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EI16C552 Datasheet Preview

EI16C552 Datasheet

Dual FIFO UART and Parallel Port

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EI16C552 pdf
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.
Part Numbers May Be Marked With "IMP" or "Ei."
PIN CONFIGURATION
SOUT1
DTR1•
RTS1•
CTS1•
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
TXRDY0•
VCC
RTS0•
DTR0•
SOUT0
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Ei16C552-CJ68
60 INT1
59 INT2
58 SLIN•
57 INIT•
56 AFD•
55 STB•
54 GND
53 PD0
52 PD1
51 PD2
50 PD3
49 PD4
48 PD5
47 PD6
46 PD7
45 INT0
44 BD0
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)



IMP
IMP

EI16C552 Datasheet Preview

EI16C552 Datasheet

Dual FIFO UART and Parallel Port

No Preview Available !

EI16C552 pdf
Ei16C552
NOTES ON PIN DESCRIPTION:
1) Pin 4 and Pin 2 can be used by external crystal oscillator in future versions
2) Pin 23 and Pin 43 can be used as OUT20• and OUT21• respectively in future versions
ORDERING INFORMATION
Ei16C552-CJ68
68 Pin PLCC package
LIFE SUPPORT POLICY: Epic products are not to be used in life support devices without prior written
authorization.
Epic Semiconductor Inc. retains the right to make changes these specifications at any time, without notice.
Tri-state® is a Registered Trademark of National Semiconductor,Inc.
IBM PC AT™ and PS2 are Trademark s of International Business Machines.
BLOCK DIAGRAM
CTS0•
DSDR0•
RLSD0•
R10•
SIN0
CS0•
DB0-DB7
CTS1•
DSR1•
RLSD1•
RI1•
SIN1
CS1•
A0-A2
IOW•
IOR•
RESET•
CLK
3
UART
8 #1
8
SELECT
AND
CONTROL
LOGIC
8
UART
#2
RTS0•
DTR0•
SOUT0
INT0
TXRDY0•
RXRDY0*
RTS1•
DTR1•
SOUT1
INT1
TXRDY1•
RXRDY1•
BDO
ERR•
SLCT
BUSY
PE
ACK•
LPTOE•
8
PARALLEL
PORT
PD0-PD7
INIT•
AFD•
STB•
SLIN•
INT2
6 CS2•
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)


Part Number EI16C552
Description Dual FIFO UART and Parallel Port
Maker IMP
Total Page 2 Pages
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