DSPIC33FJ256GP710-I/PF Microchip Technology Inc., DSPIC33FJ256GP710-I/PF Datasheet - Page 153
DSPIC33FJ256GP710-I/PF
Manufacturer Part Number
DSPIC33FJ256GP710-I/PF
Description
16 BIT MCU/DSP 100LD 40MIPS 256KB FLASH
Manufacturer
Microchip Technology Inc.
Type
DSPr
Datasheet
1.DSPIC33FJ256GP710-IPF.pdf
(371 pages)
Specifications of DSPIC33FJ256GP710-I/PF
A/d Inputs
32-Channels, 12-Bit
Comparators
8
Cpu Speed
40 MIPS
Eeprom Memory
0 Bytes
Input Output
85
Interface
CAN/I2C/SPI/UART
Ios
85
Memory Type
Flash
Number Of Bits
16
Package Type
100-pin TQFP
Programmable Memory
256K Bytes
Ram Size
30K Bytes
Timers
9-16-bit, 4-32-bit
Voltage, Range
3-3.6
Lead Free Status / Rohs Status
RoHS Compliant part
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For example, suppose a 10 MHz crystal is being used,
with “XT with PLL” being the selected oscillator mode.
If PLLPRE<4:0> = 0, then N1 = 2. This yields a VCO
input of 10/2 = 5 MHz, which is within the acceptable
range of 0.8-8 MHz. If PLLDIV<8:0> = 0x1E, then
M = 32. This yields a VCO output of 5 x 32 = 160 MHz,
which is within the 100-200 MHz ranged needed.
If PLLPOST<1:0> = 0, then N2 = 2. This provides a
Fosc of 160/2 = 80 MHz. The resultant device operating
speed is 80/2 = 40 MIPS.
FIGURE 8-2:
TABLE 8-1:
© 2006 Microchip Technology Inc.
Fast RC Oscillator with Divide-by-N
(FRCDIVN)
Fast RC Oscillator with Divide-by-16
(FRCDIV16)
Low-Power RC Oscillator (LPRC)
Secondary (Timer1) Oscillator (SOSC)
Primary Oscillator (HS) with PLL
(HSPLL)
Primary Oscillator (XT) with PLL
(XTPLL)
Primary Oscillator (EC) with PLL
(ECPLL)
Primary Oscillator (HS)
Primary Oscillator (XT)
Primary Oscillator (EC)
Fast RC Oscillator with PLL (FRCPLL)
Fast RC Oscillator (FRC)
Note 1:
Source (Crystal, External Clock
or Internal RC)
2:
Oscillator Mode
OSC2 pin function is determined by the OSCIOFNC Configuration bit.
This is the default oscillator mode for an unprogrammed (erased) device.
CONFIGURATION BIT VALUES FOR CLOCK SELECTION
1.6-16.0 MHz
dsPIC33F PLL BLOCK DIAGRAM
Here
PLLPRE
Oscillator Source
0.8-8.0 MHz
Divide by
Secondary
Primary
Primary
Primary
Primary
Primary
Primary
2-33
Internal
Internal
Internal
Internal
Internal
Here
Preliminary
X
EQUATION 8-3:
POSCMD<1:0>
Divide by
F
PLLDIV
CY
2-513
VCO
=
11
11
11
11
10
01
00
10
01
00
11
11
F
100-200 MHz
2
OSC
Here
=
2
1
(
10000000*32
PLLPOST
XT WITH PLL MODE
EXAMPLE
Divide by
2, 4, 8
2*2
FNOSC<2:0>
dsPIC33F
111
110
101
100
011
011
011
010
010
010
001
000
)
12.5-80 MHz
= 40 MIPS
DS70165D-page 151
Here
Note
1, 2
F
1
1
1
1
1
1
1
OSC
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