Intel UPI-C42 Computer Hardware User Manual


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UPI-C42UPI-L42
AC CHARACTERISTICS
T
A
e
0
Cto
a
70
C V
SS
e
0V V
CC
e
V
DD
ea
5V
g
10%
a
33V
g
10% for the UPI-L42 (Continued)
CLOCK
Symbol Parameter Min Max Units
t
CY
UPI-C42UPI-L42 Cycle Time 12 920 ms
(1)
t
CYC
UPI-C42UPI-L42 Clock Period 80 613 ns
t
PWH
Clock High Time 30 ns
t
PWL
Clock Low Time 30 ns
t
R
Clock Rise Time 10 ns
t
F
Clock Fall Time 10 ns
NOTE
1 t
CY
e
15f(XTAL)
AC CHARACTERISTICS DMA
Symbol Parameter Min Max Units
t
ACC
DACK to WR or RD 0 ns
t
CAC
RD or WR to DACK 0 ns
t
ACD
DACK to Data Valid 0 130 ns
t
CRQ
RD or WR to DRQ Cleared 110 ns
(1)
NOTE
1 C
L
e
150 pF
AC CHARACTERISTICS PORT 2
Symbol Parameter f(t
CY
)
(3)
Min Max Units
t
CP
Port Control Setup Before Falling Edge of PROG 115 t
CY
b
28 55 ns
(1)
t
PC
Port Control Hold After Falling Edge of PROG 110 t
CY
125 ns
(2)
t
PR
PROG to Time P2 Input Must Be Valid 815 t
CY
b
16 650 ns
(1)
t
PF
Input Data Hold Time 0 150 ns
(2)
t
DP
Output Data Setup Time 210 t
CY
250 ns
(1)
t
PD
Output Data Hold Time 110 t
CY
b
80 45 ns
(2)
t
PP
PROG Pulse Width 610 t
CY
750 ns
NOTES
1 C
L
e
80 pF
2 C
L
e
20 pF
3 t
CY
e
125 ms
18
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