Dual Uart Ic W/16byte Fifo Integrated Circuit ST16C2550IQ48TR-F

Product Specification

UART interface integrated circuit DUAL UART W/16BYTE FIFO ST16C2550IQ48TR-F

 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

Packaging and transportation instructions

- According to the standard export packaging.

Customers can choose from cartons, wooden cases and wooden pallets according to their own requirements.

Q&A

1. How to obtain the price?

We usually quote within 24 hours after receiving your inquiry (except weekends and holidays). If you are in urgent need of a price, please send us an email or contact us in any other way so that we can provide you with a quotation.

2. What is your delivery time?

This depends on the quantity of the order and the season in which you place the order. Usually, we can ship the goods within 7 to 15 days (for small batches), and for large batches, it takes about 30 days.

3. What are your payment terms?

Factory price, 30% deposit, 70%T/T payment before shipment.

4. What is the mode of transportation?

It can be transported by sea, air or express delivery (EMS, UPS, DHL, TNT, FEDEX, etc.). Please confirm with us before placing an order.

5. How do you help our business establish a long-term and good relationship?

We maintain good quality and competitive prices to ensure that our customers benefit.

2. We respect every customer as our friend. We do business with them sincerely and make friends with them, no matter where they come from.