PIC24FJ128DA110-I/PT Microchip Technology Inc., PIC24FJ128DA110-I/PT Datasheet - Page 142
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PIC24FJ128DA110-I/PT
Manufacturer Part Number
PIC24FJ128DA110-I/PT
Description
100 TQFP 12x12x1mm TRAY, 16-bit, 128KB Flash, 24K RAM, USB, Graphics
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC24FJ128DA110-IPT.pdf
(408 pages)
Specifications of PIC24FJ128DA110-I/PT
A/d Inputs
24 Channel, 10-bit
Comparators
3
Cpu Speed
16 MIPS
Eeprom Memory
0 Bytes
Input Output
84
Interface
I2C/SPI/UART/USART/USB
Memory Type
Flash
Number Of Bits
16
Package Type
100-pin TQFP
Programmable Memory
128K Bytes
Ram Size
24K Bytes
Speed
32 MHz
Temperature Range
–40 to 85 °C
Timers
5-16-bit
Voltage, Range
2.2-3.6 V
Lead Free Status / Rohs Status
RoHS Compliant part
Available stocks
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Quantity
Price
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Part Number:
PIC24FJ128DA110-I/PT
Manufacturer:
Microchip Technology
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PIC24FJ256DA210 FAMILY
8.1
The system clock source can be provided by one of
four sources:
• Primary Oscillator (POSC) on the OSCI and
• Secondary Oscillator (SOSC) on the SOSCI and
• Fast Internal RC (FRC) Oscillator
• Low-Power Internal RC (LPRC) Oscillator
The primary oscillator and FRC sources have the
option of using the internal 24x PLL block, which
generates the USB module clock, the Graphics module
clock and a separate system clock through the 96 MHZ
PLL. Refer to Section 8.5 “96 MHz PLL Block” for
additional information.
The internal FRC provides an 8 MHz clock source. It
can optionally be reduced by the programmable clock
divider to provide a range of system clock frequencies.
The selected clock source generates the processor
and peripheral clock sources. The processor clock
source is divided by two to produce the internal instruc-
tion cycle clock, F
cycle clock is also denoted by F
instruction cycle clock, F
OSCO I/O pin for some operating modes of the primary
oscillator.
TABLE 8-1:
DS39969B-page 142
Fast RC Oscillator with Postscaler
(FRCDIV)
FRC Oscillator/16 (500 KHz)
Low-Power RC Oscillator (LPRC)
Secondary (Timer1) Oscillator
(SOSC)
Primary Oscillator (XT) with PLL
Module (XTPLL)
Primary Oscillator (EC) with PLL
Module (ECPLL)
Primary Oscillator (HS)
Primary Oscillator (XT)
Primary Oscillator (EC)
Fast RC Oscillator with PLL Module
(FRCPLL)
Fast RC Oscillator (FRC)
Note 1:
OSCO pins
SOSCO pins
2:
CPU Clocking Scheme
Oscillator Mode
OSCO pin function is determined by the OSCIOFCN Configuration bit.
This is the default oscillator mode for an unprogrammed (erased) device.
CONFIGURATION BIT VALUES FOR CLOCK SELECTION
CY
. In this document, the instruction
OSC
/2, can be provided on the
OSC
/2. The internal
Oscillator Source
Secondary
Primary
Primary
Primary
Primary
Primary
Internal
Internal
Internal
Internal
Internal
registers in the program memory (refer to Section 27.1
8.2
The oscillator source (and operating mode) that is used
at a device Power-on Reset (POR) event is selected
using Configuration bit settings. The oscillator Configu-
ration bit settings are located in the Configuration
“Configuration Bits” for further details). The Primary
Oscillator Configuration bits, POSCMD<1:0> (Configu-
ration Word 2<1:0>) and the Initial Oscillator Select
Configuration
Word 2<10:8>), select the oscillator source that is used
at a POR. The FRC primary oscillator with postscaler
(FRCDIV) is the default (unprogrammed) selection. The
secondary oscillator, or one of the internal oscillators,
may be chosen by programming these bit locations.
The Configuration bits allow users to choose between
the various clock modes, shown in Table 8-1.
8.2.1
The
Word 2<7:6>) are used to jointly configure device clock
switching and the Fail-Safe Clock Monitor (FSCM).
Clock switching is enabled only when FCKSM1 is
programmed (‘0’). The FSCM is enabled only when
FCKSM<1:0> are both programmed (‘00’).
POSCMD<1:0>
FCKSM
11
11
11
11
01
00
10
01
00
11
11
Initial Configuration on POR
CLOCK SWITCHING MODE
CONFIGURATION BITS
bits,
Configuration
FNOSC<2:0>
2010 Microchip Technology Inc.
FNOSC<2:0>
111
110
101
100
011
011
010
010
010
001
000
bits
(Configuration
(Configuration
Notes
1, 2
—
—
—
1
1
1
1
1
1
1
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