MC68HC705X32CFU Freescale Semiconductor, MC68HC705X32CFU Datasheet - Page 67

• 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

In a similar manner, the CPU module is notified that a message has been received only if it was
error free. If any error occurs, the MCAN signals the error within the CAN protocol without CPU
intervention.
The MCAN within the MC68HC05X16 is controlled using a block of 30 registers. This comprises
10 control registers, 10 Transmit buffer registers and 10 receive buffer registers. These registers
are memory mapped between $20 and $3D (see
Note:
MC68HC05X16
$0020
$0029
$002A
$0033
$0034
$003D
There is an offset of $20 between the MC68HC05X16 addresses and the MCAN
internal addresses, i.e. MCAN addresses $00 to $1D, as defined in the BOSCH CAN
specification, are mapped to MC68HC05X16 addresses $20 to $3D.
MCAN register blocks
Freescale Semiconductor, Inc.
control registers
transmit buffer
receive buffer
10 bytes
10 bytes
10 bytes
MCAN
MCAN
MCAN
For More Information On This Product,
Figure 5-3 MCAN module memory map
MOTOROLA CAN MODULE (MCAN)
Go to: www.freescale.com
Figure
5-3).
Acceptance mask register
RTR-bit, data length code
RTR-bit, data length code
Acceptance code register
Output control register
Data segment byte 1
Data segment byte 2
Data segment byte 3
Data segment byte 4
Data segment byte 5
Data segment byte 6
Data segment byte 7
Data segment byte 8
Data segment byte 1
Data segment byte 2
Data segment byte 3
Data segment byte 4
Data segment byte 5
Data segment byte 6
Data segment byte 7
Data segment byte 8
Bus timing register 1
Bus timing register 2
Command register
MCAN registers
Interrupt register
Control register
Status register
Test register
Identifier
Identifier
$0020
$0021
$0022
$0023
$0024
$0025
$0026
$0027
$0028
$0029
$002A
$002B
$002C
$002D
$002E
$002F
$0030
$0031
$0032
$0033
$0034
$0035
$0036
$0037
$0038
$0039
$003A
$003B
$003C
$003D
5-5
5