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參數(shù)資料
| 型號(hào)： | ST16C450IQ48-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 28/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART SINGLE 48TQFP |
| 標(biāo)準(zhǔn)包裝： | 250 |
| 特點(diǎn)： | * |
| 通道數(shù)： | 1，UART |
| FIFO's： | 1 字節(jié) |
| 電源電壓： | 2.97 V ~ 5.5 V |
| 帶故障啟動(dòng)位檢測(cè)功能： | 是 |
| 帶調(diào)制解調(diào)器控制功能： | 是 |
| 帶CMOS： | 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： | 1016-1667 ST16C450IQ48-F-ND |
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ST16C450
9
Rev. 4.20
Programmable Baud Rate Generator
The ST16C450 supports high speed modem tech-
nologies that have increased input data rates by
employing data compression schemes. For example
a 33.6Kbps modem that employs data compression
may require a 115.2Kbps input data rate. A 128.0Kbps
ISDN modem that supports data compression may
need an input data rate of 460.8Kbps. The ST16C450
can support a standard data rate of 921.6Kbps.
The programmable Baud Rate Generator is capable of
accepting an input clock up to 24 MHz, as required for
supporting a 1.5Mbps data rate. The ST16C450 can be
configured for internal or external clock operation. For
internal clock oscillator operation, an industry standard
microprocessor crystal (parallel resonant/ 22-33 pF
load) is connected externally between the XTAL1 and
XTAL2 pins, with an external 1 M
resistor across it.
Table 3, BAUD RATE GENERATOR PROGRAMMING TABLE (1.8432 MHz CLOCK):
Output
User
DLM
DLL
Baud Rate
16 x Clock
Program
Divisor
Value
(Decimal)
(HEX)
50
2304
900
09
00
75
1536
600
06
00
150
768
300
03
00
300
384
180
01
80
600
192
C0
00
C0
1200
96
60
00
60
2400
48
30
00
30
4800
24
18
00
18
7200
16
10
00
10
9600
12
0C
00
0C
19.2k
6
06
00
06
38.4k
3
03
00
03
57.6k
2
02
00
02
115.2k
1
01
00
01
Alternatively, an external clock can be connected to the
XTAL1 pin to clock the internal baud rate generator for
standard or custom rates. See figure 3 for crystal
oscillator connection.
The generator divides the input 16X clock by any
divisor from 1 to 216 -1. The ST16C450 divides the
basic crystal or external clock by 16. The frequency of
the -BAUDOUT output pin is exactly 16X (16 times) of
the selected baud rate (-BAUDOUT =16 x Baud Rate).
Customized Baud Rates can be achieved by selecting
the proper divisor values for the MSB and LSB sections
of baud rate generator.
Programming the Baud Rate Generator Registers DLM
(MSB) and DLL (LSB) provides a user capability for
selecting the desired final baud rate. The example in
Table 3 below.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST16C450IQ48TR-F | 制造商:Exar Corporation 功能描述:UART 1-CH 1Byte FIFO 3.3V/5V 48-Pin TQFP T/R 制造商:Exar Corporation 功能描述:ST16C450 Series 1.5 Mbps 5.5 V Universal Asynchronous UART - TQFP-48 制造商:Exar Corporation 功能描述:ST16C450IQ48TR-F |
| ST16C452 | 制造商:EXAR 制造商全稱:EXAR 功能描述:DUAL UART WITH PARALLEL PRINTER PORT |
| ST16C452CJ68 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:UART 2-CH 3.3V/5V 68-Pin PLCC |
| ST16C452CJ68-F | 功能描述:UART 接口集成電路 DUAL UART W/PARALEL PRINTER PORT 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 |
| ST16C452CJ68PS | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
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