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
8
RTS0•
DTR0•
SOUT0
8
8
UART
#1
INT0
TXRDY0•
RXRDY0*
RTS1•
DTR1•
UART
#2
3
SELECT
AND
CONTROL
LOGIC
SOUT1
INT1
TXRDY1•
RXRDY1•
•
8
BDO
ERR•
SLCT
BUSY
PE
ACK•
LPTOE•
CS2•
PARALLEL
PORT
PD0-PD7
INIT•
AFD•
STB•
SLIN•
INT2
6
IMP [ IMP, INC ]
