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XR16C2850IJ-F

Description
IC UART FIFO 128B 44PLCC
Categorysemiconductor    Analog mixed-signal IC   
File Size503KB,51 Pages
ManufacturerMaxLinear Inc.
Environmental Compliance
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XR16C2850IJ-F Overview

IC UART FIFO 128B 44PLCC

XR16C2850IJ-F Parametric

Parameter NameAttribute value
characteristicInternal oscillator, timer/counter
Number of channels2,DUART
FIFO128 bytes
protocolRS232,RS485
Data rate (maximum)6.25Mbps
Voltage - Power2.97 V ~ 5.5 V
With automatic flow controlyes
With IrDA encoder/decoderyes
With false start bit detectionyes
with modem controlyes
Installation typesurface mount
Package/casing44-LCC (J-lead)
Supplier device packaging44-PLCC(16.59x16.59)
xr
NOVEMBER 2005
XR16C2850
2.97V TO 5.5V DUAL UART WITH 128-BYTE FIFOS
REV. 2.1.3
GENERAL DESCRIPTION
The XR16C2850
1
(2850) is an enhanced dual
universal asynchronous receiver and transmitter
(UART). Enhanced features include 128 bytes of TX
and RX FIFOs, programmable TX and RX FIFO
trigger level, FIFO level counters, automatic (RTS/
CTS) hardware and (Xon/Xoff) software flow control,
automatic RS-485 half duplex direction control output
and data rates up to 6.25 Mbps at 5V and 8X
sampling clock.
Onboard status registers provide the user
with operational status and data error flags. An internal
loopback capability allows system diagnostics.
The 2850
has a full modem interface and can operate at 2.97V
to 5.5V and is pin-to-pin compatible to Exar’s
ST16C2550 and XR16C2750 except the 48-TQFP
package. The 2850 register set is compatible to the
industry standard ST16C2550 and is available in 48-
pin TQFP and 44-pin PLCC packages.
N
OTE
:
1 Covered by U.S. Patent #5,649,122 and #5,949,787
FEATURES
Added feature in devices with a top mark date code of
"F2 YYWW" and newer:
5V tolerant inputs
0 ns address hold time (T
AH
)
Pin-to-pin compatible and functionally compatible to
Exar’s ST16C2550 and XR16L2750 and TI’s
TL16C752B in the 48-TQFP package
Pin-alike Exar’s XR16L2750 and ST16C2550 48-
TQFP package but with additional CLK8/16,
CLKSEL and HDCNTL inputs
Two independent UART channels
APPLICATIONS
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
Register set compatible to 16C550
Up to 6.25 Mbps at 5V, and 4 Mbps at 3.3V
Transmit and Receive FIFOs of 128 bytes
Programmable TX and RX FIFO Trigger Levels
Transmit and Receive FIFO Level Counters
Automatic Hardware (RTS/CTS) Flow Control
Selectable Auto RTS Flow Control Hysteresis
Automatic Software (Xon/Xoff) Flow Control
Auto RS-485 Half-duplex Direction Control
Wireless Infrared (IrDA 1.0) Encoder/Decoder
Full modem interface
Device Identification and Revision
Crystal oscillator or external clock input
Industrial and commercial temperature ranges
48-TQFP and 44-PLCC packages
F
IGURE
1. XR16C2850 B
LOCK
D
IAGRAM
A2:A0
D7:D0
IOR#
IOW#
CSA#
CSB#
INTA
INTB
TXRDYA#
TXRDYB#
RXRDYA#
RXRDYB#
HDCNTL#
CLKSEL
CLK8/16
Reset
8-bit Data
Bus
Interface
UART Channel A
UART
Regs
BRG
128 Byte TX FIFO
TX & RX
IR
ENDEC
2.97V to 5.5V VCC
GND
TXA, RXA, DTRA#,
DSRA#, RTSA#,
DTSA#, CDA#, RIA#,
OP2A#
128 Byte RX FIFO
TXB, RXB, DTRB#,
DSRB#, RTSB#,
CTSB#, CDB#, RIB#,
OP2B#
XTAL1
XTAL2
UART Channel B
(same as Channel A)
Crystal Osc/Buffer
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com

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Description IC UART FIFO 128B 44PLCC IC UART FIFO 128B 44PLCC IC UART FIFO 128B DUAL 48TQFP IC UART FIFO 128B DUAL 48TQFP IC UART FIFO 128B 44PLCC IC UART FIFO 128B 44PLCC IC DUART 2.97V - 5.5V 48TQFP IC DUART 2.97V - 5.5V 48TQFP
characteristic Internal oscillator, timer/counter Internal oscillator, timer/counter Internal oscillator, timer/counter Internal oscillator, timer/counter Internal oscillator, timer/counter Internal oscillator, timer/counter Internal oscillator, timer/counter Internal oscillator, timer/counter
Number of channels 2,DUART 2,DUART 2,DUART 2,DUART 2,DUART 2,DUART 2,DUART 2,DUART
FIFO 128 bytes 128 bytes 128 bytes 128 bytes 128 bytes 128 bytes 128 bytes 128 bytes
protocol RS232,RS485 RS232,RS485 RS232,RS485 RS232,RS485 RS232,RS485 RS232,RS485 RS232,RS485 RS232,RS485
Data rate (maximum) 6.25Mbps 6.25Mbps 6.25Mbps 6.25Mbps 6.25Mbps 6.25Mbps 6.25Mbps 6.25Mbps
Voltage - Power 2.97 V ~ 5.5 V 2.97 V ~ 5.5 V 2.97 V ~ 5.5 V 2.97 V ~ 5.5 V 2.97 V ~ 5.5 V 2.97 V ~ 5.5 V 2.97 V ~ 5.5 V 2.97 V ~ 5.5 V
With automatic flow control yes yes yes yes yes yes yes yes
With IrDA encoder/decoder yes yes yes yes yes yes yes yes
With false start bit detection yes yes yes yes yes yes yes yes
with modem control yes yes yes yes yes yes yes yes
Installation type surface mount surface mount surface mount surface mount surface mount surface mount surface mount surface mount
Package/casing 44-LCC (J-lead) 44-LCC (J-lead) 48-TQFP 48-TQFP 44-LCC (J-lead) 44-LCC (J-lead) 48-TQFP 48-TQFP
Supplier device packaging 44-PLCC(16.59x16.59) 44-PLCC(16.59x16.59) 48-TQFP(7x7) 48-TQFP(7x7) 44-PLCC(16.59x16.59) 44-PLCC(16.59x16.59) 48-TQFP(7x7) 48-TQFP(7x7)
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