PSD834F3A-12UI View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
PSD834F3A-12UI Datasheet PDF : 128 Pages
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AC/DC parameters
PSD8XXFX
Figure 44. READ timing
ALE /AS
A/D
MULTIPLEXED
BUS
ADDRESS
NON-MULTIPLEXED
BUS
DATA
NON-MULTIPLEXED
BUS
CSI
RD
(PSEN, DS)
tAVLX
tLXAX1
tLVLX
ADDRESS
VALID
tAVQV
ADDRESS
VALID
tSLQV
tRLQV
tRLRH
DATA
VALID
DATA
VALID
tRHQX
tRHQZ
E
R/W
tTHEH
tEHEL
tELTL
tAVPV
ADDRESS OUT
AI02895
1. tAVLX and tLXAX are not required for 80C251 in Page mode or 80C51XA in Burst mode.
Table 56. READ timing (5 V devices)
Symbol
Parameter
Conditions
-70
Min Max
-90
Min Max
-15
Turbo
Min Max off
Unit
tLVLX
tAVLX
tLXAX
tAVQV
tSLQV
tRLQV
tRHQX
tRLRH
tRHQZ
tEHEL
ALE or AS pulse width
Address setup time
Address hold time
Address valid to data valid
CS valid to data valid
RD to data valid 8-bit bus
RD or PSEN to data valid
8-bit bus, 8031, 80251
RD data hold time
RD pulse width
RD to data high-Z
E pulse width
15
20
28
ns
(1)
4
6
10
ns
(1)
7
8
11
ns
(1)
70
90
150 + 10 ns
75
100
150
ns
(2)
24
32
40
ns
(3)
31
38
45
ns
(4)
0
0
0
ns
(4)
27
32
38
ns
(4)
20
25
30
ns
27
32
38
ns
106/128
Doc ID 7833 Rev 7
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