MC68HC705X32CFU Freescale Semiconductor, MC68HC705X32CFU Datasheet - Page 71

• 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

COS — Clear overrun status
RRB — Release receive buffer
When set this releases the receive buffer currently attached to the CPU, allowing the buffer to be
reused by the MCAN. This may result in another message being received, which could cause
another receive interrupt request (if RIE is set). This bit is cleared automatically when a message
is received, i.e. when the RS bit (see
AT — Abort transmission
When this bit is set a pending transmission will be cancelled if it is not already in progress, allowing
the transmit buffer to be loaded with a new (higher priority) message when the buffer is released.
If the CPU tries to write to the buffer when it is locked, the information will be lost without being
signalled. The status register can be checked to see if transmission was aborted or is still in
progress.
TR — Transmission request
MC68HC05X16
1 (set)
0 (clear) –
1 (set)
0 (clear) –
1 (set)
0 (clear) –
1 (set)
0 (clear) –
frame sequence (11 recessive bits). The designer must take this into consideration
when planning to use the sleep command.
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(see
frame or a remote frame will be transmitted.
the abort transmission command must be used to do this.
This clears the read-only data overrun status bit in the CSTAT register
No action.
Released – receive buffer is available to the MCAN.
No action.
Present – Abort transmission of any pending messages.
No action.
Present – Depending on the transmission buffer’s content, a data
No action. This will not cancel a previously requested transmission;
Section
MOTOROLA CAN MODULE (MCAN)
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5.3.3). It may be written at the same time as RRB.
Section
5.3.3) becomes set.
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