PIC18F46J50-I/PT Microchip Technology, PIC18F46J50-I/PT Datasheet - Page 345

IC PIC MCU FLASH 64KB 44-TQFP

PIC18F46J50-I/PT

Manufacturer Part Number
PIC18F46J50-I/PT
Description
IC PIC MCU FLASH 64KB 44-TQFP
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets

Specifications of PIC18F46J50-I/PT

Core Size
8-Bit
Program Memory Size
64KB (32K x 16)
Core Processor
PIC
Speed
48MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
34
Program Memory Type
FLASH
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
2.15 V ~ 3.6 V
Data Converters
A/D 13x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Controller Family/series
PIC18
No. Of I/o's
22
Ram Memory Size
3.6875KB
Cpu Speed
48MHz
No. Of Timers
2
No. Of Pwm Channels
2
Package
44TQFP
Device Core
PIC
Family Name
PIC18
Maximum Speed
48 MHz
Operating Supply Voltage
2.5|3.3 V
Data Bus Width
8 Bit
Interface Type
I2C/SPI/USART/USB
On-chip Adc
13-chx10-bit
Number Of Timers
5
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC164330 - MODULE SKT FOR 44TQFP 18F45J10
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

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0
After the A/D module has been configured as desired,
the selected channel must be acquired before the
conversion is started. The analog input channels must
have their corresponding TRIS bits selected as an
input. To determine acquisition time, see Section 20.1
“A/D Acquisition Requirements”. After this acquisi-
tion time has elapsed, the A/D conversion can be
started. An acquisition time can be programmed to
occur between setting the GO/DONE bit and the actual
start of the conversion.
The following steps should be followed to do an A/D
conversion:
1.
FIGURE 20-2:
© 2009 Microchip Technology Inc.
Configure the A/D module:
• Configure the required ADC pins as analog
• Set voltage reference using ADCON0
• Select A/D input channel (ADCON0)
• Select A/D acquisition time (ADCON1)
• Select A/D conversion clock (ADCON1)
• Turn on A/D module (ADCON0)
pins using ANCON0, ANCON1
Legend: C
V
AIN
R
S
V
I
R
SS
C
R
LEAKAGE
T
PIN
IC
HOLD
SS
ANALOG INPUT MODEL
ANx
C
5 pF
PIN
= Input Capacitance
= Threshold Voltage
= Leakage Current at the pin due to
= Interconnect Resistance
= Sampling Switch
= Sample/Hold Capacitance (from DAC)
= Sampling Switch Resistance
various junctions
V
DD
V
V
T
T
= 0.6V
= 0.6V
PIC18F46J50 FAMILY
I
±100 nA
LEAKAGE
2.
3.
4.
5.
6.
7.
R
IC
Configure A/D interrupt (if desired):
• Clear ADIF bit
• Set ADIE bit
• Set GIE bit
Wait the required acquisition time (if required).
Start conversion:
• Set GO/DONE bit (ADCON0<1>)
Wait for A/D conversion to complete, by either:
• Polling for the GO/DONE bit to be cleared
OR
• Waiting for the A/D interrupt
Read A/D Result registers (ADRESH:ADRESL);
clear bit, ADIF, if required.
For next conversion, go to step 1 or step 2, as
required. The A/D conversion time per bit is
defined as T
required before next acquisition starts.
≤ 1k
SS
Sampling
Switch
V
DD
AD
R
SS
. A minimum wait of 2 T
Sampling Switch
1
V
SS
C
2
HOLD
3
DS39931C-page 345
= 25 pF
(kΩ)
4
AD
is

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