PIC18F4431-E/ML Microchip Technology, PIC18F4431-E/ML Datasheet - Page 247
PIC18F4431-E/ML
Manufacturer Part Number
PIC18F4431-E/ML
Description
IC MCU FLASH 8KX16 44QFN
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F818-ISO.pdf
(6 pages)
3.PIC18F2331-ISO.pdf
(392 pages)
4.PIC18F2331-ISO.pdf
(8 pages)
5.PIC18F2331-ISO.pdf
(6 pages)
6.PIC18F2331-ISO.pdf
(16 pages)
7.PIC18LF2331-ISO.pdf
(40 pages)
Specifications of PIC18F4431-E/ML
Core Processor
PIC
Core Size
8-Bit
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 Size
16KB (8K x 16)
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
44-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PIC16F818-ISO PDF datasheet #2
- PIC18F2331-ISO PDF datasheet #3
- PIC18F2331-ISO PDF datasheet #4
- PIC18F2331-ISO PDF datasheet #5
- PIC18F2331-ISO PDF datasheet #6
- PIC18LF2331-ISO PDF datasheet #7
- Current page: 247 of 392
- Download datasheet (4Mb)
21.1
The A/D Converter has two types of conversions, two
modes of operation and eight different Sequencing
modes. These features are controlled by the ACONV
bit (ADCON0<5>), ACSCH bit (ADCON0<4>) and
ACMOD<1:0> bits (ADCON0<3:2>). In addition, the
A/D channels are divided into four groups as defined
in the ADCHS register.
sequence configurations as controlled by the ACSCH
and ACMOD<1:0> bits.
21.1.1
Two types of conversions exist in the high-speed 10-bit
A/D Converter module that are selected using the
ACONV bit. Single-Shot mode allows a single conversion
or sequence to be enabled when ACONV = 0. At the end
of the sequence, the GO/DONE bit will be automatically
cleared and the interrupt flag, ADIF, will be set. When
using
Simultaneous mode, STNM2, acquisition time must be
used to ensure proper conversion of the analog input
signals.
TABLE 21-1:
2010 Microchip Technology Inc.
Multi-Channel Sequential Mode 1
(SEQM1)
Multi-Channel Sequential Mode 2
(SEQM2)
Multi-Channel Simultaneous Mode 1
(STNM1)
Multi-Channel Simultaneous Mode 2
(STNM2)
Single Channel Mode 1 (SCM1)
Single Channel Mode 2 (SCM2)
Single Channel Mode 3 (SCM3)
Single Channel Mode 4 (SCM4)
Single-Shot
Configuring the A/D Converter
CONVERSION TYPE
Mode
AUTO-CONVERSION SEQUENCE CONFIGURATIONS
mode
Table 21-1
and
configured
ACSCH ACMOD<1:0>
shows the
1
1
1
1
0
0
0
0
PIC18F2331/2431/4331/4431
for
00
01
10
11
00
01
10
11
Continuous Loop mode allows the defined sequence to
be executed in a continuous loop when ACONV = 1. In
this mode, either the user can trigger the start of
conversion by setting the GO/DONE bit, or one of the
A/D triggers can start the conversion. The interrupt flag,
ADIF, is set based on the configuration of the bits,
ADRS<1:0> (ADCON3<7:6>). In Simultaneous modes,
STNM1 and STNM2 acquisition time must be config-
ured to ensure proper conversion of the analog input
signals.
21.1.2
The ACSCH bit (ADCON0<4>) controls how many
channels are used in the configured sequence. When
clear, the A/D is configured for single channel conver-
sion and will convert the group selected by the
ACMOD<1:0> bits and the channel selected by the
GxSEL<1:0> bits (ADCHS register). When ACSCH = 1,
the A/D is configured for multiple channel conversion
and the sequence is defined by ACMOD<1:0>.
Groups A and B are sampled and converted
sequentially.
Groups A, B, C and D are sampled and converted
sequentially.
Groups A and B are sampled simultaneously and
converted sequentially.
Groups A and B are sampled simultaneously, then
converted sequentially. Then, Group C and D are
sampled simultaneously, then converted
sequentially.
Group A is sampled and converted.
Group B is sampled and converted.
Group C is sampled and converted.
Group D is sampled and converted.
CONVERSION MODE
Description
DS39616D-page 247
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