S9S12HY64J0MLL Freescale Semiconductor, S9S12HY64J0MLL Datasheet - Page 447

• Manufacturer Part Number: S9S12HY64J0MLL
• Description: MCU 64K FLASH AUTO 100-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of S9S12HY64J0MLL

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 32MHz
• Connectivity: CAN, EBI/EMI, I²C, IrDA, LIN, SCI, SPI
• Peripherals: LCD, Motor control PWM, POR, PWM, WDT
• Number Of I /o: 80
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 100-LQFP
• Controller Family/series: S12
• No. Of I/o's: 80
• Ram Memory Size: 4KB
• Cpu Speed: 64MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• Processor Series: S12HY
• Core: HCS12
• 3rd Party Development Tools: EWHCS12
• Development Tools By Supplier: DEMO9S12HY64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

indicating that the received byte can be read. If the receive interrupt enable bit, RIE, in SCI control
register 2 (SCICR2) is also set, the RDRF flag generates an RDRF interrupt request.
12.4.6.3
The RT clock rate. The RT clock is an internal signal with a frequency 16 times the baud rate. To adjust
for baud rate mismatch, the RT clock (see
To locate the start bit, data recovery logic does an asynchronous search for a logic 0 preceded by three logic
1s.When the falling edge of a possible start bit occurs, the RT clock begins to count to 16.
To verify the start bit and to detect noise, data recovery logic takes samples at RT3, RT5, and RT7.
Figure 12-17
If start bit verification is not successful, the RT clock is reset and a new search for a start bit begins.
Freescale Semiconductor
RT CLock Count
•
•
Reset RT Clock
After every start bit
After the receiver detects a data bit change from logic 1 to logic 0 (after the majority of data bit
samples at RT8, RT9, and RT10 returns a valid logic 1 and the majority of the next RT8, RT9, and
RT10 samples returns a valid logic 0)
RT Clock
Samples
RXD
Data Sampling
summarizes the results of the start bit verification samples.
1
RT3, RT5, and RT7 Samples
1
1
1
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
000
001
010
011
100
101
110
111
1
1
Figure 12-21. Receiver Data Sampling
Qualification
Start Bit
Table 12-17. Start Bit Verification
1
1
Figure
0
0
12-21) is re-synchronized:
Start Bit Verification
Verification
Start Bit
0
Yes
Yes
Yes
Yes
No
No
No
No
0
Start Bit
0
Sampling
Data
0
0
Serial Communication Interface (S12SCIV5)
Noise Flag
0
1
1
0
1
0
0
0
LSB
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