PIC18F24J10-I/ML Microchip Technology, PIC18F24J10-I/ML Datasheet - Page 139

• Manufacturer Part Number: PIC18F24J10-I/ML
• Description: IC PIC MCU FLASH 8KX16 28QFN
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F24J10-I/ML

• Core Size: 8-Bit
• Program Memory Size: 16KB (8K x 16)
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 21
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 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
• Controller Family/series: PIC18
• No. Of I/o's: 21
• Ram Memory Size: 1024Byte
• Cpu Speed: 40MHz
• No. Of Timers: 3
• Interface: I2C, SPI, USART
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: SPIC, I2C, EUSART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 3
• 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, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 10 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164336 - MODULE SOCKET FOR PM3 28/44QFNAC162074 - HEADER INTRFC MPLAB ICD2 44TQFPAC162067 - HEADER INTRFC MPLAB ICD2 40/28P
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

15.4
The Enhanced PWM mode provides additional PWM
output options for a broader range of control applica-
tions. The module is a backward compatible version of
the standard CCP module and offers up to four outputs,
designated P1A through P1D. Users are also able to
select the polarity of the signal (either active-high or
active-low). The module’s output mode and polarity are
configured by setting the P1M<1:0> and CCP1M<3:0>
bits of the CCP1CON register.
Figure 15-1 shows a simplified block diagram of PWM
operation. All control registers are double-buffered and
are loaded at the beginning of a new PWM cycle (the
period boundary when Timer2 resets) in order to
prevent glitches on any of the outputs. The exception is
the PWM Dead-Band Delay register, ECCP1DEL,
which is loaded at either the duty cycle boundary or the
period boundary (whichever comes first). Because of
the buffering, the module waits until the assigned timer
resets instead of starting immediately. This means that
Enhanced PWM waveforms do not exactly match the
standard PWM waveforms, but are instead offset by
one full instruction cycle (4 T
As before, the user must manually configure the
appropriate TRIS bits for output.
FIGURE 15-1:
© 2009 Microchip Technology Inc.
Enhanced PWM Mode
Note: The 8-bit TMR2 register is concatenated with the 2-bit internal Q clock, or 2 bits of the prescaler, to create the 10-bit
CCPR1H (Slave)
Duty Cycle Registers
Comparator
CCPR1L
TMR2
time base.
PR2
Comparator
SIMPLIFIED BLOCK DIAGRAM OF THE ENHANCED PWM MODULE
(Note 1)
OSC
Clear Timer,
set CCP1 pin and
latch D.C.
CCP1CON<5:4>
).
R
S
P1M1<1:0>
Q
PIC18F45J10 FAMILY
ECCP1DEL
Controller
15.4.1
The PWM period is specified by writing to the PR2
register. The PWM period can be calculated using the
following equation.
EQUATION 15-1:
PWM frequency is defined as 1/[PWM period]. When
TMR2 is equal to PR2, the following three events occur
on the next increment cycle:
• TMR2 is cleared
• The CCP1 pin is set (if PWM duty cycle = 0%, the
• The PWM duty cycle is copied from CCPR1L into
Output
2
CCP1/P1A
CCP1 pin will not be set)
CCPR1H
Note:
P1B
P1C
P1D
PWM Period =
CCP1M<3:0>
4
PWM PERIOD
The Timer2 postscaler (see Section 13.0
“Timer2 Module”) is not used in the
determination of the PWM frequency. The
postscaler could be used to have a servo
update rate at a different frequency than
the PWM output.
TRISx<x>
TRISx<x>
TRISx<x>
TRISx<x>
[(PR2) + 1] • 4 • T
(TMR2 Prescale Value)
DS39682E-page 137
CCP1/P1A
P1B
P1C
P1D
OSC
•