PIC18F26K80-I/ML Microchip Technology Inc., PIC18F26K80-I/ML Datasheet - Page 457
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PIC18F26K80-I/ML
Manufacturer Part Number
PIC18F26K80-I/ML
Description
28 QFN-S 6X6MM TUBE, ECAN, 64KB FLASH, 4KB RAM, 16 MIPS, 12-BIT ADC, CTMU
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F46K80-IPT.pdf
(628 pages)
Specifications of PIC18F26K80-I/ML
A/d Inputs
8-Channel, 12-Bit
Comparators
2
Cpu Speed
16 MIPS
Eeprom Memory
256 Bytes
Input Output
24
Interface
I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
28-pin QFN
Programmable Memory
64K Bytes
Ram Size
3.6K Bytes
Speed
64 MHz
Temperature Range
–40 to 125 °C
Timers
2-8-bit, 3-16-bit
Voltage, Range
1.8-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
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The PIC18F66K80 family devices are error-active if
both error counters are below the error-passive limit of
128. They are error-passive if at least one of the error
counters equals or exceeds 128. They go to bus-off if
the transmit error counter equals or exceeds the bus-
off limit of 256. The devices remain in this state until the
bus-off recovery sequence is finished. The bus-off
recovery sequence consists of 128 occurrences of
11 consecutive recessive bits (see
that the CAN module, after going bus-off, will recover
back to error-active without any intervention by the
FIGURE 27-8:
27.15 CAN Interrupts
The module has several sources of interrupts. Each of
these interrupts can be individually enabled or dis-
abled. The PIR5 register contains interrupt flags. The
PIE5 register contains the enables for the 8 main inter-
rupts. A special set of read-only bits in the CANSTAT
register, the ICODE bits, can be used in combination
with a jump table for efficient handling of interrupts.
All interrupts have one source, with the exception of the
error interrupt and buffer interrupts in Mode 1 and 2. Any
of the error interrupt sources can set the error interrupt
flag. The source of the error interrupt can be determined
by
COMSTAT. In Mode 1 and 2, there are two interrupt
enable/disable and flag bits – one for all transmit buffers
and the other for all receive buffers.
2011 Microchip Technology Inc.
reading
the
Communication
ERROR MODES STATE DIAGRAM
RXERRCNT < 128 or
TXERRCNT < 128
Passive
Error
Figure
Status
-
27-8). Note
register,
TXERRCNT > 255
Preliminary
RXERRCNT 128 or
TXERRCNT 128
Active
Error
PIC18F66K80 FAMILY
MCU if the bus remains Idle for 128 x 11 bit times. If this
is not desired, the error Interrupt Service Routine
should address this. The current Error mode of the
CAN module can be read by the MCU via the
COMSTAT register.
Additionally, there is an Error State Warning flag bit,
EWARN, which is set if at least one of the error coun-
ters equals or exceeds the error warning limit of 96.
EWARN is reset if both error counters are less than the
error warning limit.
The interrupts can be broken up into two categories:
receive and transmit interrupts.
The receive related interrupts are:
• Receive Interrupts
• Wake-up Interrupt
• Receiver Overrun Interrupt
• Receiver Warning Interrupt
• Receiver Error-Passive Interrupt
The transmit related interrupts are:
• Transmit Interrupts
• Transmitter Warning Interrupt
• Transmitter Error-Passive Interrupt
• Bus-Off Interrupt
-
Bus-
Off
Reset
128 occurrences of
11 consecutive
“recessive” bits
DS39977C-page 457
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