DSPIC33FJ64MC204-I/ML Microchip Technology, DSPIC33FJ64MC204-I/ML Datasheet - Page 309

• Manufacturer Part Number: DSPIC33FJ64MC204-I/ML
• Description: IC DSPIC MCU/DSP 64K 44-QFN
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33Fr

Specifications of DSPIC33FJ64MC204-I/ML

• Program Memory Type: FLASH
• Program Memory Size: 64KB (64K x 8)
• Package / Case: 44-QFN
• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 40 MIPs
• Connectivity: I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, Motor Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 35
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 9x10b/12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Product: DSCs
• Data Bus Width: 16 bit
• Processor Series: DSPIC33F
• Core: dsPIC
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 35
• Data Ram Size: 8 KB
• Maximum Operating Temperature: + 85 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, DM240001, DV164033
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164336 - MODULE SOCKET FOR PM3 28/44QFNDM240001 - BOARD DEMO PIC24/DSPIC33/PIC32
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

26.0
The programmable CRC generator offers the following
features:
• User-programmable polynomial CRC equation
• Interrupt output
• Data FIFO
FIGURE 26-1:
© 2009 Microchip Technology Inc.
D
Note 1: This data sheet summarizes the features
PLEN<3:0>
OUT
XOR
2: Some registers and associated bits
PROGRAMMABLE CYCLIC
REDUNDANCY CHECK (CRC)
GENERATOR
of
dsPIC33FJ64MCX02/X04
dsPIC33FJ128MCX02/X04
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet,
Programmable
Check
“dsPIC33F/PIC24H Family Reference
Manual”, which is available from the
Microchip website (www.microchip.com).
described in this section may not be avail-
able on all devices. Refer to Section 4.0
“Memory Organization” in this data
sheet for device-specific register and bit
information.
IN
p_clk
Hold
BIT 0
OUT
the
0
(CRC)”
refer
CRC SHIFTER DETAILS
dsPIC33FJ32MC302/304,
Cyclic
to
X1
0
1
(DS70298)
“Section
IN
p_clk
BIT 1
Redundancy
Hold
OUT
family
of
1
and
36.
the
Preliminary
CRC Shift Register
of
X2
0
1
CRC Write Bus
26.1
The module implements a software configurable CRC
generator. The terms of the polynomial and its length
can be programmed using the CRCXOR (X<15:1>) bits
and the CRCCON (PLEN<3:0>) bits, respectively.
EQUATION 26-1:
To program this polynomial into the CRC generator,
the CRC register bits should be set as shown in
Table 26-1.
TABLE 26-1:
For the value of X<15:1>, the 12th bit and the 5th bit are
set to ‘1’, as required by the CRC equation. The 0th bit
required by the CRC equation is always XORed. For a
16-bit polynomial, the 16th bit is also always assumed
to be XORed; therefore, the X<15:1> bits do not have
the 0th bit or the 16th bit.
The topology of a standard CRC generator is shown in
Figure 26-2.
IN
p_clk
Hold
BIT 2
PLEN<3:0>
OUT
Bit Name
X<15:1>
2
Overview
CRC Read Bus
x
16
EXAMPLE CRC SETUP
X3
0
1
+
CRC EQUATION
x
12
X15
000100000010000
0
1
+
x
5
Bit Value
+
IN
BIT 15
1
1111
p_clk
Hold
DS70291D-page 309
OUT
15