參數(shù)資料
型號: XR16L2550
廠商: Exar Corporation
英文描述: LOW VOLTAGE DUART WITH 16-BYTE FIFO
中文描述: 低壓杜阿爾特16字節(jié)FIFO
文件頁數(shù): 10/45頁
文件大?。?/td> 278K
代理商: XR16L2550
XR16L2550
LOW VOLTAGE DUART WITH 16-BYTE FIFO
á
REV. 1.0.0
10
2.9
A single baud rate generator is provided for the transmitter and receiver, allowing independent TX/RX channel
control. The programmable Baud Rate Generator is capable of operating with a crystal frequency of up to 24
MHz. However, with an external clock input on XTAL1 pin and a 2K ohms pull-up resistor on XTAL2 pin (as
shown in
Figure 5
) it can extend its operation up to 64 MHz (4Mbps serial data rate) at room temperature and
5.0V.
Programmable Baud Rate Generator
To obtain maximum data rate, it is necessary to use full rail swing on the clock input. See external clock
operating frequency over power supply voltage chart in
Figure 6
.
F
IGURE
5. E
XTERNAL
C
LOCK
C
ONNECTION
FOR
E
XTENDED
D
ATA
R
ATE
F
IGURE
6. O
PERATING
F
REQUENCY
C
HART
. R
EQUIRES
A
2K
OHMS
PULL
-
UP
RESISTOR
ON
XTAL2
PIN
TO
INCREASE
OPERATING
SPEED
2K
XTAL1
XTAL2
R1
VCC
External Clock
vcc
gnd
60
50
40
30
3.0
4.5
5.5
3.5 4.0
5.0
Suppy Voltage
X
70
80
85
o
C
25
o
C
-40
o
C
Operating frequency for XR16L2550
with external clock and a 2K ohms
pull-up resistor on XTAL2 pin.
相關PDF資料
PDF描述
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