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EI16C552 Datasheet(PDF) 1 Page - IMP, Inc

Part # EI16C552
Description  Dual FIFO UART and Parallel Port
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Manufacturer  IMP [IMP, Inc]
Direct Link  http://www.ds-imp.com.cn/index.asp
Logo IMP - IMP, Inc

EI16C552 Datasheet(HTML) 1 Page - IMP, Inc

  EI16C552 Datasheet HTML 1Page - IMP, Inc EI16C552 Datasheet HTML 2Page - IMP, Inc  
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Ei16C552
Dual FIFO UART and
Parallel Port
FEATURES
IBM PC AT™ and PS/2™ compatible
Dual channel version of Ei16C550 with
Centronics printer interface
Independent control of transmit, receive, line
status and data set interrupts on each channel
Programmable serial interface characteristics for
each channel:
-5, 6, 7 or 8 bit characters
-Even, odd or no parity bit generation and
dectection
-1, 1.5 or 2 stop bit generation
Programmable baud rate generator divides
CLK input by a divisor between 1 and (216 -1)
Tri-State® TTL drive capability for bidirectional
data bus and control bus on each channel
16 byte FIFO for receiver as well as for trans
mitter.
Advanced CMOS low power technology with
single 5 volt supply
DESCRIPTION
The Ei16C552 is an enhanced dual channel version
of the Ei16C550 Universal Asynchronous Receiver
Transmitter (UART). The device serves two serial
input/output interfaces simultaneously in microcom-
puter or microprocessor based systems. Each chan-
nel performs a serial-to-parallel conversion on data
characters received from peripheral devices or
modems, and a parallel-to-serial conversion on data
characters transmitted by the CPU. The complete
status of each channel of the dual UART can be
read at any time during functional operation by the
CPU. The information obtained includes the type and
condition of the transfer operations being performed,
and error conditions. In addition to its dual commu-
nications interface capabilities, the Ei16C552 pro-
vides the user with a fully bidirectional parallel data
port that fully supports the parallel Centronics type
printer. The parallel port, together with the two serial
ports, provide IBM PC ATand PS2 compatible
computers with a single device to serve the three
system ports.
PIN CONFIGURATION
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
SOUT1
DTR1•
RTS1•
CTS1•
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
TXRDY0•
VCC
RTS0•
DTR0•
SOUT0
INT1
INT2
SLIN•
INIT•
AFD•
STB•
GND
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
INT0
BD0
Ei16C552-CJ68
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
Part Numbers May Be Marked With "IMP" or "Ei."
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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