參數(shù)資料
型號(hào)： XR16L2552
廠商： Exar Corporation
英文描述： 2.25V TO 5.5V DUART WITH 16-BYTE FIFO
中文描述： 2.25V至5.5V的杜阿爾特16字節(jié)FIFO
文件頁(yè)數(shù)： 11/47頁(yè)
文件大?。?/td> 748K
代理商： XR16L2552
xr
REV. 1.1.1
XR16L2552
2.25V TO 5.5V DUART WITH 16-BYTE FIFO
11
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
.
The L2552 divides the basic external clock by 16. The basic 16X clock provides table rates to support standard
and custom applications using the same system design. The Baud Rate Generator divides this 16X clock by
any divisor from 1 to 2
16
-1. The rate table is configured via the DLL and DLM internal register functions.
Customized Baud Rates can be achieved by selecting the proper divisor values for the MSB and LSB sections
of baud rate generator.
Table 5
shows the standard data rates available with a 14.7456 MHz crystal or external clock at 16X sampling
rate. When using a non-standard frequency crystal or external clock, the divisor value can be calculated for
DLL/DLM with the following equation.
F
IGURE
6. O
PERATING
F
REQUENCY
C
HART
. R
EQUIRES
A
2K
OHMS
PULL
-
UP
RESIS
-
TOR
ON
XTAL2
PIN
TO
INCREASE
OPERATING
SPEED
divisor (decimal) = (XTAL1 or External clock frequency ) / (serial data rate x 16)
T
ABLE
5: T
YPICAL
DATA
RATES
WITH
A
14.7456 MH
Z
CRYSTAL
OR
EXTERNAL
CLOCK
O
UTPUT
Data Rate
MCR Bit-7=0
D
IVISOR
FOR
16x
Clock (Decimal)
D
IVISOR
FOR
16x
Clock (HEX)
DLM P
ROGRAM
V
ALUE
(HEX)
DLL P
ROGRAM
V
ALUE
(HEX)
D
ATA
R
ATE
E
RROR
(%)
400
2304
900
09
00
0
2400
384
180
01
80
0
4800
192
C0
00
C0
0
9600
96
60
00
60
0
19.2k
48
30
00
30
0
38.4k
24
18
00
18
0
76.8k
12
0C
00
0C
0
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 XR16L2552
with external clock and a 2K ohms
pull-up resistor on XTAL2 pin.
相關(guān)PDF資料
PDF描述
XR16L2750CJ 2.25V TO 5.5V DUART WITH 64-BYTE FIFO
XR16L2750CM 2.25V TO 5.5V DUART WITH 64-BYTE FIFO
XR16L2750IJ 2.25V TO 5.5V DUART WITH 64-BYTE FIFO
XR16L2750IM 2.25V TO 5.5V DUART WITH 64-BYTE FIFO
XR16L2750 2.25V TO 5.5V DUART WITH 64-BYTE FIFO
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16L2552IJ 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:
XR16L2552IJ-0A-EB 功能描述:UART 接口集成電路 Supports L2552 44 ld PLCC, ISA Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR16L2552IJ-F 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR16L2552IJTR 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:
XR16L2552IJTR-F 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
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