參數(shù)資料
型號(hào)： XR88C681P/40
廠商： Exar Corporation
文件頁(yè)數(shù)： 1/101頁(yè)
文件大小： 0K
描述： IC UART CMOS DUAL 40PDIP
產(chǎn)品變化通告： Leaded UART, V&I Obsolescence 11/Apr/2011
標(biāo)準(zhǔn)包裝： 9
特點(diǎn)： *
通道數(shù)： 2，DUART
FIFO's： 1 字節(jié)，3 字節(jié)
電源電壓： 4.75 V ~ 5.25 V
帶并行端口： 是
帶CMOS： 是
安裝類型： 通孔
封裝/外殼： 40-DIP（0.600"，15.24mm）
供應(yīng)商設(shè)備封裝： 40-PDIP
包裝： 管件
XR88C681
CMOS Dual Channel
UART (DUART)
Rev. 2.11
E
2006
June 2006
FEATURES
D
Two Full Duplex, Independent Channels
D
Asynchronous Receiver and Transmitter
D
Quadruple-Buffered Receivers and Dual Buffered
Transmitters
D
Programmable Stop Bits in 1/16 Bit Increments
D
Internal Bit Rate Generators with More than 23 Bit
Rates
D
Independent Bit Rate Selection for Each Transmitter
and Receiver
D
External Clock Capability
D
Maximum Bit Rate: 1X Clock - 1Mb/s, 16X Clock -
125kb/s
D
Normal, AUTOECHO, Local LOOPBACK and
Remote LOOPBACK Modes
D
Multi-function 16 Bit Counter/Timer
D
Interrupt Output with Eight Maskable Interrupt
Conditions
D
Interrupt Vector Output on Acknowledge (40 Pin DIP
and 44 Pin PLCC Packages Only)
D
Programmable Interrupt Daisy Chain
D
8 General Purpose Outputs (40 Pin DIP and 44 Pin
PLCC Packages Only)
D
7 General Purpose Inputs with Change of States
Detectors on Inputs (40 Pin DIP and 44 Pin PLCC
Packages Only)
D
Multi-Drop Mode Compatible with 8051 Nine Bit
Mode
D
On-Chip Oscillator for Crystal
D
Standby Mode to Reduce Operating Power
D
Compatible with the Motorola MC2681 and
Signetics SCC2692 devices
D
Advanced CMOS Low Power Technology
APPLICATIONS
D
Multimedia Systems
D
Serial to Parallel/Parallel to Serial Converter
D
DTE for Modem Communication Systems
GENERAL DESCRIPTION
The EXAR Dual Universal Asynchronous Receiver and
Transmitter (DUART) is a data communications device that
provides two fully independent full duplex asynchronous
communication channels in a single package. The DUART
is designed for use in microprocessor based systems and
may be used in a polled or interrupt driven environment.
The XR88C681 device offers a single IC solution for the
8080/85, 8086/88, Z80, Z8000, 68xx and 65xx
microprocessor families.
The DUART is fabricated using advanced two layer metal,
with a high performance density EPI/CMOS 1.8 process
to provide high performance and low power consumption,
and is packaged in a 40 pin PDIP, a 28 pin PDIP, and a 44
pin PLCC.
ORDERING INFORMATION
Part No.
Pin Package
Operating
Temperature Range
XR88C681CJ
44 PLCC
0°C to 70°C
XR88C681CN/40
40 CDIP
0°C to 70°C
XR88C681CP/28
28 PDIP
0°C to 70°C
XR88C681CP/40
40 PDIP
0°C to 70°C
XR88C681J
44 PLCC
-40°C to +85°C
XR88C681N/40
40 CDIP
-40°C to +85°C
XR88C681P/28
28 PDIP
-40°C to +85°C
XR88C681P/40
40 PDIP
-40°C to +85°C
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