MC9S12G FREESCALE [Freescale Semiconductor, Inc], MC9S12G Datasheet - Page 593

• Manufacturer Part Number: MC9S12G
• Description: Ignores external trigger. Performs one conversion sequence and stops.
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Figure 18-25
synchronization with the start bit time, it does set the noise flag.
Figure 18-26
after the reset is low but is not preceded by three high samples that would qualify as a falling edge.
Depending on the timing of the start bit search and on the data, the frame may be missed entirely or it may
set the framing error flag.
Freescale Semiconductor
RT Clock Count
Reset RT Clock
RT Clock Count
Reset RT Clock
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.
RT Clock
RT Clock
Samples
Samples
RXD
RXD
shows the effect of noise early in the start bit time. Although this noise does not affect proper
shows a burst of noise near the beginning of the start bit that resets the RT clock. The sample
1
1
1
1
1
1
1
0
1
MC9S12G Family Reference Manual, Rev.1.01
Figure 18-24. Start Bit Search Example 3
Figure 18-25. Start Bit Search Example 4
1
0
1
1
1
1
Perceived Start Bit
0
0
0
1
0
0
Perceived and Actual Start Bit
0
Actual Start Bit
Serial Communication Interface (S12SCIV5)
LSB
LSB
593