- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄3766 > ST16C2450IQ48-F (Exar Corporation)IC UART FIFO DUAL 48TQFP PDF資料下載
參數(shù)資料
| 型號(hào)： | ST16C2450IQ48-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 29/30頁 |
| 文件大小： | 0K |
| 描述： | IC UART FIFO DUAL 48TQFP |
| 標(biāo)準(zhǔn)包裝： | 250 |
| 特點(diǎn)： | * |
| 通道數(shù)： | 2，DUART |
| FIFO's： | 1 字節(jié) |
| 規(guī)程： | RS232 |
| 電源電壓： | 2.97 V ~ 5.5 V |
| 帶故障啟動(dòng)位檢測功能： | 是 |
| 帶調(diào)制解調(diào)器控制功能： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-TQFP |
| 供應(yīng)商設(shè)備封裝： | 48-TQFP（7x7） |
| 包裝： | 托盤 |
| 其它名稱： | 1016-1670 ST16C2450IQ48-F-ND |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁當(dāng)前第29頁第30頁
ST16C2450
xr
2.97V TO 5.5V DUART
REV. 4.0.1
8
2.7
Programmable Baud Rate Generator
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 or external
clock of up to 24 MHz.
The 2450 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 the input 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 3 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.
2.8
Transmitter
The transmitter section comprises of an 8-bit Transmit Shift Register (TSR) and 1 byte FIFO or Transmit
Holding Register (THR). TSR shifts out every data bit with the 16X internal clock. A bit time is 16 clock periods.
The transmitter sends the start-bit followed by the number of data bits, inserts the proper parity-bit if enabled,
and adds the stop-bit(s). The status of the FIFO and TSR are reported in the Line Status Register (LSR bit-5
and bit-6).
2.8.1
Transmit Holding Register (THR) - Write Only
The host loads transmit data to THR one character at a time. The THR empty flag (LSR bit-5) is set when the
data byte is transferred to TSR. THR flag can generate a transmit empty interrupt (ISR bit-1) when it is enabled
by IER bit-1. The TSR flag (LSR bit-6) is set when TSR becomes completely empty.
divisor (decimal) = (XTAL1 clock frequency) / (serial data rate x 16)
TABLE 3: 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
153.6k
6
06
00
06
0
230.4k
4
04
00
04
0
460.8k
2
02
00
02
0
921.6k
1
01
00
01
0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX7314AEG+T | IC I/O EXPANDER I2C 16B 24QSOP |
| ST16C550IQ48-F | IC UART FIFO 16B SGL 48TQFP |
| MAX7318AWG+T | IC PORT EXPANDER 16BIT 24SOIC |
| XR20M1170IL24-F | IC UART FIFO I2C/SPI 64B 24QFN |
| MAX7318AAG+T | IC I/O EXPANDER I2C 16B 24SSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST16C2450IQ48TR-F | 制造商:Exar Corporation 功能描述:UART 2-CH 1Byte FIFO 3.3V/5V 48-Pin TQFP T/R 制造商:Exar Corporation 功能描述:ST16C2450IQ48TR-F |
| ST16C2451 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.97V TO 5.5V DUART |
| ST16C2550 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.97V TO 5.5V DUART WITH 16-BYTE FIFO |
| ST16C2550_04 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.97V TO 5.5V DUART WITH 16-BYTE FIFO |
| ST16C2550CJ-0A-EB | 功能描述:界面開發(fā)工具 Supports C2550 44 ld PLCC, ISA Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。