PIC18F4431-E/PT Microchip Technology, PIC18F4431-E/PT Datasheet - Page 178
PIC18F4431-E/PT
Manufacturer Part Number
PIC18F4431-E/PT
Description
IC MCU FLASH 8KX16 44TQFP
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)
8.PIC18F4431-EPT.pdf
(396 pages)
Specifications of PIC18F4431-E/PT
Core Size
8-Bit
Program Memory Size
16KB (8K x 16)
Oscillator Type
Internal
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
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Controller Family/series
PIC18
No. Of I/o's
36
Eeprom Memory Size
256Byte
Ram Memory Size
768Byte
Cpu Speed
40MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F4431-E/PT
Manufacturer:
JOHANSON
Quantity:
24 000
Company:
Part Number:
PIC18F4431-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- 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
- PIC18F4431-EPT PDF datasheet #8
- Current page: 178 of 396
- Download datasheet (8Mb)
PIC18F2331/2431/4331/4431
16.2.6.1
The event pulses are reduced by a fixed ratio by the
velocity pulse divider. The divider is useful for
high-speed measurements where the velocity events
happen frequently. By producing a single output pulse
for a given number of input event pulses, the counter
can track larger pulse counts (i.e., distance travelled)
for a given time interval. Time is measured by utilizing
the TMR5 time base.
FIGURE 16-12:
DS39616B-page 176
CAP3/QEB
CAP2/QEA
CAP1/INDX
Velocity Event Timing
VELOCITY MEASUREMENT BLOCK DIAGRAM
QEB
QEA
INDX
QEI
Control
Logic
Velocity Event
Direction
Clock
Preliminary
Postscaler
Reset
Logic
Position
Counter
TMR5 Reset
Each velocity pulse serves as a capture pulse. With the
TMR5 in Synchronous Timer mode, the value of TMR5
is captured on every output pulse of the postscaler. The
counter is subsequently reset to ‘0’. TMR5 is reset
upon a capture event.
Figure 16-13 shows the velocity measurement timing
diagram.
Velocity Capture
(VELR Register)
TMR5
2003 Microchip Technology Inc.
IC1
16
Clock
Velocity Mode
T
CY
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