PIC18F13K22T-I/SO Microchip Technology, PIC18F13K22T-I/SO Datasheet - Page 123
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PIC18F13K22T-I/SO
Manufacturer Part Number
PIC18F13K22T-I/SO
Description
8KB Flash, 256bytes RAM, 256bytes EEPROM, 16MIPS, 1.8-5.5V Operation 20 SOIC .30
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Specifications of PIC18F13K22T-I/SO
Core Processor
PIC
Core Size
8-Bit
Speed
64MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
17
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SOIC (7.5mm Width)
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
EUSART, I2C, SPI
Maximum Clock Frequency
64 MHz
Number Of Programmable I/os
18
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 12 Channel
A/d Bit Size
10 bit
A/d Channels Available
12
Height
2.05 mm
Length
12.8 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.8 V, 2.7 V
Width
7.5 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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13.4.2.1
In the Full-Bridge mode, the P1M1 bit in the CCP1CON
register allows users to control the forward/reverse
direction. When the application firmware changes this
direction control bit, the module will change to the new
direction on the next PWM cycle.
A direction change is initiated in software by changing
the P1M1 bit of the CCP1CON register. The following
sequence occurs prior to the end of the current PWM
period:
• The modulated outputs (P1B and P1D) are placed
• The associated unmodulated outputs (P1A and
• PWM modulation resumes at the beginning of the
See Figure 13-10 for an illustration of this sequence.
FIGURE 13-10:
2010 Microchip Technology Inc.
in their inactive state.
P1C) are switched to drive in the opposite
direction.
next period.
Note 1: The direction bit P1M1 of the CCP1CON register is written any time during the PWM cycle.
P1A (Active-High)
P1B (Active-High)
P1C (Active-High)
P1D (Active-High)
Signal
2: When changing directions, the P1A and P1C signals switch before the end of the current PWM cycle. The
Direction Change in Full-Bridge
Mode
modulated P1B and P1D signals are inactive at this time. The length of this time is (1/F
value.
EXAMPLE OF PWM DIRECTION CHANGE
Pulse Width
Period
(1)
Preliminary
PIC18F1XK22/LF1XK22
The Full-Bridge mode does not provide dead-band
delay. As one output is modulated at a time, dead-band
delay is generally not required. There is a situation
where dead-band delay is required. This situation
occurs when both of the following conditions are true:
1.
2.
Figure 13-11 shows an example of the PWM direction
changing from forward to reverse, at a near 100% duty
cycle. In this example, at time t1, the output P1A and
P1D become inactive, while output P1C becomes
active. Since the turn off time of the power devices is
longer than the turn on time, a shoot-through current
will flow through power devices QC and QD (see
Figure 13-8) for the duration of ‘t’. The same
phenomenon will occur to power devices QA and QB
for PWM direction change from reverse to forward.
If changing PWM direction at high duty cycle is required
for an application, two possible solutions for eliminating
the shoot-through current are:
1.
2.
Other options to prevent shoot-through current may
exist.
The direction of the PWM output changes when
the duty cycle of the output is at or near 100%.
The turn off time of the power switch, including
the power device and driver circuit, is greater
than the turn on time.
Reduce PWM duty cycle for one PWM period
before changing directions.
Use switch drivers that can drive the switches off
faster than they can drive them on.
Pulse Width
(2)
Period
OSC
) TMR2 prescale
DS41365D-page 123
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