PIC24HJ64GP502-E/MM Microchip Technology, PIC24HJ64GP502-E/MM Datasheet - Page 121

• Manufacturer Part Number: PIC24HJ64GP502-E/MM
• Description: IC PIC MCU FLASH 64K 28-QFN
• Manufacturer: Microchip Technology
• Series: PIC® 24Hr

Specifications of PIC24HJ64GP502-E/MM

• Program Memory Type: FLASH
• Program Memory Size: 64KB (22K x 24)
• Package / Case: 28-QFN
• Core Processor: PIC
• Core Size: 16-Bit
• Speed: 40 MIPs
• Connectivity: CAN, I²C, IrDA, LIN, PMP, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 21
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 10x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Processor Series: PIC24HJ
• Core: PIC
• Data Bus Width: 16 bit
• Data Ram Size: 8 KB
• Interface Type: I2C/SPI/UART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 5
• Maximum Operating Temperature: + 125 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, DM300027
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10-ch x 10-bit or 10-ch x 12-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164336 - MODULE SOCKET FOR PM3 28/44QFN
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

9.1.3
The primary oscillator and internal FRC oscillator can
optionally use an on-chip PLL to obtain higher speeds
of operation. The PLL provides significant flexibility in
selecting the device operating speed. A block diagram
of the PLL is shown in Figure 9-2.
The output of the primary oscillator or FRC, denoted as
‘F
... or 33 before being provided to the PLL’s Voltage
Controlled Oscillator (VCO). The input to the VCO must
be selected in the range of 0.8 MHz to 8 MHz. The
prescale
PLLPRE<4:0> bits (CLKDIV<4:0>).
The PLL Feedback Divisor, selected using the
PLLDIV<8:0> bits (PLLFBD<8:0>), provides a factor ‘M’,
by which the input to the VCO is multiplied. This factor
must be selected such that the resulting VCO output
frequency is in the range of 100 MHz to 200 MHz.
The VCO output is further divided by a postscale factor
‘N2’. This factor is selected using the PLLPOST<1:0>
bits (CLKDIV<7:6>). ‘N2’ can be either 2, 4 or 8, and
must be selected such that the PLL output frequency
(F
generates device operating speeds of 6.25-40 MIPS.
FIGURE 9-2:
© 2009 Microchip Technology Inc.
Source (Crystal, External Clock
IN
OSC
or Internal RC)
’, is divided down by a prescale factor (N1) of 2, 3,
Note 1: This frequency range must be satisfied at all times.
) is in the range of 12.5 MHz to 80 MHz, which
factor
PLL CONFIGURATION
‘N1’
PIC24HJ32GP302/304, PIC24HJ64GPX02/X04 AND PIC24HJ128GPX02/X04 PLL
BLOCK DIAGRAM
is
selected
Divide by
PLLPRE
2-33
N1
using
0.8-8.0 MHz
Here
Preliminary
the
(1)
X
For a primary oscillator or FRC oscillator, output ‘F
the PLL output ‘F
EQUATION 9-2:
For example, suppose a 10 MHz crystal is being used
with the selected oscillator mode of XT with PLL.
• If PLLPRE<4:0> = 0, then N1 = 2. This yields a
• If PLLDIV<8:0> = 0x1E, then M = 32. This yields a
• If PLLPOST<1:0> = 0, then N2 = 2. This provides
EQUATION 9-3:
VCO input of 10/2 = 5 MHz, which is within the
acceptable range of 0.8-8 MHz.
VCO output of 5 x 32 = 160 MHz, which is within
the 100-200 MHz ranged needed.
a Fosc of 160/2 = 80 MHz. The resultant device
operating speed is 80/2 = 40 MIPS.
Divide by
PLLDIV
F
2-513
CY
VCO
M
=
F
100-200 MHz
OSC
2
F
Here
OSC
F
VCO
=
OSC
= F
(1)
1
2
’ is given by:
(
IN
PLLPOST
F
XT WITH PLL MODE
EXAMPLE
10000000 • 32
Divide by
•
OSC
2, 4, 8
(
N2
N1 • N2
2 • 2
CALCULATION
M
12.5-80 MHz
)
DS70293D-page 121
)
Here
=
40 MIPS
(1)
F
OSC
IN
’,