PIC18F26K22-I/SO Microchip Technology, PIC18F26K22-I/SO Datasheet - Page 197
PIC18F26K22-I/SO
Manufacturer Part Number
PIC18F26K22-I/SO
Description
IC PIC MCU 64KB FLASH 28SOIC
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets
1.PIC16F722-ISS.pdf
(8 pages)
2.PIC18F26J13-ISS.pdf
(496 pages)
3.PIC18F24K22-ISP.pdf
(494 pages)
Specifications of PIC18F26K22-I/SO
Core Size
8-Bit
Program Memory Size
64KB (32K x 16)
Core Processor
PIC
Speed
64MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
24
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 19x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (0.300", 7.50mm Width)
Controller Family/series
PIC18
No. Of I/o's
25
Eeprom Memory Size
1KB
Ram Memory Size
3896Byte
Cpu Speed
64MHz
No. Of Timers
7
Processor Series
PIC18F
Core
PIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F26K22-I/SO
Manufacturer:
NXP
Quantity:
928
Part Number:
PIC18F26K22-I/SO
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
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14.4.5
In Half-Bridge applications where all power switches
are modulated at the PWM frequency, the power
switches normally require more time to turn off than to
turn on. If both the upper and lower power switches are
switched at the same time (one turned on, and the
other turned off), both switches may be on for a short
period of time until one switch completely turns off.
During this brief interval, a very high current (shoot-
through current) will flow through both power switches,
shorting the bridge supply. To avoid this potentially
destructive shoot-through current from flowing during
switching, turning on either of the power switches is
normally delayed to allow the other switch to
completely turn off.
In Half-Bridge mode, a digitally programmable dead-
band delay is available to avoid shoot-through current
from destroying the bridge power switches. The delay
occurs at the signal transition from the non-active state
to the active state. See
The lower seven bits of the associated PWMxCON
register
of microcontroller instruction cycles (T
FIGURE 14-17:
2010 Microchip Technology Inc.
Standard Half-Bridge Circuit (“Push-Pull”)
(Register
PROGRAMMABLE DEAD-BAND
DELAY MODE
14-6) sets the delay period in terms
EXAMPLE OF HALF-BRIDGE APPLICATIONS
Figure 14-16
CY
for illustration.
or 4 T
PxA
PxB
OSC
).
Preliminary
FET
Driver
FET
Driver
FIGURE 14-16:
PxA
PxB
td = Dead-Band Delay
PIC18(L)F2X/4XK22
Note 1: At this time, the TMRx register is equal to the
(2)
(2)
V+
V-
2: Output signals are shown as active-high.
(1)
td
Pulse Width
PRx register.
Load
Period
td
EXAMPLE OF HALF-
BRIDGE PWM OUTPUT
+
V
-
+
V
-
(1)
DS41412D-page 197
Period
(1)
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