参数资料
型号: XR16L2552IJTR-F
厂商: Exar Corporation
文件页数: 3/45页
文件大小: 0K
描述: IC UART FIFO 16B DUAL 44PLCC
标准包装: 500
特点: *
通道数: 2,DUART
FIFO's: 16 字节
规程: RS232
电源电压: 2.25 V ~ 5.5 V
带自动流量控制功能:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 44-LCC(J 形引线)
供应商设备封装: 44-PLCC(16.59x16.59)
包装: 带卷 (TR)
XR16L2552
11
REV. 1.1.2
2.25V TO 5.5V DUART WITH 16-BYTE FIFO
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 216 -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.
FIGURE 6. OPERATING FREQUENCY CHART. REQUIRES 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)
TABLE 5: TYPICAL DATA RATES WITH A 14.7456 MHZ CRYSTAL OR EXTERNAL CLOCK
OUTPUT Data Rate
MCR Bit-7=0
DIVISOR FOR 16x
Clock (Decimal)
DIVISOR FOR 16x
Clock (HEX)
DLM PROGRAM
VALUE (HEX)
DLL PROGRAM
VALUE (HEX)
DATA RATE
ERROR (%)
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
XT
A
L1
E
x
te
rn
al
Cloc
k
F
reque
ncy
in
MHz
.
70
80
85oC
25oC
-40oC
Operating frequency for XR16L2552
with external clock and a 2K ohms
pull-up resistor on XTAL2 pin.
相关PDF资料
PDF描述
ST16C2550CQ48TR-F IC UART FIFO 16B DUAL 48TQFP
ATMEGA168-15MT1 MCU AVR 16K FLASH 15MHZ 32-QFN
ATMEGA168-15MT MCU AVR 16K FLASH 15MHZ 32-QFN
ST16C1450IQ48-F IC UART FIFO 1B 48TQFP
XR68M752IL32-F IC UART FIFO 64B DUAL 32QFN
相关代理商/技术参数
参数描述
XR16L2552IM 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:
XR16L2552IM-F 功能描述:UART 接口集成电路 UART RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel
XR16L2552IMTR-F 制造商:Exar Corporation 功能描述:UART 2-CH 16Byte FIFO 2.5V/3.3V/5V 48-Pin TQFP T/R 制造商:Exar Corporation 功能描述:XR16L2552IMTR-F
XR16L2750 制造商:EXAR 制造商全称:EXAR 功能描述:2.25V TO 5.5V DUART WITH 64-BYTE FIFO
XR16L2750_05 制造商:EXAR 制造商全称:EXAR 功能描述:2.25V TO 5.5V DUART WITH 64-BYTE FIFO