PIC24FJ64GA002-I/SO Microchip Technology Inc., PIC24FJ64GA002-I/SO Datasheet - Page 183

• Manufacturer Part Number: PIC24FJ64GA002-I/SO
• Description: MCU, 16-Bit, 28-Pin, 64KB Flash, 8KB RAM, 21 I/O, Nanowatt
• Manufacturer: Microchip Technology Inc.

Specifications of PIC24FJ64GA002-I/SO

• A/d Inputs: 10 Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 16 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 21
• Interface: I2C/SPI/UART
• Memory Capacity: 64 Kbytes
• Memory Type: Flash
• Number Of Bits: 16
• Number Of Inputs: 21
• Number Of Pins: 28
• Package Type: 28-pin SOIC
• Programmable Memory: 64K Bytes
• Ram Size: 8K Bytes
• Speed: 32 MHz
• Timers: 5-16-bit
• Voltage, Range: 2-3.6 V
• Voltage, Rating: 2-3.6 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

19.0
The programmable CRC generator offers the following
features:
• User-programmable polynomial CRC equation
• Interrupt output
• Data FIFO
REGISTER 19-1:
© 2007 Microchip Technology Inc.
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-14
bit 13
bit 12-8
bit 7
bit 6
bit 5
bit 4
bit 3-0
CRCFUL
U-0
R-0
—
PROGRAMMABLE CYCLIC
REDUNDANCY CHECK (CRC)
GENERATOR
Unimplemented: Read as ‘0’
CSIDL: CRC Stop in Idle Mode bit
1 = Discontinue module operation when device enters Idle mode
0 = Continue module operation in Idle mode
VWORD4:VWORD0: Pointer Value bits
Indicates the number of valid words in the FIFO. Has a maximum value of 8 when PLEN3:PLEN0 > 7,
or 16 when PLEN3:PLEN0
CRCFUL: FIFO Full bit
1 = FIFO is full
0 = FIFO is not full
CRCMPT: FIFO Empty Bit
1 = FIFO is empty
0 = FIFO is not empty
Unimplemented: Read as ‘0’
CRCGO: Start CRC bit
1 = Start CRC serial shifter
0 = CRC serial shifter turned off
PLEN3:PLEN0: Polynomial Length bits
Denotes the length of the polynomial to be generated minus 1.
CRCMPT
U-0
R-1
—
CRCCON: CRC CONTROL REGISTER
W = Writable bit
‘1’ = Bit is set
CSIDL
R/W-0
U-0
—
≤
7.
VWORD4
CRCGO
R/W-0
PIC24FJ64GA004 FAMILY
R-0
Preliminary
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
VWORD3
PLEN3
R/W-0
19.1
There are four registers used to control programmable
CRC operation:
• CRCCON
• CRCXOR
• CRCDAT
• CRCWDAT
R-0
Registers
VWORD2
PLEN2
R/W-0
R-0
x = Bit is unknown
VWORD1
PLEN1
R/W-0
R-0
DS39881B-page 181
VWORD0
PLEN0
R/W-0
R-0
bit 8
bit 0