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ST16C650AIQ48 データシート(PDF) 1 Page - Exar Corporation

部品番号 ST16C650AIQ48
部品情報  2.90V TO 5.5V UART WITH 32-BYTE FIFO
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メーカー  EXAR [Exar Corporation]
ホームページ  http://www.exar.com
Logo EXAR - Exar Corporation

ST16C650AIQ48 データシート(HTML) 1 Page - Exar Corporation

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Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
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ST16C650A
2.90V TO 5.5V UART WITH 32-BYTE FIFO
AUGUST 2005
REV. 5.0.1
GENERAL DESCRIPTION
The ST16C650A1 (650A) is a 2.90 to 5.5 volt
Universal Asynchronous Receiver and Transmitter
(UART) with 5 volt tolerant inputs. This device
supports Intel and PC ISA mode data bus interfaces
and is software compatible to industry standard
16C450, 16C550, and ST16C580 UARTs.
The 650A has 32 bytes of TX and RX FIFOs and is
capable of operating up to serial data rates of 3.125
Mbps at 5 volt supply voltage. The internal registers
include the 16C550 register set plus Exar’s enhanced
registers for additional features to support today’s
highly demanding data communication needs. The
enhanced features include automatic hardware and
software flow control, selectable TX and RX trigger
levels, and wireless infrared (IrDA) encoder/decoder.
The device provides a new capability to give user the
ability to program the wireless infrared encoder
output pulse width, hence reducing the power
consumption of a handheld unit.
The ST16C650A device comes in the 44-pin PLCC
and 48-pin TQFP packages in both the commercial
and industrial temperature ranges.
NOTE: 1 Covered by US patents #5,649,122.
FEATURES
Added features in devices with a top mark date code
of "HC YYWW" and newer:
2.90 to 5.5 Volt Operation
5 Volt Tolerant Inputs
Automatic RS485 Half-Duplex Control Output
Programmable Infrared Encoder Pulse Width
Sleep Mode with Wake-up Indicator
Device ID & Revision
Up to 3.125 Mbps Data Rate at 5 Volts
Added feature in devices with a top mark date code of
"I2 YYWW" and newer:
0 ns address hold time
Intel or PC Mode 8-bit Bus Interface
32-byte Transmit and Receive FIFOs
Automatic Hardware (RTS/CTS) Flow Control
Hardware Flow Control Hysteresis
Automatic Software (Xon/Xoff) Flow Control
APPLICATIONS
Battery Operated Electronics
Handheld Terminal
Personal Digital Assistants
Cellular Phones DataPort
Wireless Infrared Data Communications Systems
FIGURE 1. BLOCK DIAGRAM
XTAL1/CLK
XTAL2
Crystal Osc/Buffer
DTR#, DSR#,
RTS#, CTS#,
CD#, RI#
Intel or
PC Data
Bus
Interface
32 Byte TX FIFO
Baud Rate Generator
Infrared Encoder and
Pulse Width Control
Transmitter
UART
Configuration
Regs
IOR
IOR#
32 Byte RX FIFO
Infrared
Decoder
Receiver with Auto
Software Flow Control
Modem Control Signals
TX
RX
CTS Flow
Control
RTS Flow
Control
BRG
Prescaler
CS1
CS0
DDIS#
INT
TXRDY#
RDRDY#
A2:A0
D7:D0
IOW
CS2#
SEL
S1
S2
S3
IRQA
IRQB
IRQC
IOW#
RESET
PC Mode:
COM 1 to 4
Decode Logic


同様の部品番号 - ST16C650AIQ48

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