SCN2651 데이터 시트보기 (PDF) - Philips Electronics
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SCN2651 Datasheet PDF : 15 Pages
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Philips Semiconductors
Programmable communications interface (PCI)
Product specification
SCN2651
DESCRIPTION
The Philips Semiconductors SCN2651 PCI is a universal
synchronous/asynchronous data communications controller chip
designed for microcomputer systems. It interfaces directly to the
Philips Semiconductors SCN2650 microprocessor and may be used
in a polled or interrupt driven system environment. The SCN2651
accepts programmed instructions from the microprocessor and
supports many serial data communication disciplines, synchronous
and asynchronous, in the full or half-duplex mode.
The PCI serializes parallel data characters received from the
microprocessor for transmission. Simultaneously, it can receive
serial data and convert it into parallel data characters for input to the
microcomputer.
The SCN2651 contains a baud rate generator which can be
programmed to either accept an external clock or to generate
internal transmit or receive clocks. Sixteen different baud rates can
be selected under program control when operating in the internal
clock mode.
The PCI is constructed using Philips Semiconductors n-channel
silicon gate depletion load technology and is packaged in a 28-pin
DIP.
FEATURES
• Synchronous operation
– 5- to 8-bit characters
– Single or double SYN operation
– Internal character synchronization
– Transparent or non-transparent mode
– Automatic SYN or DLE-SYN insertion
– SYN or DLE stripping
– Odd, even, or no parity
– Local or remote maintenance loopback mode
– Baud rate: DC to 1Mbps (1X clock)
• Asynchronous operation
– 5- to 8-bit characters
– 1, 1-1/2 or 2 stop bits
– Odd, even, or no parity
– Parity, overrun and framing error detection
– Line break detection and generation
– False start bit detection
– Automatic serial echo mode
– Local or remote maintenance loopback mode
– Baud rate: DC to 1Mbps
(1X clock)
DC to 62.5kbps (16X clock)
DC to 15.625kbps
(64X clock)
ORDERING CODE
PACKAGES
28-Pin Plastic Dual In-Line Package (DIP)
PIN CONFIGURATIONS
D2 1
28 D1
D3 2
27 D0
RxD 3
GND 4
26 VCC
25 RxC
D4 5
24 DTR
D5 6
23 RTS
D6 7
D7 8
22 DSR
DIP
21 RESET
TxC 9
20 BRCLK
A1 10
19 TxD
CE 11
18 TxEMT/DSCHG
A0 12
17 CTS
R/W 13
16 DCD
RxRDY 14
15 TxRDY
TOP VIEW
SD00049
OTHER FEATURES
• Internal or external baud rate clock
• 16 internal rates – 50 to 19,200 baud
• Double buffered transmitter and receiver
• Full or half duplex operation
• TTL compatible inputs and outputs
• Single 5V power supply
• No system clock required
• 28-pin dual in-line package
APPLICATIONS
• Intelligent terminals
• Network processors
• Front-end processors
• Remote data concentrators
• Computer to computer links
• Serial peripherals
VCC = 5V +5%
Commercial
Industrial
0°C to +70°C
-40°C to +85°C
SCN2651CC1N28
Not available
DWG #
SOT117-2
1994 Apr 27
1
853-1067 12793
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