PIC18F1220-I/SO Microchip Technology Inc., PIC18F1220-I/SO Datasheet - Page 127
PIC18F1220-I/SO
Manufacturer Part Number
PIC18F1220-I/SO
Description
Microcontroller; 4 KB Flash; 256 RAM; 256 EEPROM; 16 I/O; 18-Pin-SOIC
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F1220-ISO.pdf
(310 pages)
Specifications of PIC18F1220-I/SO
A/d Inputs
7-Channel, 10-Bit
Cpu Speed
10 MIPS
Eeprom Memory
256 Bytes
Input Output
16
Interface
USART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin SOIC
Programmable Memory
4K Bytes
Ram Size
256 Bytes
Speed
20 MHz
Timers
1-8-bit, 3-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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FIGURE 15-10:
FIGURE 15-11:
2004 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)
DS39605C-page 125
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