PIC18F2321-I/ML Microchip Technology, PIC18F2321-I/ML Datasheet - Page 151
![IC PIC MCU FLASH 4KX16 28QFN](/photos/6/81/68120/150-28-qfn_sml.jpg)
PIC18F2321-I/ML
Manufacturer Part Number
PIC18F2321-I/ML
Description
IC PIC MCU FLASH 4KX16 28QFN
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F2221-ISO.pdf
(402 pages)
3.PIC18F2221-ISO.pdf
(8 pages)
4.PIC18F2221-ISO.pdf
(30 pages)
5.PIC18F2221-ISO.pdf
(46 pages)
6.PIC18F2321-IML.pdf
(396 pages)
Specifications of PIC18F2321-I/ML
Program Memory Type
FLASH
Program Memory Size
8KB (4K x 16)
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
25
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
EUSART/I2C/MSSP/SPI
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
25
Number Of Timers
4
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, ICE4000, ICE2000, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
10-ch x 10-bit
Package
28QFN EP
Device Core
PIC
Family Name
PIC18
Maximum Speed
40 MHz
Operating Supply Voltage
5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT28QFN4 - SOCKET TRANS ICE 28QFN W/CABLEAC164322 - MODULE SOCKET MPLAB PM3 28/44QFN
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- PIC16F616T-ISL PDF datasheet
- PIC18F2221-ISO PDF datasheet #2
- PIC18F2221-ISO PDF datasheet #3
- PIC18F2221-ISO PDF datasheet #4
- PIC18F2221-ISO PDF datasheet #5
- PIC18F2321-IML PDF datasheet #6
- Current page: 151 of 402
- Download datasheet (7Mb)
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,
concatenated with an internal 2-bit Q clock or 2 bits of
the TMR2 prescaler, the CCPx pin is cleared.
The maximum PWM resolution (bits) for a given PWM
frequency is given by the equation:
TABLE 16-4:
16.4.3
The PWM auto-shutdown features of the Enhanced CCP
module are also available to CCP1 in 28-pin devices. The
operation of this feature is discussed in detail in
Section 17.4.7 “Enhanced PWM Auto-Shutdown”.
Auto-shutdown features are not available for CCP2.
© 2009 Microchip Technology Inc.
Timer Prescaler (1, 4, 16)
PR2 Value
Maximum Resolution (bits)
PWM Frequency
PWM AUTO-SHUTDOWN
(CCP1 ONLY)
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 40 MHz
PIC18F2221/2321/4221/4321 FAMILY
2.44 kHz
FFh
16
10
9.77 kHz
FFh
10
4
39.06 kHz
EQUATION 16-3:
16.4.4
The following steps should be taken when configuring
the CCP module for PWM operation:
1.
2.
3.
4.
5.
Note:
FFh
10
1
Set the PWM period by writing to the PR2
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 prescale value, then enable
Timer2 by writing to T2CON.
Configure the CCPx module for PWM operation.
PWM Resolution (max)
If the PWM duty cycle value is longer than
the PWM period, the CCPx pin will not be
cleared.
SETUP FOR PWM OPERATION
156.25 kHz
3Fh
1
8
312.50 kHz
=
1Fh
1
7
log
-----------------------------bits
log
DS39689F-page 151
⎛
⎝
---------------
F
F
PWM
2 ( )
OSC
416.67 kHz
⎞
⎠
6.58
17h
1
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