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| 型号： | ST16C2550CQ-0A-EB |
| 厂商： | Exar Corporation |
| 文件页数： | 1/37页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR ST16C2550 |
| 标准包装： | 1 |
| 系列： | * |
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Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
ST16C2550
2.97V TO 5.5V DUART WITH 16-BYTE FIFO
JANUARY 2011
REV. 4.4.1
GENERAL DESCRIPTION
The ST16C2550 (C2550) is a dual universal
asynchronous receiver and transmitter (UART). The
ST16C2550 is an improved version of the PC16550
UART with higher operating speed and faster access
times. The C2550 provides enhanced UART
functions with 16 byte FIFO’s, a modem control
interface, and data rates up to 4 Mbps. Onboard
status registers provide the user with error indications
and operational status. System interrupts and modem
control features may be tailored by external software
to meet specific user requirements. Independent
programmable baud rate generators are provided to
select transmit and receive clock rates from 50 bps to
4 Mbps. The Baud Rate Generator can be configured
for either crystal or external clock input. An internal
loopback capability allows onboard diagnostics. The
C2550 is available in a 44-pin PLCC and 48-pin
TQFP packages. The C2550 is fabricated in an
advanced CMOS process capable of operating from
2.97 volt to 5.5 volt power supply.
APPLICATIONS
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
FEATURES
Added feature in devices with top mark date code
of "A2 YYWW" and newer:
■ 5 Volt Tolerant Inputs
Pin-to-pin compatible to Exar’s ST16C2450,
XR16L2550 and XR16L2750
Pin-to-pin compatible to TI’s TL16C752B on the 48-
TQFP package
Pin alike XR16C2850 48-TQFP package but
without CLK8/16, CLKSEL and HDCNTL inputs
2 independent UART channels
■ Up to 4 Mbps with external clock of 64 MHz
■ Up to 1.5 Mbps data rate with a 24 MHz crystal
frequency
■ 16 byte Transmit FIFO to reduce the bandwidth
requirement of the external CPU
■ 16 byte Receive FIFO with error tags to reduce
the bandwidth requirement of the external CPU
■ 4 selectable Receive FIFO interrupt trigger
levels
■ Modem control signals (CTS#, RTS#, DSR#,
DTR#, RI#, CD#)
■ Programmable character lengths (5, 6, 7, 8)
with even, odd, or no parity
Crystal oscillator or external clock input
48-TQFP and 44-PLCC packages
FIGURE 1. ST16C2550 BLOCK DIAGRAM
XTAL1
XTAL2
Crystal Osc/Buffer
TXA, RXA, DTRA#,
DSRA#, RTSA#,
DTSA#, CDA#, RIA#,
OP2A#
8-bit Data
Bus
Interface
UART Channel A
16 Byte TX FIFO
16 Byte RX FIFO
BRG
TX & RX
UART
Regs
2.97V to 5.5V
GND
TXB, RXB, DTRB#,
DSRB#, RTSB#,
CTSB#, CDB#, RIB#,
OP2B#
UART Channel B
(same as Channel A)
A2:A0
D7:D0
CSA#
CSB#
INTA
INTB
IOW#
IOR#
Reset
TXRDYA#
TXRDYB#
RXRDYA#
RDRXYB#
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST16C2550CQ-0B-EB | 功能描述:界面开发工具 Supports C2550 48 ld TQFP, PCI Interface RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| ST16C2550CQ48 | 制造商:Exar Corporation 功能描述: |
| ST16C2550CQ48-F | 功能描述:UART 接口集成电路 2.97V-5.5V 16B FIFO temp 0C to 70C; UART RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| ST16C2550CQ48TR-F | 功能描述:UART 接口集成电路 DUAL UART W/16BYTE FIFO RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| ST16C2550IJ44 | 制造商:Exar Corporation 功能描述: |
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