PIC18F2520T-I/ML Microchip Technology, PIC18F2520T-I/ML Datasheet - Page 154

• Manufacturer Part Number: PIC18F2520T-I/ML
• Description: 28 PIN, 32 KB ENHFLASH, 1.5 KB RAM, 25 I/O PB FREE,
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2520T-I/ML

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 1.5 KB
• Interface Type: EUSART, I2C, MSSP, SPI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 25
• Number Of Timers: 1 x 8
• Operating Supply Voltage: 2 V to 5.5 V
• 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, ICE2000, ICE4000, DM163022, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP3909RD-3PH1 - REF DESIGN MCP3909 3PH ENGY MTR
• Lead Free Status / Rohs Status: Details

signals.
PIC18F2420/2520/4420/4520
16.4.4
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 complementary PWM
output signal is output on the P1B pin (Figure 16-4). This
mode can be used for half-bridge applications, as shown
in Figure 16-5, or for full-bridge applications where four
power switches are being modulated with two PWM
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,
PDC<6:0>, 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 16.4.6
“Programmable Dead-Band Delay” for more details
of the dead-band delay operations.
Since the P1A and P1B outputs are multiplexed with
the PORTC<2> and PORTD<5> data latches, the
TRISC<2> and TRISD<5> bits must be cleared to
configure P1A and P1B as outputs.
FIGURE 16-5:
DS39631E-page 152
HALF-BRIDGE MODE
Standard Half-Bridge Circuit (“Push-Pull”)
Half-Bridge Output Driving a Full-Bridge Circuit
EXAMPLES OF HALF-BRIDGE OUTPUT MODE APPLICATIONS
PIC18F4X2X
P1A
P1B
PIC18F4X2X
P1A
P1B
FET
Driver
FET
Driver
FET
Driver
FET
Driver
FIGURE 16-4:
Note 1: At this time, the TMR2 register is equal to the
P1A
P1B
td = Dead-Band Delay
(2)
(2)
Load
2: Output signals are shown as active-high.
V+
V+
V-
V-
(1)
PR2 register.
Duty Cycle
td
Load
Period
td
HALF-BRIDGE PWM
OUTPUT
© 2008 Microchip Technology Inc.
FET
Driver
FET
Driver
+
V
-
+
V
-
(1)
Period
(1)