PIC18F87J11T-I/PT Microchip Technology, PIC18F87J11T-I/PT Datasheet - Page 213

• Manufacturer Part Number: PIC18F87J11T-I/PT
• Description: IC PIC MCU FLASH 64KX16 80TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F87J11T-I/PT

• Core Size: 8-Bit
• Program Memory Size: 128KB (64K x 16)
• Oscillator Type: Internal
• Core Processor: PIC
• Speed: 48MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 68
• Program Memory Type: FLASH
• Ram Size: 3930 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 15x10b
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TFQFP
• Controller Family/series: PIC18
• No. Of I/o's: 68
• Ram Memory Size: 3930Byte
• Cpu Speed: 48MHz
• No. Of Timers: 5
• No. Of Pwm: RoHS Compliant
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3904 B
• Interface Type: EUSART, I2C, MSSP, SPI
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 68
• Number Of Timers: 5
• 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, PG164120, DM183032, DM183022, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 15 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DV164136 - DEVELOPMENT KIT FOR PIC18AC162091 - HEADER MPLAB ICD2 18F87J11 64/80MA180020 - MODULE PLUG-IN HPC EXPL 18F87J11AC164328 - MODULE SKT FOR 80TQFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: PIC18F87J11T-I/PTTR

18.4.4
In the Half-Bridge Output mode, two pins are used as
outputs to drive push-pull loads. The PWM output
signal is output on the P1A pin, while the complemen-
tary PWM output signal is output on the P1B pin
(Figure 18-4). This mode can be used for half-bridge
applications, as shown in Figure 18-5, or for full-bridge
applications, where four power switches are being
modulated with two PWM signals.
In Half-Bridge Output mode, the programmable
dead-band delay can be used to prevent shoot-through
current in half-bridge power devices. The value of bits
P1DC6:P1DC0 sets the number of instruction cycles
before the output is driven active. If the value is greater
than the duty cycle, the corresponding output remains
inactive during the entire cycle. See Section 18.4.6
“Programmable Dead-Band Delay” for more details
on dead-band delay operations.
Since the P1A and P1B outputs are multiplexed with
the PORTC<2> and PORTE<6> data latches, the
TRISC<2> and TRISE<6> bits must be cleared to
configure P1A and P1B as outputs.
FIGURE 18-5:
© 2009 Microchip Technology Inc.
Standard Half-Bridge Circuit (“Push-Pull”)
Half-Bridge Output Driving a Full-Bridge Circuit
HALF-BRIDGE MODE
EXAMPLES OF HALF-BRIDGE OUTPUT MODE APPLICATIONS
PIC18F87J11
P1A
P1B
PIC18F87J11
P1A
P1B
FET
Driver
FET
Driver
FET
Driver
FET
Driver
PIC18F87J11 FAMILY
FIGURE 18-4:
Note 1: At this time, the TMR2 register is equal to the
P1A
P1B
td = Dead Band Delay
(2)
(2)
2: Output signals are shown as active-high.
Load
(1)
V+
V-
PR2 register.
V+
V-
Duty Cycle
td
Period
Load
td
HALF-BRIDGE PWM
OUTPUT
FET
Driver
FET
Driver
(1)
+
V
-
+
V
-
DS39778D-page 213
Period
(1)