S912XET512J3VALR Freescale Semiconductor, S912XET512J3VALR Datasheet - Page 752
S912XET512J3VALR
Manufacturer Part Number
S912XET512J3VALR
Description
16-bit Microcontrollers - MCU 16 BIT,512K FLASH
Manufacturer
Freescale Semiconductor
Datasheet
1.S912XEG128J2MAL.pdf
(1324 pages)
Specifications of S912XET512J3VALR
Rohs
yes
Core
HCS12X
Processor Series
MC9S12XE
Data Bus Width
16 bit
Maximum Clock Frequency
50 MHz
Program Memory Size
512 KB
Data Ram Size
32 KB
On-chip Adc
Yes
Operating Supply Voltage
3.13 V to 5.5 V
Operating Temperature Range
- 40 C to + 105 C
Package / Case
LQFP-112
Mounting Style
SMD/SMT
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S912XET512J3VALR
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 20 Serial Communication Interface (S12SCIV5)
In
at RT5 is high. The RT5 sample sets the noise flag. Although this is a worst-case misalignment of perceived
bit time, the data samples RT8, RT9, and RT10 are within the bit time and data recovery is successful.
Figure 20-25
synchronization with the start bit time, it does set the noise flag.
752
Figure
RT Clock Count
Reset RT Clock
RT Clock Count
Reset RT Clock
RT Clock
RT Clock
Samples
Samples
20-24, a large burst of noise is perceived as the beginning of a start bit, although the test sample
RXD
RXD
shows the effect of noise early in the start bit time. Although this noise does not affect proper
1
1
1
1
1
1
1
0
1
MC9S12XE-Family Reference Manual Rev. 1.25
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
Freescale Semiconductor
LSB
LSB
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