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EI16C450 Schematic ( PDF Datasheet ) - IMP

Teilenummer EI16C450
Beschreibung Universal Asynchronous Receiver
Hersteller IMP
Logo IMP Logo 




Gesamt 1 Seiten
EI16C450 Datasheet, Funktion
Ei16C450
UART
Semiconductor, Inc.
FEATURES
• 5V Operation
• Full duplex asynchronous receiver and
transmitter
• Easily interfaces to most popular
microprocessors
• Adds or deletes standard asynchronous com-
munication bits (start, stop, and parity ) to or
from a serial data stream
• Independently controlled transmitter, receiver,
line status, and data set interrupts
• Programmable baud rate generator allows
division of any input clock by 1 to (216-1) and
generates the internal 16 x clock
• Independent receiver clock input
• MODEM control functions (CTS, RTS, DSR,
DTR, RI, and DCD)
• Fully programmable serial interface characteris
tics:
- 5, 6, 7, or 8 bit characters
- Even, odd, or no-parity bit generation and
detection
- 1, 1.5, or 2 stop bit generation
- Baud generation (DC to 56k baud)
• Complete status reporting capabilities
• Tri-State® TTL drive capabilities for bi-direc
tional data bus and control bus
• Line break generation and detection
• Internal diagnostic capabilities:
- Loopback controls for communications link fault
isolation
- Break, parity overrun, and framing error simulation
• Fully prioritized interrupt systems controls
DESCRIPTION
The Epic Ei16C450 Universal Asynchronous Receiver
Transmitter (UART) is a CMOS-VLSI communication
device in a single package.
The UART performs serial to parallel conversion
on data characters received from a peripheral
device or a MODEM, and parallel-to-serial
conversions on data characters received from the
CPU. The CPU can read the complete status of the
UART at any time during the functional operation.
Status information reported includes the type and con-
dition of the transfer operation being performed by the
UART, as well as any error conditions (parity, overrun,
framing, or break detect).
• False start bit detection
Part Numbers May Be Marked With "IMP" or "Ei."
PIN CONFIGURATION
D0 1
40 VCC
D1 2
39 RI•
D2 3
38 DCD•
D3 4
37 DSR•
D4 5
36 CTS•
D5 6
35 MR
D6 7
34 OUT1•
D7 8
E 33 DTR•
RCLK 9
i 32 RTS•
SIN 10 1 31 OUT2•
SOUT 11 6 30 INTRPT
CS0 12 C 29 NC
CS1
CS2•
BAUDOUT•
13
14
15
4
5
0
28 A0
27 A1
26 A2
XTAL1 16
25 ADS•
XTAL2 17
24 CSOUT
DOSTR• 18
23 DDIS
DOSTR 19
22 DISTR
VSS 20
21 DISTR•
40-PIN DIP
D5
D6
D7
RCLK
SIN
NC
SOUT
CS0
CS1
CS2•
BAUDOUT•
7
8
9
10
11
12
13
14
15
16
17
Ei16C450
39 MR
38 OUT1•
37 DTR•
36 RTS•
35 OUT2•
34 NC
33 INTRPT
32 NC
31 A0
30 A1
29 A2
N.C. 1
D5 2
D6 3
D7 4
RCLK 5
N.C. 6
RX 7
TX 8
CS0 9
CS1 10
CS2 11
BAUDOUT 12
44-PIN PLCC
Ei16C450
48-PIN TQFP
36 N.C.
35 RESET
34 OP1
33 DTR
32 RTS
31 OP2
30 INT
29 N.C.
28 A0
27 A1
26 A2
25 N.C.
5
For additional information, contact IMP, Inc. at 408.432.9100 or visit www.impweb.com
IMP, Inc. acquired Epic products on January 26, 2001. (see press release at http://www.impweb.com/PRESS/PR012601.htm)





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