PIC24FJ64GA008-I/PT Microchip Technology, PIC24FJ64GA008-I/PT Datasheet - Page 117
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PIC24FJ64GA008-I/PT
Manufacturer Part Number
PIC24FJ64GA008-I/PT
Description
IC PIC MCU FLASH 32KX16 80TQFP
Manufacturer
Microchip Technology
Series
PIC® 24Fr
Datasheets
1.PIC24FJ16GA002-ISS.pdf
(52 pages)
2.PIC24FJ64GA006-IPT.pdf
(240 pages)
3.PIC24FJ64GA006-IPT.pdf
(22 pages)
Specifications of PIC24FJ64GA008-I/PT
Core Size
16-Bit
Program Memory Size
64KB (22K x 24)
Core Processor
PIC
Speed
16MHz
Connectivity
I²C, PMP, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
69
Program Memory Type
FLASH
Ram Size
8K 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
Package / Case
80-TFQFP
Controller Family/series
PIC24
No. Of I/o's
69
Ram Memory Size
8192Byte
Cpu Speed
32MHz
No. Of Timers
5
Interface
I2C, SPI, USART
Embedded Interface Type
I2C, SPI, USART
Rohs Compliant
Yes
Processor Series
PIC24FJ
Core
PIC
Data Bus Width
16 bit
Data Ram Size
8 KB
Interface Type
I2C, SPI, UART
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
69
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, DM240011, DV164033, MA240011, AC164127, DM240001
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 16 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
876-1004 - PIC24 BREAKOUT BOARDDM240011 - KIT STARTER MPLAB FOR PIC24F MCUDV164033 - KIT START EXPLORER 16 MPLAB ICD2MA160011 - DAUGHTER BOARD PICDEM LCD 16F91XDM240001 - BOARD DEMO PIC24/DSPIC33/PIC32AC164328 - MODULE SKT FOR 80TQFP
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC24FJ64GA008-I/PT
Manufacturer:
TI
Quantity:
15 000
Company:
Part Number:
PIC24FJ64GA008-I/PT
Manufacturer:
MICROCHIP
Quantity:
220
Company:
Part Number:
PIC24FJ64GA008-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
13.4
The following steps should be taken when configuring
the output compare module for PWM operation:
1.
2.
3.
4.
5.
6.
13.4.1
The PWM period is specified by writing to PRy, the
Timer Period register. The PWM period can be
calculated using Equation 13-1.
EQUATION 13-2:
© 2009 Microchip Technology Inc.
Note:
Set the PWM period by writing to the selected
Timer Period register (PRy).
Set the PWM duty cycle by writing to the OCxRS
register.
Write the OCxR register with the initial duty
cycle.
Enable interrupts, if required, for the timer and
output compare modules. The output compare
interrupt is required for PWM Fault pin
utilization.
Configure the output compare module for one of
two PWM operation modes by writing to the
Output
(OCxCON<2:0>).
Set the TMRy prescale value and enable the
time base by setting TON (TxCON<15>) = 1.
Pulse-Width Modulation Mode
The OCxR register should be initialized
before the output compare module is first
enabled. The OCxR register becomes a
Read-Only Duty Cycle register when the
module is operated in the PWM modes.
The value held in OCxR will become the
PWM duty cycle for the first PWM period.
The contents of the Duty Cycle Buffer
register, OCxRS, will not be transferred
into OCxR until a time base period match
occurs.
PWM PERIOD
Compare
Maximum PWM Resolution (bits) =
Note 1: Based on F
CALCULATION FOR MAXIMUM PWM RESOLUTION
mode
bits
OCM<2:0>
CY
= F
PIC24FJ128GA010 FAMILY
OSC
/2, Doze mode and PLL are disabled.
log
10
(
F
PWM
EQUATION 13-1:
13.4.2
The PWM duty cycle is specified by writing to the
OCxRS register. The OCxRS register can be written to
at any time, but the duty cycle value is not latched into
OCxR 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 glitch-
less PWM operation. In the PWM mode, OCxR is a
read-only register.
Some important boundary parameters of the PWM duty
cycle include:
• If the Duty Cycle register, OCxR, is loaded with
• If OCxR is greater than PRy (Timer Period register),
• If OCxR is equal to PRy, the OCx pin will be low
See Example 13-1 for PWM mode timing details.
Table 13-1 shows example PWM frequencies and
resolutions for a device operating at 10 MIPS.
PWM Period = [(PRy) + 1] • T
where:
Note 1: Based on T
0000h, the OCx pin will remain low (0% duty cycle).
the pin will remain high (100% duty cycle).
for one time base count value and high for all
other count values.
Note:
PWM Frequency = 1/[PWM Period]
• (Timer Prescale Value)
log
10
F
(2)
PLL are disabled.
PWM DUTY CYCLE
CY
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.
(1)
CY
CALCULATING THE PWM
PERIOD
= T
)
OSC
CY
bits
• (Timer Prescale Value)
(1)
* 2, Doze mode and
DS39747E-page 117