DS2480 Dallas Semiconducotr, DS2480 Datasheet - Page 24
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DS2480
Manufacturer Part Number
DS2480
Description
Serial 1.Wire Line Driver
Manufacturer
Dallas Semiconducotr
Datasheet
1.DS2480.pdf
(26 pages)
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RS232 DATA TIMING TXD LINE Figure 13
FUNCTION AND SPEED MATRIX Table 7
X
TXD LINE ASYMMETRY Figure 14
DS2480
042498 24/26
V
IL
t
not recommended unless t
IDLET
115200 bps
115200 bps
B
Baud Rate
19200 bps
19200 bps
57600 bps
57600 bps
9600 bps
9600 bps
START
1.5 T
V
is guaranteed by the UART; no precautions necessary
d R
IH
R
BIT 0
STOP
T
T
BIT 1
2.5 T
= 1/BAUD RATE OF UART
R
IDLET
t
START
Regular
BIT 2
3.5 T
T
X
X
X
X
X
is controlled by the host through a wait function
T
= T
(DIAGRAM DRAWN FOR POL = 5V)
R
START
T
+ (–) t
BIT 3
4.5 T
1–Wire Speed
ASYM
10 T
Flexible
R
T
2t
X
X
X
X
X
X
T
2T
ASYM
R
DIAGRAM DRAWN FOR POL = 5V)
5.5 T
BIT 4
T
= 1/BAUD RATE OF DEVICE
R
t
BIT0
Overdrive
BIT 0
6.5 T
BIT 5
= T
T
R
X
– (+) t
7.5 T
ASYM
BIT 6
R
Search
Command/Data
Search
Command/Data
Search
Command/Data
Search
Command/Data
BIT 1
8.5 T
BIT 7
R
t
IDLET
F
Function
9.5 T
STOP
R
i