PIC24FJ64GA004-I/PT Microchip Technology Inc., PIC24FJ64GA004-I/PT Datasheet - Page 131
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PIC24FJ64GA004-I/PT
Manufacturer Part Number
PIC24FJ64GA004-I/PT
Description
MCU, 16-Bit, 44-Pin, 64KB Flash, 8KB RAM, 35 I/O, Nanowatt
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC24FJ64GA004-IPT.pdf
(256 pages)
Specifications of PIC24FJ64GA004-I/PT
A/d Inputs
13 Channel, 10-Bit
Comparators
2
Cpu Speed
16 MIPS
Eeprom Memory
0 Bytes
Input Output
35
Interface
I2C/SPI/UART
Memory Capacity
64 Kbytes
Memory Type
Flash
Number Of Bits
16
Number Of Inputs
35
Number Of Pins
44
Package Type
44-pin TQFP
Programmable Memory
64K Bytes
Ram Size
8K Bytes
Speed
32 MHz
Timers
5-16-bit
Voltage, Range
2-3.6 V
Voltage, Rating
2-3.6 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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EXAMPLE 13-1:
TABLE 13-1:
TABLE 13-2:
© 2007 Microchip Technology Inc.
Timer Prescaler Ratio
Period Register Value
Resolution (bits)
Note 1:
Timer Prescaler Ratio
Period Register Value
Resolution (bits)
Note 1:
1. Find the Timer Period register value for a desired PWM frequency of 52.08 kHz, where F
2.
Note 1:
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:
PWM Frequency
PWM Frequency
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
CY
Based on T
Based on T
Based on T
= T
CY
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 4 MIPS (F
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 16 MIPS (F
/2 = 62.5 ns
PWM PERIOD AND DUTY CYCLE CALCULATIONS
= (PR2 + 1) • 62.5 ns • 1
= 306
CY
CY
CY
=
= T
= T
= (log
= 8.3 bits
T
CY
CY
CY
/2; Doze mode and PLL are disabled.
/2; Doze mode and PLL are disabled.
/2; Doze mode and PLL are disabled.
10
10
30.5 Hz
FFFFh
FFFFh
7.6 Hz
(F
(16 MHz/52.08 kHz)/log
16
16
CY
8
8
CY
/F
• (Timer 2 Prescale Value)
PWM
)/log
244 Hz
FFFFh
FFFFh
61 Hz
16
16
1
1
10
PIC24FJ64GA004 FAMILY
Preliminary
2) bits
10
122 Hz
488 Hz
7FFFh
7FFFh
2) bits
15
15
1
1
3.9 kHz
977 Hz
0FFFh
0FFFh
12
12
1
1
15.6 kHz
(1)
3.9 kHz
03FFh
03FFh
10
10
1
1
OSC
= 8 MHz with PLL (32 MHz
31.3 kHz
125 kHz
007Fh
007Fh
CY
1
7
CY
1
7
DS39881B-page 129
= 4 MHz)
= 16 MHz)
125 kHz
500 kHz
001Fh
001Fh
(1)
1
5
1
5
(1)
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