MA180023 Microchip Technology, MA180023 Datasheet - Page 247
![MODULE PLUG-IN PIC18F46J11 PIM](/photos/8/96/89602/ma180023_sml.jpg)
MA180023
Manufacturer Part Number
MA180023
Description
MODULE PLUG-IN PIC18F46J11 PIM
Manufacturer
Microchip Technology
Series
PIC®r
Datasheet
1.MA180023.pdf
(528 pages)
Specifications of MA180023
Accessory Type
Plug-In Module (PIM) - PIC18F46J11
Tool / Board Applications
General Purpose MCU, MPU, DSP, DSC
Mcu Supported Families
PIC18
Supported Devices
Stand-alone Or W/ HPC(DM183022) Or PIC18(DM183032)
Silicon Manufacturer
Microchip
Core Architecture
PIC
Core Sub-architecture
PIC18
Silicon Core Number
PIC18F
Silicon Family Name
PIC18FxxJxx
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
HPC Explorer Board (DM183022) or PIC18 Explorer Board (DM183032)
For Use With
DM183032 - BOARD EXPLORER PICDEM PIC18DM183022 - BOARD DEMO PIC18FXX22 64/80TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MA180023
Manufacturer:
Microchip Technology
Quantity:
135
- Current page: 247 of 528
- Download datasheet (8Mb)
The CCPRxH register and a 2-bit internal latch are
used to double-buffer the PWM duty cycle. This
double-buffering is essential for glitchless PWM
operation.
When the CCPRxH and 2-bit latch match TMR2
(TMR4), concatenated with an internal 2-bit Q clock or
2 bits of the TMR2 (TMR4) prescaler, the CCPx pin is
cleared.
The maximum PWM resolution (bits) for a given PWM
frequency is given by Equation 17-3:
EQUATION 17-3:
TABLE 17-2:
© 2009 Microchip Technology Inc.
Timer Prescaler (1, 4, 16)
PR2 Value
Maximum Resolution (bits)
Note:
PWM Resolution (max) =
PWM Frequency
If the PWM duty cycle value is longer than
the PWM period, the CCPx pin will not be
cleared.
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 40 MHz
log
(
log(2)
2.44 kHz
F
F
FFh
PWM
OSC
16
10
)
bits
9.77 kHz
FFh
10
4
PIC18F46J11 FAMILY
39.06 kHz
17.4.3
The following steps should be taken when configuring
the CCP module for PWM operation:
1.
2.
3.
4.
5.
FFh
10
1
Set the PWM period by writing to the PR2 (PR4)
register.
Set the PWM duty cycle by writing to the
CCPRxL register and CCPxCON<5:4> bits.
Make the CCPx pin an output by clearing the
appropriate TRIS bit.
Set the TMR2 (TMR4) prescale value, then
enable Timer2 (Timer4) by writing to T2CON
(T4CON).
Configure the CCPx module for PWM operation.
SETUP FOR PWM OPERATION
156.25 kHz
3Fh
1
8
312.50 kHz
1Fh
1
7
DS39932C-page 247
416.67 kHz
6.58
17h
1
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