inputs.
PORTE is only available on PIC18F4331/
4431 devices.
Unimplemented: Read as ‘0’
TRISE2: RE2 Direction Control bit
1 = Input
0 = Output
TRISE1: RE1 Direction Control bit
1 = Input
0 = Output
TRISE0: RE0 Direction Control bit
1 = Input
0 = Output
U-0
—
TRISE REGISTER
W = Writable bit
‘1’ = Bit is set
U-0
PP
—
/RE3) is an input
U-0
—
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
in Configuration Register 3H (CONFIG3H<7>). When
selected as a port pin (MCLRE = 0), it functions as a
digital input-only pin. As such, it does not have TRIS or
LAT bits associated with its operation. Otherwise, it
functions as the device’s master clear input. In either
configuration, RE3 also functions as the programming
voltage input during programming.
EXAMPLE 11-5:
11.5.1
For PIC18F2331/2431 devices, PORTE is not available.
It is only available for PIC18F4331/4431 devices.
U-0
CLRF
CLRF
MOVLW
MOVWF
BCF
MOVLW
MOVWF
—
Note:
PORTE
LATE
0x3F
ANSEL0
ANSEL1, 0
0x03
TRISE
On a Power-on Reset, RE3 is enabled as a
digital input only if Master Clear functionality
is disabled.
PORTE IN 28-PIN DEVICES
TRISE2
R/W-1
INITIALIZING PORTE
; Initialize PORTE by
; clearing output
; data latches
; Alternate method
; to clear output
; data latches
; Configure A/D
; for digital inputs
;
; Value used to
; initialize data
; direction
; Set RE<0> as input
; RE<1> as output
; RE<2> as input
 2010 Microchip Technology Inc.
x = Bit is unknown
TRISE1
R/W-1
TRISE0
R/W-1
bit 0