PIC18F6680-I/L Microchip Technology, PIC18F6680-I/L Datasheet - Page 292

• Manufacturer Part Number: PIC18F6680-I/L
• Description: Microcontrollers (MCU) 64KB 3328 RAM 52 I/O
• Manufacturer: Microchip Technology

Specifications of PIC18F6680-I/L

• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3.25 KB
• Interface Type: I2C/SPI/AUSART/CAN
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 53
• Number Of Timers: 5
• Operating Supply Voltage: 4.2 V to 5.5 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, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12-ch x 10-bit
• Program Memory Type: Flash
• Program Memory Size: 64 KB
• Package / Case: PLCC-68
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F6585/8585/6680/8680
EXAMPLE 23-4:
DS30491C-page 290
; Need to transmit Standard Identifier message 123h using TXB0 buffer.
; To successfully transmit, CAN module must be either in Normal or Loopback mode.
; TXB0 buffer is not in access bank.
MOVF
ANDLW
IORLW
MOVWF
; Now TXB0 is mapped in place of RXB0.
; yield TXB0 register values.
; Load transmit data into TXB0 buffer.
MOVLW
MOVWF
; Load rest of the data bytes - up to 8 bytes into “TXB0” buffer using RXB0 registers.
...
; Load message identifier
MOVLW
MOVWF
MOVLW
MOVWF
; No need to load RXB0EIDL:RXB0EIDH, as we are transmitting Standard Identifier Message only.
; Now that all data bytes are loaded, mark it for transmission.
MOVLW
MOVWF
; If required, wait for message to get transmitted
BTFSC
BRA
; Message is transmitted.
; If required, reset the WIN bits to default state.
CANCON, W
B’11110000’
B’00001000’
CANCON
MY_DATA_BYTE1
RXB0D0
60H
RXB0SIDL
24H
RXB0SIDH
B’00001000’
RXB0CON
RXB0CON, TXREQ
$-2
TRANSMITTING A CAN MESSAGE USING WIN BITS
; WIN bits are in lower 4 bits only.
; register to preserve all other bits.
; mode is already known, there is no need to preserve
; other bits.
; Clear WIN bits.
; Select Transmit Buffer 0
; Apply the changes.
; Load first data byte into buffer
; Access TXB0D0 via RXB0D0 address.
; Load SID2:SID0, EXIDE = 0
; Load SID10:SID3
; Normal priority; Request transmission
; Is it transmitted?
; No.
Use WIN bits to map it to RXB0 area.
All future access to RXB0 registers will actually
Continue to wait...
 2004 Microchip Technology Inc.
Read CANCON
If operation