Philips Semiconductors - PIP - SCN2681; Dual asynchronous receiver/transmitter (DUART)
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Line break detection and generation
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Programmable channel mode
– Normal (full-duplex)
– Automatic echo
– Local loopback
– Remote loopback
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Multi-function programmable 16-bit counter/timer
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Multi-function 7-bit input port
– Can serve as clock or control inputs
– Change of state detection on four inputs
– 100k
typical pull-up resistor
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Multi-function 8-bit output port
– Individual bit set/reset capability
– Outputs can be programmed to be status/interrupt signals
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Versatile interrupt system
– Single interrupt output with eight maskable interrupting conditions
– Output port can be configured to provide a total of up to six separate wire-ORable interrupt outputs
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Maximum data transfer: 1X – 1MB/sec, 16X – 125kB/sec
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Automatic wake-up mode for multidrop applications
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Start-end break interrupt/status
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Detects break which originates in the middle of a character
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On-chip crystal oscillator
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Single +5V power supply
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Commercial and industrial temperature ranges available
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DIP and PLCC packages
Page
count
File
size
(kB)
Datasheet
SCN2681
Dual asynchronous
receiver/transmitter
(DUART)
9/4/1998
Product
specification
30
224
Type number
Package
Application
FUNCTION
Operating
temp.(Cel)
No.
of
Pins
Receiver/Transmitter
Type
SCN2681AC1A44
(DIP24)
Data
Communication
Receivers/Transmitters 0~70
44
Dual UARTs
SCN2681AC1N28
(DIP24)
Data
Communication
Receivers/Transmitters 0~70
28
Dual UARTs
SCN2681AC1N40
(DIP24)
Data
Communication
Receivers/Transmitters 0~70
40
Dual UARTs
SCN2681AE1A44
(DIP24)
Data
Communication
Receivers/Transmitters -40~85
44
Dual UARTs
SCN2681AE1N28
(DIP24)
Data
Communication
Receivers/Transmitters -40~85
28
Dual UARTs
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