MC68HC05X16 Datasheet, PDF (70/232 Pages) Freescale Semiconductor, Inc – High-density complementary metal oxide semiconductor HCMOS) microcontroller unit

Freescale Semiconductor, Inc.
RX0 — Receive pin 0 (passive) (Refer to Figure 5-6)
1 (set) – VDD/2 will be connected to the input comparator. The RX0 pin is
disconnected.
0 (clear) – The RX0 pin will be connected to the input comparator. VDD/2 is
disconnected.
RX1 — Receive pin 1 (passive) (Refer to Figure 5-6)
1 (set) – VDD/2 will be connected to the input comparator. The RX1 pin is
disconnected.
0 (clear) – The RX1 pin will be connected to the input comparator. VDD/2 is
5
disconnected.
Note:
If both RX0 and RX1 are set, or both are clear, then neither of the RX pins will be
disconnected.
COMPSEL — Comparator selector
1 (set) – RX0 and RX1 will be compared with VDD/2 during sleep mode (see
Figure 5-6).
0 (clear) – RX0 will be compared with RX1 during sleep mode.
SLEEP — Go to sleep
1 (set)
– Sleep – The MCAN will go into sleep mode, as long as there are no
interrupts pending and there is no activity on the bus. Otherwise the
MCAN will issue a wake-up interrupt.
0 (clear) –
Wake-up – The MCAN will function normally. If SLEEP is cleared by
the CPU then the MCAN will waken up, but will not issue a wake-up
interrupt.
Note:
If SLEEP is set during the reception or transmission of a message, the MCAN will
generate an immediate wake-up interrupt. (This allows for a more orthogonal software
implementation on the CPU.) This will have no effect on the transfer layer, i.e. no
message will be lost or corrupted.
The CAF flag in the EEPROM control register indicates whether or not sleep mode was
entered successfully.
A node that was sleeping and has been awakened by bus activity will not be able to
receive any messages until its oscillator has started and it has found a valid end of
MOTOROLA CAN MODULE (MCAN)
MC68HC05X16
For More Information On This Product,
Rev. 1
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