CP3UB26G18NEPX National Semiconductor, CP3UB26G18NEPX Datasheet - Page 158
CP3UB26G18NEPX
Manufacturer Part Number
CP3UB26G18NEPX
Description
Manufacturer
National Semiconductor
Datasheet
1.CP3UB26G18NEPX.pdf
(270 pages)
Specifications of CP3UB26G18NEPX
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
128
Package Type
LQFP
Lead Free Status / RoHS Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CP3UB26G18NEPX
Manufacturer:
Texas Instruments
Quantity:
10 000
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Data bits are sensed by taking a majority vote of three sam-
ples latched near the midpoint of each baud (bit time). Nor-
mally, the position of the samples within the baud is
determined automatically, but software can override the au-
tomatic selection by setting the USMD bit in the UnMDSL2
register and programming the UnSPOS register.
Serial data input on the RXD pin is shifted into the RSFT
register. On receiving the complete character, the contents
16
16
1
1
Sample
2
2
Figure 67. UART Asynchronous Communication
3
3
STARTBIT
DATABIT
4
4
Figure 66. UART Block Diagram
5
5
6
6
7
7
158
8
8
of the RSFT register are copied into the UnRBUF register
and the Receive Buffer Full bit (URBF) is set. The URBF bit
is automatically cleared when software reads the character
from the URBUF register. The RSFT register is not software
accessible.
9
9
Sample
Sample
10
10
11
11
12
12
13
13
14
14
15
15
16
16
DATA (LSB)
DS061
1
1
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