psd934f2v-20mi STMicroelectronics, psd934f2v-20mi Datasheet - Page 77

• Manufacturer Part Number: psd934f2v-20mi
• Description: Flash In-system Programmable Isp Peripherals For 8-bit Mcus
• Manufacturer: STMicroelectronics

Microcontroller Interface – PSD9XXFV AC/DC Parameters
(3 V Versions)
Preliminary Information
Read Timing
NOTES: 1. RD timing has the same timing as DS, LDS, UDS, and PSEN signals.
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
LVLX
AVLX
LXAX
AVQV
RLRH
RHQZ
EHEL
THEH
ELTL
AVPV
SLQV
RLQV
RHQX
2. RD and PSEN have the same timing for 8031.
3. Any input used to select an internal PSD813F function.
4. In multiplexed mode latched address generated from ADIO delay to address output on any Port.
5. RD timing has the same timing as DS, LDS, and UDS signals.
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
R/W Setup Time to Enable
R/W Hold Time After Enable
Address Input Valid to
Address Output Delay
(3 V Versions)
Parameter
Conditions
(Note 3)
(Note 3)
(Note 3)
(Note 5)
(Note 2)
(Note 1)
(Note 1)
(Note 1)
(Note 4)
Min
40
26
38
15
9
9
0
0
-12
Max
120
120
35
45
38
33
Min
26
10
12
40
45
18
0
0
-15
Max
150
150
35
50
40
35
Min
30
12
14
45
52
20
0
0
-20
Max
200
200
40
55
45
40
Add 20
Turbo
Off
PSD9XX Family
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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