Ac characteristics – Intel UPI-C42 User Manual
Page 18
UPI-C42 UPI-L42
AC CHARACTERISTICS
T
A
e
0 C to
a
70 C V
SS
e
0V V
CC
e
V
DD
e a
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
m
s
(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