PIC24FJ64GA006-I/PT Microchip Technology, PIC24FJ64GA006-I/PT Datasheet - Page 169

• Manufacturer Part Number: PIC24FJ64GA006-I/PT
• Description: IC PIC MCU FLASH 32KX16 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 24Fr

Specifications of PIC24FJ64GA006-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 64KB (22K x 24)
• Package / Case: 64-TFQFP
• Core Processor: PIC
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: I²C, PMP, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC24FJ
• Core: PIC
• Data Bus Width: 16 bit
• Data Ram Size: 8 KB
• Interface Type: I2C/SPI/UART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 53
• Number Of Timers: 5
• 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, DM240011, DV164033, MA240013, AC164127, DM240001
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• Controller Family/series: PIC24
• No. Of I/o's: 53
• Ram Memory Size: 8KB
• Cpu Speed: 32MHz
• No. Of Timers: 5
• Embedded Interface Type: I2C, SPI, UART
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM240011 - KIT STARTER MPLAB FOR PIC24F MCUDV164033 - KIT START EXPLORER 16 MPLAB ICD2MA160011 - DAUGHTER BOARD PICDEM LCD 16F91XDM240001 - BOARD DEMO PIC24/DSPIC33/PIC32AC164327 - MODULE SKT FOR 64TQFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

19.0
The programmable CRC generator offers the following
features:
• User-programmable polynomial CRC equation
• Interrupt output
• Data FIFO
19.1
There are four registers used to control programmable
CRC operation:
• CRCCON
• CRCXOR
• CRCDAT
• CRCWDAT
FIGURE 19-1:
© 2009 Microchip Technology Inc.
Note:
D
PLEN<3:0>
OUT
XOR
PROGRAMMABLE CYCLIC
REDUNDANCY CHECK (CRC)
GENERATOR
Registers
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. Refer to Section 30. “Program-
mable
(CRC)” (DS39714) in the “PIC24F Family
Reference Manual” for more information.
IN
p_clk
Hold
BIT 0
OUT
Cyclic
0
CRC SHIFTER DETAILS
Redundancy
X1
0
1
IN
p_clk
Hold
BIT 1
OUT
1
Check
PIC24FJ128GA010 FAMILY
CRC Shift Register
X2
0
1
CRC Write Bus
19.2
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 (PLEN3:PLEN0) bits, respectively.
Consider the following equation:
EQUATION 19-1:
To program this polynomial into the CRC generator,
the CRC register bits should be set as shown in
Table 19-1.
TABLE 19-1:
Note that for the value of X<15:1>, the 12th bit and the
5th bit are set to ‘1’, as required by the equation. The 0 bit
required by the 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 0 bit
or the 16th bit.
The topology of a standard CRC generator is shown in
Figure 19-2.
IN
PLEN3:PLEN0
p_clk
Hold
BIT 2
OUT
Bit Name
X<15:1>
2
Overview
CRC Read Bus
EXAMPLE CRC SETUP
X3
x
0
1
16
+ x
CRC POLYNOMIAL
X15
12
000100000010000
0
1
+ x
5
Bit Value
+ 1
IN
BIT 15
p_clk
1111
Hold
OUT
DS39747E-page 169
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