MC68HC705X32CFU Freescale Semiconductor, MC68HC705X32CFU Datasheet - Page 82

• Manufacturer Part Number: MC68HC705X32CFU
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC705X32CFU

• Cpu Family: HC05
• Device Core Size: 8b
• Frequency (max): 4MHz
• Interface Type: SCI
• Program Memory Type: EPROM
• Program Memory Size: 32KB
• Total Internal Ram Size: 528Byte
• # I/os (max): 32
• Number Of Timers - General Purpose: 1
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• On-chip Adc: 8-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: PQFP
• Lead Free Status / Rohs Status: Supplier Unconfirmed

5
5.3.10
ID10 – ID3 — Identifier bits
The identifier consists of 11 bits (ID10 – ID0). ID10 is the most significant bit and is transmitted first
on the bus during the arbitration procedure. The priority of an identifier is defined to be highest for
the smallest binary number. The three least significant bits are contained in the TRTDL register.
The seven most significant bits must not all be recessive.
5.3.11
ID2 – ID0 — Identifier bits
These bits contain the least significant bits of the transmit buffer identifier.
RTR — Remote transmission request
DLC3 – DLC0 — Data length code bits.
The data length code contains the number of bytes (data byte count) of the respective message.
At transmission of a remote frame, the data length code is ignored, forcing the number of bytes to
be 0. The data byte count ranges from 0 to 8 for a data frame.
the DLC bits.
RTR and data length code (TRTDL)
Transmit buffer identifier (TBI)
1 (set)
0 (clear) –
register (TRTDL)
Transmit buffer identifier register (TBI)
Remote transmission request and data length code
–
Freescale Semiconductor, Inc.
A remote frame will be transmitted.
A data frame will be transmitted.
For More Information On This Product,
Address
Address
MOTOROLA CAN MODULE (MCAN)
$002A
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ID10
bit 7
bit 7
ID2
bit 6
bit 6
ID9
ID1
bit 5
bit 5
ID8
ID0
RTR
bit 4
bit 4
ID7
Table 5-6
DLC3
bit 3
bit 3
ID6
DLC2
bit 2
bit 2
ID5
shows the effect of setting
DLC1
bit 1
bit 1
ID4
MC68HC05X16
DLC0 Undefined
bit 0
bit 0
ID3
Undefined
on reset
on reset
State
State
Rev. 1