IMP16C552-CJ68 IMP Inc, IMP16C552-CJ68 Datasheet - Page 24

• Manufacturer Part Number: IMP16C552-CJ68
• Description: Dual Universal Asynchronous Receiver/Transmitter (UART) with 16-BYTE FIFO & Parallel Printer Port
• Manufacturer: IMP Inc

24
Symbol
N
tBLD
tBLD
tLW
tHW
(divide by N,N>3)
BAUDOUT*
Parameter
Baud Rate Divisor
Baud Output Negative
Edge Delay
Baud Output Posisitve
Edge Delay
Baud Output Low Time
Baud Output High Time
(divide by 1)
(divide by 2)
(divide by 3)
BAUDOUT*
BAUDOUT*
BAUDOUT*
XTAL1
t
t
BLD
t
t
BHD
BHD
BLD
FIGURE 5 – Baud Rate General Timing
408-432-9100/www.impweb.com
t
BLD
N
Min
1
75
100
t
BLD
t
BHD
t
BHD
ss
Max
(2
125
125
t
LW
16
=
-1)
2XTAL1 CYCLES
t
LW
t
HW
t
HW
Units
nsec
nsec
nsec
nsec
t
HW
t
t
HW
LW
IMP16C552
IMP16C552
=
(n-2)XTAL1 CYCLES
s
ss
Test Conditions
100pF Load
100pF Load
100pF Load
(fx=8. 0 MHz+2)
100pF Load
(fx=8. 0 MHz+2)
t
LW
© 2002 IMP, Inc.