UPSD3234AV-24U1T STMicroelectronics, UPSD3234AV-24U1T Datasheet - Page 147
UPSD3234AV-24U1T
Manufacturer Part Number
UPSD3234AV-24U1T
Description
Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM
Manufacturer
STMicroelectronics
Datasheet
1.UPSD3234AV-24U1T.pdf
(170 pages)
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Figure 75. External Program Memory READ Cycle
Table 119. External Program Memory AC Characteristics (with the 5V MCU Module)
Note: 1. Conditions (in addition to those in
t
t
t
t
t
t
t
t
t
t
t
t
Symbol
LHLL
AVLL
LLAX
LLIV
LLPL
PLPH
PLIV
PXIX
PXIZ
PXAV
AVIV
AZPL
PORT 0
PORT 2
PSEN
(2)
2. Interfacing the uPSD323X Devices to devices with float times up to 20ns is permissible. This limited bus contention does not cause
(2)
ALE
C
any damage to Port 0 drivers.
L
for other outputs is 80pF
ALE pulse width
Address set-up to ALE
Address hold after ALE
ALE Low to valid instruction in
ALE to PSEN
PSEN pulse width
PSEN to valid instruction in
Input instruction hold after PSEN
Input instruction float after PSEN
Address valid after PSEN
Address to valid instruction in
Address float to PSEN
t LHLL
Parameter
t AVLL
A8-A11
A0-A7
t LLAX
t LLPL
(1)
Table 112., page
t AVIV
t AZPL
uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
t LLIV
t PLIV
t PLPH
140, V
Min
40MHz Oscillator
35
10
10
10
60
20
–5
CC
0
INSTR
= 4.5 to 5.5V): V
IN
t PXIX
Max
t PXIZ
55
30
15
70
SS
t PXAV
= 0V; C
L
2t
3t
for Port 0, ALE and PSEN output is 100pF;
t
t
t
CLCL
CLCL
CLCL
t
1/t
CLCL
CLCL
CLCL
Variable Oscillator
Min
CLCL
–5
A8-A11
0
A0-A7
– 15
– 15
– 15
– 15
– 15
– 5
= 24 to 40MHz
4t
3t
5t
t
CLCL
CLCL
CLCL
CLCL
Max
– 10
– 45
– 45
– 55
AI06848
147/170
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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