PIC16F684-E/P Microchip Technology, PIC16F684-E/P Datasheet - Page 83

• Manufacturer Part Number: PIC16F684-E/P
• Description: IC PIC MCU FLASH 2KX14 14DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F684-E/P

• Program Memory Type: FLASH
• Program Memory Size: 3.5KB (2K x 14)
• Package / Case: 14-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 12
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014, DM164120-4
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM163029 - BOARD PICDEM FOR MECHATRONICSACICE0207 - MPLABICE 14P 300 MIL ADAPTER
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

11.3.4
In the Half-bridge Output mode, two pins are used as
outputs to drive push-pull loads. The PWM output sig-
nal is output on the RC5/CCP1/P1A pin, while the com-
plementary PWM output signal is output on the
RC4/C2OUT/P1B pin (Figure 11-6). This mode can be
used for half-bridge applications, as shown in
Figure 11-7, 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
PDC<6:0> (PWM1CON<6:0>) sets the number of
instruction cycles before the output is driven active. If
the value is greater than the duty cycle, the corre-
sponding output remains inactive during the entire
cycle. See Section 11.3.6 “Programmable Dead
Band Delay” for more details of the dead band delay
operations.
FIGURE 11-7:
 2004 Microchip Technology Inc.
Standard Half-bridge Circuit (“Push-Pull”)
Half-bridge Output Driving a Full-bridge Circuit
HALF-BRIDGE MODE
PIC16F684
EXAMPLES OF HALF-BRIDGE APPLICATIONS
P1A
P1B
PIC16F684
P1A
P1B
FET
Driver
FET
Driver
Preliminary
FET
Driver
FET
Driver
Since the P1A and P1B outputs are multiplexed with
the PORTC<5:4> data latches, the TRISC<5:4> bits
must be cleared to configure P1A and P1B as outputs.
FIGURE 11-6:
P1A
P1B
td = Dead Band Delay
Load
Note 1: At this time, the TMR2 register is equal to the
V+
V-
(2)
(2)
V+
V-
2: Output signals are shown as active-high.
(1)
td
Duty Cycle
PR2 register.
Load
Period
td
FET
Driver
FET
Driver
HALF-BRIDGE PWM
OUTPUT
+
V
-
+
V
-
PIC16F684
(1)
Period
DS41202C-page 81
(1)