PIC18F64J11T-I/PT Microchip Technology, PIC18F64J11T-I/PT Datasheet - Page 263

• Manufacturer Part Number: PIC18F64J11T-I/PT
• Description: 16KB, Flash, 1024bytes-RAM, 51I/O, 8-bit Family,nanoWatt 64 TQFP 10x10x1mm T/R
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F64J11T-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 51
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TFQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MA180018 - MODULE PLUG-IN 18F85J11AC162079 - HEADER MPLAB ICD2 18F85J90 64/80AC164327 - MODULE SKT FOR 64TQFP
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PIC18F64J11T-I/PTTR

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 inputs.
To determine acquisition time, see Section 20.1 “A/D
Acquisition Requirements”. After this acquisition
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.
2.
3.
FIGURE 20-2:
 2010 Microchip Technology Inc.
Configure the A/D module:
• Configure analog pins, voltage reference and
• Select the A/D input channel (ADCON0)
• Select the A/D acquisition time (ADCON2)
• Select the A/D conversion clock (ADCON2)
• Turn on the A/D module (ADCON0)
Configure the A/D interrupt (if desired):
• Clear the ADIF bit
• Set the ADIE bit
• Set the GIE bit
Wait the required acquisition time (if required).
digital I/O (ADCON1)
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
PIC18F85J11 FAMILY
I
±100 nA
LEAKAGE
4.
5.
6.
7.
R
IC
Start the conversion:
• Set the GO/DONE bit (ADCON0<1>)
Wait for the A/D conversion to complete, by
either:
• Polling for the GO/DONE bit to be cleared
OR
• Waiting for the A/D interrupt
Read
(ADRESH:ADRESL); clear the ADIF bit, if
required.
For the next conversion, go to step 1 or step 2,
as required. The A/D conversion time per bit is
defined as T
required before the next acquisition starts.
 1k
SS
Sampling
the
V
Switch
DD
AD
R
SS
. A minimum wait of 2 T
A/D
Sampling Switch (k)
1
V
SS
C
2
HOLD
Result
3
DS39774D-page 263
= 25 pF
4
registers
AD
is