參數(shù)資料
型號(hào)： ST16C2550
廠(chǎng)商： Exar Corporation
英文描述： Dual UART with 16-Byte of Transmit and Receive FIFO(雙通用異步接收器/發(fā)送器（帶16字節(jié)接收和發(fā)送先進(jìn)先出）)
中文描述： 雙UART具有16的發(fā)送和接收FIFO（雙通用異步接收器/發(fā)送器（帶16字節(jié)接收和發(fā)送先進(jìn)先出字節(jié)））
文件頁(yè)數(shù)： 5/34頁(yè)
文件大?。?/td> 314K
代理商： ST16C2550
ST16C2550
5
Rev. 3.40
SYMBOL DESCRIPTION
Symbol
Pin
44
Signal
type
Pin Description
40
48
individual channels, A through B. The state at these pin(s) are
defined by the user and through MCR register bit-3. INT A-B
are set to the active mode and OP2 to a logic 0 when MCR-
3 is set to a logic 1. INT A-B are set to the three state mode
and OP2 to a logic 1 when MCR-3 is set to a logic 0. See bit-
3, Modem Control Register (MCR bit-3). Since these bits
control both the INT A-B operation and OP2 outputs, only one
function should be used at one time, INT or OP2.
RESET
35
39
36
I
Reset. (active high) - A logic 1 on this pin will reset the internal
registers and all the outputs. The UART transmitter output and
the receiver input will be disabled during reset time. (See
ST16C2550 External Reset Conditions for initialization de-
tails.)
-RXRDY A-B
-
34,23
31,18
O
Receive Ready A-B (active low) - This function is associ-
ated with 44 pin PLCC and 48 pin TQFP packages only. This
function provides the RX FIFO/RHR status for individual
receive channels (A-B). RXRDY is primarily intended for
monitoring DMA mode 1 transfers for the receive data
FIFO’s. A logic 0 indicates there is receive data to read/
unload, i.e., receive ready status with one or more RX
characters available in the FIFO/RHR. This pin is a logic 1
when the FIFO/RHR is empty or when the programmed
trigger level has not been reached. This signal can also be
used for single mode transfers (DMA mode 0).
-TXRDY A-B
-
1,12
43,6
O
Transmit Ready A-B (active low) - This function is associ-
ated with 44 pin PLCC and 48 pin TQFP packages only.
These outputs provide the TX FIFO/THR status for indi-
vidual transmit channels (A-B). TXRDY is primarily in-
tended for monitoring DMA mode 1 transfers for the trans-
mit data FIFO’s. An individual channel’s -TXRDY A-B buffer
ready status is indicated by logic 0, i.e., at least one location
is empty and available in the FIFO or THR. This pin goes to
a logic 1 (DMA mode 1) when there are no more empty
locations in the FIFO or THR. This signal can also be used for
single mode transfers (DMA mode 0).
VCC
40
44
42
Pwr
Power supply input.
相關(guān)PDF資料
PDF描述
ST16C2552 Dual UART with 16-Byte Transmit and Receive FIFO(雙通用異步接收器/發(fā)送器（帶16字節(jié)接收和發(fā)送先進(jìn)先出）)
ST16C450 UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART)
ST16C450CJ44 UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART)
ST16C450CP40 UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART)
ST16C450CQ48 UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST16C2550_04 制造商:EXAR 制造商全稱(chēng):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(kāi)發(fā)工具 Supports C2550 44 ld PLCC, ISA Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類(lèi)型:RS-485 工具用于評(píng)估:ADM3485E 接口類(lèi)型:RS-485 工作電源電壓:3.3 V
ST16C2550CJ44 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:2.97V TO 5.5V DUART WITH 16-BYTE FIFO
ST16C2550CJ44-F 功能描述:UART 接口集成電路 2.97V-5.5V 16B FIFO temp 0C to 70C; UART 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
ST16C2550CJ44TR-F 功能描述:UART 接口集成電路 DUAL UART W/16BYTE 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
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