MC68HC705X32CFU Freescale Semiconductor, MC68HC705X32CFU Datasheet - Page 84

• 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
5.3.14
The layout of this register is identical to the TRTDL register (see
5.3.15
The layout of these registers is identical to the TDSx registers (see
(Note that there are actually two receive buffer register sets, but switching between them is
handled internally by the MCAN.)
5.4
Physically, the MCAN bus may be composed of two wires. The bus can take on one of two values:
dominant or recessive. During simultaneous transmission of dominant and recessive bits by two
or more CAN modules the resulting bus value will be dominant. (For example, with a wired-AND
implementation of the bus, the dominant level would correspond to a logic 0, and the recessive
level to a logic 1.)
The two wires of the MCAN bus are designated CANH and CANL. The voltage levels appearing
on these lines are designated V
wire.
to the MCAN bus with a typical low speed (<125 kbaud) hardware interface. (Note that the
suggested values shown in the diagram are subject to change in the future.)
For the voltage and resistor values shown in
RTR and data length code (RRTDL)
Receive data segment (RDS)
Figure 5-6
– Recessive level:
– Dominant level:
register (RRTDL)
Remote transmission request and data length code
Receive data segment registers (RDS) 1 – 8
Interface to the MCAN bus
shows the physical interface circuitry within the MCAN module, and its connection
Freescale Semiconductor, Inc.
For More Information On This Product,
Address
Address
$0036 –
MOTOROLA CAN MODULE (MCAN)
$003D
$0035
CANH
V
V
CANH
CANH
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and V
bit 7
bit 7
DB7
ID2
= 3.25 V
= 1.00 V
CANL
bit 6
bit 6
DB6
ID1
Figure 5-6
. A simple termination network is required for each
DB5
bit 5
bit 5
ID0
V
V
CANL
CANL
the voltages on the MCAN bus are:
RTR
DB4
bit 4
bit 4
= 1.75 V
= 4.00 V
DLC3
bit 3
bit 3
DB3
Section
Section
DLC2
bit 2
bit 2
DB2
5.3.11).
DLC1
5.3.12).
DB1
bit 1
bit 1
MC68HC05X16
DLC0 Undefined
bit 0
bit 0
DB0
Undefined
on reset
on reset
State
State
Rev. 1