PIC18F1220-H/P Microchip Technology, PIC18F1220-H/P Datasheet - Page 127

• Manufacturer Part Number: PIC18F1220-H/P
• Description: IC MCU 8BIT 4KB FLASH 18PDIP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F1220-H/P

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 18-DIP (0.300", 7.62mm)
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FIGURE 15-10:
FIGURE 15-11:
© 2007 Microchip Technology Inc.
Note 1: The direction bit in the CCP1 Control register (CCP1CON<7>) is written any time during the PWM cycle.
Note 1: t
External Switch C
External Switch D
2: When changing directions, the P1A and P1C toggle one Timer2 count before the end of the current PWM cycle.
SIGNAL
Shoot-Through
The modulated P1B and P1D signals are inactive at this time.
2: t
Potential
P1A
P1B
P1C
P1D
Current
ON
OFF
P1C
P1D
P1A
P1B
PWM DIRECTION CHANGE (ACTIVE-HIGH)
PWM DIRECTION CHANGE AT NEAR 100% DUTY CYCLE (ACTIVE-HIGH)
is the turn-on delay of power switch QC and its driver.
is the turn-off delay of power switch QD and its driver.
DC
PWM Period
Forward Period
DC
(1)
t1
PIC18F1220/1320
DC
One Timer2 Count
t
ON
Reverse Period
PWM Period
t
t = t
OFF
OFF
DC
– t
ON
(2)
DS39605F-page 125