PIC18F67K22-I/PTRSL Microchip Technology, PIC18F67K22-I/PTRSL Datasheet - Page 396
![no-image](/images/manufacturer_photos/0/4/439/microchip_technology_sml.jpg)
PIC18F67K22-I/PTRSL
Manufacturer Part Number
PIC18F67K22-I/PTRSL
Description
MCU PIC 128K FLASH XLP 64TQFP
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets
1.PIC16F722-ISS.pdf
(8 pages)
2.PIC18F65K22T-IPTRSL.pdf
(548 pages)
3.PIC18F65K22T-IPTRSL.pdf
(10 pages)
Specifications of PIC18F67K22-I/PTRSL
Core Size
8-Bit
Program Memory Size
128KB (64K x 16)
Core Processor
PIC
Speed
64MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
53
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TFQFP
Controller Family/series
PIC18
Eeprom Memory Size
1024Byte
Ram Memory Size
3862Byte
Cpu Speed
16MIPS
No. Of Timers
11
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F67K22-I/PTRSL
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F722-ISS PDF datasheet
- PIC18F65K22T-IPTRSL PDF datasheet #2
- PIC18F65K22T-IPTRSL PDF datasheet #3
- Current page: 396 of 548
- Download datasheet (5Mb)
PIC18F87K22 FAMILY
27.6
Time can be precisely measured after the ratio ( C/I ) is
measured from the current and capacitance calibration
step. To do that:
1.
2.
3.
4.
5.
FIGURE 27-3:
DS39960B-page 396
Initialize the A/D Converter and the CTMU.
Set EDG1STAT.
Set EDG2STAT.
Perform an A/D conversion.
Calculate the time between edges as T = (C/I) * V ,
where:
• I is calculated in the current calibration
• C is calculated in the capacitance calibra-
• V is measured by performing the A/D conversion
step ( Section 27.4.1 “Current Source
Calibration” )
tion step ( Section 27.4.2 “Capacitance
Calibration” )
Measuring Time with the CTMU
Module
TYPICAL CONNECTIONS AND INTERNAL CONFIGURATION FOR TIME
MEASUREMENT
CTEDG1
CTEDG2
AN
R
PR
X
Preliminary
EDG1
EDG2
It is assumed that the time measured is small enough
that the capacitance, C
to the A/D Converter. For the smallest time measure-
ment, always set the A/D Channel Select register
(AD1CHS) to an unused A/D channel, the correspond-
ing pin for which is not connected to any circuit board
trace. This minimizes added stray capacitance, keep-
ing the total circuit capacitance close to that of the A/D
Converter itself (25 pF).
To measure longer time intervals, an external capacitor
may be connected to an A/D channel and that channel
selected whenever making a time measurement.
C
AD
A/D Converter
PIC18F87K22
Current Source
CTMU
Output Pulse
OFFSET
2010 Microchip Technology Inc.
, provides a valid voltage
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