S9S12GN16F0MLF Freescale Semiconductor, S9S12GN16F0MLF Datasheet - Page 693

• Manufacturer Part Number: S9S12GN16F0MLF
• Description: 16-bit Microcontrollers - MCU 16-bit16k Flash 2k RAM
• Manufacturer: Freescale Semiconductor

Specifications of S9S12GN16F0MLF

• Rohs: yes
• Core: S12
• Processor Series: MC9S12G
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 25 MHz
• Program Memory Size: 16 KB
• Data Ram Size: 1024 B
• On-chip Adc: Yes
• Operating Supply Voltage: 3.13 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: TSSOP-20
• Mounting Style: SMD/SMT

Figure 20-25
synchronization with the start bit time, it does set the noise flag.
Figure 20-26
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
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.1.23
Figure 20-24. Start Bit Search Example 3
Figure 20-25. 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
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