PIC24F08KA101-E/P Microchip Technology, PIC24F08KA101-E/P Datasheet - Page 125
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PIC24F08KA101-E/P
Manufacturer Part Number
PIC24F08KA101-E/P
Description
8KB Flash, 1.5KB RAM, 512B EEPROM, 16 MIPS, 18 I/O,16-bit PIC24F Family, NanoWat
Manufacturer
Microchip Technology
Series
PIC® XLP™ 24Fr
Datasheet
1.MA240017.pdf
(254 pages)
Specifications of PIC24F08KA101-E/P
Core Processor
PIC
Core Size
16-Bit
Speed
32MHz
Connectivity
I²C, IrDA, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
18
Program Memory Size
8KB (2.75K x 24)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 9x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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EXAMPLE 15-1:
TABLE 15-1:
TABLE 15-2:
© 2009 Microchip Technology Inc.
Timer Prescaler Ratio
Period Register Value
Resolution (bits)
Note 1:
Timer Prescaler Ratio
Period Register Value
Resolution (bits)
Note 1:
1.
2.
Note 1:
Find the Timer Period register value for a desired PWM frequency of 52.08 kHz, where F
(32 MHz device clock rate) and a Timer2 prescaler setting of 1:1.
T
PWM Period = 1/PWM Frequency = 1/52.08 kHz = 19.2 μs
PWM Period = (PR2 + 1) • T
19.2 μs = (PR2 + 1) • 62.5 ns • 1
PR2 = 306
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 Resolution = log
= (log
= 8.3 bits
PWM Frequency
PWM Frequency
CY
= 2 * T
10
Based on F
Based on F
Based on T
(16 MHz/52.08 kHz)/log
OSC
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 4 MIPS (F
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 16 MIPS (F
= 62.5 ns
PWM PERIOD AND DUTY CYCLE CALCULATIONS
CY
CY
CY
= F
= F
= 2 * T
10
OSC
OSC
(F
CY
30.5 Hz
FFFFh
/2, Doze mode and PLL are disabled.
FFFFh
/2, Doze mode and PLL are disabled.
OSC
7.6 Hz
CY
/F
16
16
8
8
• (Timer 2 Prescale Value)
PWM
, Doze mode and PLL are disabled.
10
2) bits
)/log
244 Hz
FFFFh
FFFFh
10
61 Hz
2) bits
16
16
1
1
Preliminary
PIC24F16KA102 FAMILY
122 Hz
488 Hz
7FFFh
7FFFh
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
31.3 kHz
125 kHz
007Fh
007Fh
= 8 MHz with PLL
CY
CY
1
7
1
7
DS39927B-page 123
= 4 MHz)
= 16 MHz)
125 kHz
500 kHz
001Fh
001Fh
(1)
1
5
1
5
(1)
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