PIC18F2480-I/SO Microchip Technology, PIC18F2480-I/SO Datasheet - Page 9

• Manufacturer Part Number: PIC18F2480-I/SO
• Description: IC PIC MCU FLASH 8KX16 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2480-I/SO

• Program Memory Type: FLASH
• Program Memory Size: 16KB (8K x 16)
• Package / Case: 28-SOIC (7.5mm Width)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 25
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: SPI/I2C/USART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 25
• Number Of Timers: 4
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DM163011, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MIL
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

10. Module: ECAN Technology
EXAMPLE 4:
 2010 Microchip Technology Inc.
Under specific conditions, the TXBnSIDH register
of the pending message for transmission may be
corrupted. This occurs when the following
conditions exist:
• A transmit message is pending.
• All of the receive buffers are full and a received
• A receive buffer is made available (RXFUL
If (RXBnOVFL == 1)
message is in the Message Assembly Buffer
(MAB).
(RXBxCON<7>) set to ‘0’) at either of the
following times:
- When a Start-of-Frame (SOF) is recognized
- On the instruction cycle prior to the SOF
The timing of this event is crucial.
on the CAN bus
{
}
Temp_RXREG = RXBx;
If (MyFlag)
{
}
If (TXREQ == 1)
{
}
TXREQ = 1;
MyFlag = 0;
DISABLING A PENDING TRANSMISSION
TXREQ = 0;
If (TXABT == 1)
MyFlag = 1;
PIC18F2480/2580/4480/4580
// Has an overflow occurred?
// Is a transmission pending?
// Clear transmit request
// Store transmission aborted status value
// Read receive buffer
// Was previous transmission aborted?
// Set transmit request
// Reset stored transmission aborted status
Work around
Ensure that a receive buffer overflow condition
does not occur and/or ensure that a transmit
request is not pending if a receive buffer
overflow condition does exist.
The pseudo code segment in Example 4 is an
example of how to disable a pending transmission.
This code is for illustration purposes only.
Affected Silicon Revisions
A1
X
B0
B2
DS80496C-page 9