參數(shù)資料
型號(hào)： XR16C850
廠商： Exar Corporation
元件分類(lèi)： 通用總線(xiàn)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(yè)數(shù)： 9/55頁(yè)
文件大?。?/td> 331K
代理商： XR16C850
XR16C850
9
Rev. 1.20
Symbol
Pin
Signal
type
Pin Description
40
44
48
52
SYMBOL DESCRIPTION
mode is selected, this pin functions as the LPT-2
printer port decode logic output, see table 2. During
the STD mode this pin goes to a logic 0 when the
external CPU is reading data from the 850. This
signal can be used to disable external transceivers
or other logic functions. Also, this pin may be D12
signal when BUS16 is selected in 48 and 52 pin
packages.
-OP1/RS485
34
38
34
37
O
Output-1(User Defined) or RS-485 direction control
signal. General purpose output during normal opera-
tion - See bit-2 of modem control register (MCR bit-
2). RS-485 direction control can be selected when
FCTR Bit-3 is set to “1”. During data transmit cycle,
-OP1/RS485 pin is low.
-OP2
(See S3)
RCLK
(See S2)
RESET
35
39
35
38
I
Reset. (active high) - A logic 1 on this pin will reset
the internal registers and all the outputs. During
reset, the UART transmitter output and the receiver
input are disabled, the data bus is still controlled by
CS0, CS1, -CS2 and -IOR. (See XR16C850 External
Reset Conditions for initialization details.)
-RXRDY
(See IRQB)
S1
-
23
21
23
I
Port Select-1 (internal pull-up) - When PC mode is
selected, S1 is used in conjunction with S2, S3 and
A3-A9 to select one of the PC COM port addresses
(see Table 2 Internal Address Decode Function)
This pin has no function in the STD mode.
S2 / RCLK
9
10
5
5
I
Port Select-2 or Receive Clock Input (dual function
input with internal pull-up) - When PC mode is
selected, the RCLK input is connected internally to
-BAUDOUT and S2 is used in conjunction with S1,
S3 and A3-A9 to select one of the PC COM port
addresses. During STD mode operation, this pin is
used as external 16X clock input to the receiver
section, normally it’s connected to -BAUDOUT.
相關(guān)PDF資料
PDF描述
XR16C854 QUAD UART WITH RX/TX FIFO COUNTERS,128-BYTE FIFO
XR16C854CJ QUAD UART WITH RX/TX FIFO COUNTERS,128-BYTE FIFO
XR16C854CQ QUAD UART WITH RX/TX FIFO COUNTERS,128-BYTE FIFO
XR16C854CV QUAD UART WITH RX/TX FIFO COUNTERS,128-BYTE FIFO
XR16C854DCV QUAD UART WITH RX/TX FIFO COUNTERS,128-BYTE FIFO
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(chēng):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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