PIC24FJ256GB110-I/PT Microchip Technology, PIC24FJ256GB110-I/PT Datasheet - Page 165
PIC24FJ256GB110-I/PT
Manufacturer Part Number
PIC24FJ256GB110-I/PT
Description
IC PIC MCU FLASH 256K 100TQFP
Manufacturer
Microchip Technology
Series
PIC® 24Fr
Datasheets
1.PIC24FJ128GA106-IPT.pdf
(52 pages)
2.PIC24FJ64GB106-IPT.pdf
(16 pages)
3.PIC24FJ64GB106-IPT.pdf
(352 pages)
4.PIC24FJ192GB108-IPT.pdf
(328 pages)
Specifications of PIC24FJ256GB110-I/PT
Program Memory Type
FLASH
Program Memory Size
256KB (85.5K x 24)
Package / Case
100-TFQFP
Core Processor
PIC
Core Size
16-Bit
Speed
32MHz
Connectivity
I²C, SPI, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
83
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC24FJ
Core
PIC
Data Bus Width
16 bit
Data Ram Size
16 KB
Interface Type
I2C/SPI/UART
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
84
Number Of Timers
5
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52713-733, 52714-737, 53276-922, EWDSPIC
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, DM240001, DM240011
Minimum Operating Temperature
- 40 C
On-chip Adc
16-ch x 10-bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
876-1004 - PIC24 BREAKOUT BOARDDM240011 - KIT STARTER MPLAB FOR PIC24F MCUMA240014 - MODULE PLUG-IN PIC24DM240001 - BOARD DEMO PIC24/DSPIC33/PIC32
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
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Price
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- PIC24FJ128GA106-IPT PDF datasheet
- PIC24FJ64GB106-IPT PDF datasheet #2
- PIC24FJ64GB106-IPT PDF datasheet #3
- PIC24FJ192GB108-IPT PDF datasheet #4
- Current page: 165 of 328
- Download datasheet (6Mb)
13.3.1
The PWM period is specified by writing to PRy, the
Timer Period register. The PWM period can be
calculated using Equation 13-1.
EQUATION 13-1:
EQUATION 13-2:
EXAMPLE 13-1:
© 2008 Microchip Technology Inc.
1. Find the Timer Period register value for a desired PWM frequency of 52.08 kHz, where F
2.
PWM Period = [(PRy) + 1] • T
where:
Note 1:
Note 1:
Note:
device clock rate) and a Timer2 prescaler setting of 1:1.
Find the maximum resolution of the duty cycle that can be used with a 52.08 kHz frequency and a 32 MHz device clock rate:
T
PWM Period = 1/PWM Frequency = 1/52.08 kHz = 19.2 μs
PWM Period = (PR2 + 1) • T
19.2 μs
PR2
PWM Resolution = log
PWM Frequency = 1/[PWM Period]
CY
PWM PERIOD
A PRy value of N will produce a PWM
period of N + 1 time base count cycles. For
example, a value of 7 written into the PRy
register will yield a period consisting of
8 time base cycles.
Based on T
and PLL are disabled.
Based on T
= 2 * T
OSC
Maximum PWM Resolution (bits) =
Note 1: Based on F
= (PR2 + 1) • 62.5 ns • 1
= 306
CALCULATING THE PWM
PERIOD
CALCULATION FOR MAXIMUM PWM RESOLUTION
PWM PERIOD AND DUTY CYCLE CALCULATIONS
CY
= 62.5 ns
CY
= (log
= 8.3 bits
= T
= 2 * T
CY
OSC
• (Timer Prescale Value)
10
(1)
10
OSC
(F
* 2, Doze mode
(16 MHz/52.08 kHz)/log
CY
CY
; Doze mode and PLL are disabled.
/F
• (Timer 2 Prescale Value)
PWM
CY
)/log
= F
PIC24FJ256GB110 FAMILY
OSC
10
Preliminary
2) bits
/2, Doze mode and PLL are disabled.
log
10
10
2) bits
(
F
PWM
13.3.2
The PWM duty cycle is specified by writing to the
OCxRS and OCxR registers. The OCxRS and OCxR
registers can be written to at any time, but the duty
cycle value is not latched until a match between PRy
and TMRy occurs (i.e., the period is complete). This
provides a double buffer for the PWM duty cycle and is
essential for glitchless PWM operation.
Some important boundary parameters of the PWM duty
cycle include:
• If OCxR, OCxRS, and PRy are all loaded with
• ·If OCxRS is greater than PRy, the pin will remain
See Example 13-1 for PWM mode timing details.
Table 13-1 and Table 13-2 show example PWM
frequencies and resolutions for a device operating at
4 MIPS and 10 MIPS, respectively.
0000h, the OCx pin will remain low (0% duty
cycle).
high (100% duty cycle).
• (Timer Prescale Value)
log
10
F
(2)
CY
PWM DUTY CYCLE
(1)
(1)
OSC
)
= 8 MHz with PLL (32 MHz
bits
DS39897B-page 163
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