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參數(shù)資料
| 型號(hào)： | XR16C850 |
| 廠商： | Exar Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control |
| 中文描述： | UART的128字節(jié)FIFO的FIFO計(jì)數(shù)器和半雙工控制 |
| 文件頁數(shù)： | 10/55頁 |
| 文件大?。?/td> | 331K |
| 代理商： | XR16C850 |
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XR16C850
10
Rev. 1.20
Symbol
Pin
Signal
type
Pin Description
40
44
48
52
SYMBOL DESCRIPTION
S3 / -OP2
31
35
31
34
I/O
Select-3 or User Defined Output-2 (dual function
with internal pull-up) - When PC mode is selected,
S3 is used in conjunction with S1, S2 and A3-A9 to
select one of the PC COM port addresses. In the
STD mode this pin provides the user a general
purpose output. See bit-3 modem control register
(MCR bit-3).
SEL
-
34
36
39
I
Select Mode (internal pull-up) - The PC mode is
selected by a logic 0 (GND) on this pin and STD
mode is selected when this pin is a logic 1 (left open
or tied to VCC). This pin is not available on the 40 pin
PDIP packages which operate in the STD mode
only.
TC
-
-
-
13
I
Terminal Count Bit (internal pull-up). A high pulse
indicates terminal count for any DMA channel is
reached. Connect this pin to GND when not used.
-TXRDY
(See IRQC)
VCC
40
44
42
45
Pwr
Power Supply Input.
XTAL1
16
18
14
15
I
Crystal or External Clock Input - Functions as a
crystal input or as an external clock input. A crystal
can be connected between this pin and XTAL2 to
form an internal oscillator circuit. An external 1 M
resistor is required between the XTAL1 and XTAL2
pins (see figure 9). Alternatively, an external clock
can be connected to this pin to provide custom data
rates (Programming Baud Rate Generator section).
XTAL2
17
19
15
16
O
Output of the Crystal Oscillator or Buffered Clock -
(See also XTAL1). Crystal oscillator output or buff-
ered clock output.
-CD
38
42
40
43
I
Carrier Detect (active low) - A logic 0 on this pin
indicates that a carrier has been detected by the
modem.
-CTS
36
40
38
41
I
Clear to Send (active low) - A logic 0 on the -CTS pin
indicates the modem or data set is ready to accept
transmit data from the 850. Status can be tested by
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR16C850_05 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2.97V TO 5.5V UART WITH 128-BYTE FIFO |
| XR16C850CJ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| XR16C850CJ-F | 功能描述:UART 接口集成電路 UARTW/128BYTE FIFO 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 |
| XR16C850CJTR-F | 制造商:Exar Corporation 功能描述:UART 1-CH 128Byte FIFO 3.3V/5V 44-Pin PLCC T/R 制造商:Exar Corporation 功能描述:XR16C850CJTR-F |
| XR16C850CM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
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