UPSD3234AV-24U1T STMicroelectronics, UPSD3234AV-24U1T Datasheet - Page 148

• Manufacturer Part Number: UPSD3234AV-24U1T
• Description: Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM
• Manufacturer: STMicroelectronics

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uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
Table 120. External Program Memory AC Characteristics (with the 3V MCU Module)
Note: 1. Conditions (in addition to those in
Table 121. External Clock Drive (with the 5V MCU Module)
Note: 1. Conditions (in addition to those in
Table 122. External Clock Drive (with the 3V MCU Module)
Note: 1. Conditions (in addition to those in
148/170
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Symbol
Symbol
Symbol
LHLL
AVLL
LLAX
LLIV
LLPL
PLPH
PLIV
PXIX
PXIZ
PXAV
AVIV
AZPL
RLRH
WLWH
LLAX2
RHDX
RHDX
RLRH
WLWH
LLAX2
RHDX
RHDX
(2)
2. Interfacing the uPSD323X Devices to devices with float times up to 35ns is permissible. This limited bus contention does not cause
(2)
for 5V devices, and 50pF for 3V devices; C
any damage to Port 0 drivers.
C
for 5V devices, and 50pF for 3V devices; C
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
Oscillator period
High time
Low time
Rise time
Fall time
Oscillator period
High time
Low time
Rise time
Fall time
Parameter
Parameter
Parameter
(1)
(1)
(1)
Table 113., page
Table 112., page
Table 113., page
L
L
for other outputs is 80pF, for 5V devices, and 50pF for 3V devices)
for other outputs is 80pF, for 5V devices, and 50pF for 3V devices)
140, V
140, V
140, V
Min
–10
Min
Min
24MHz Oscillator
43
17
17
22
95
37
40MHz Oscillator
24MHz Oscillator
CC
CC
CC
0
= 3.0 to 3.6V): V
= 4.5 to 5.5V): V
= 3.0 to 3.6V): V
Max
Max
Max
148
80
60
32
SS
SS
SS
= 0V; C
= 0V; C
= 0V; C
L
L
L
2t
3t
for Port 0, ALE and PSEN output is 100pF,
for Port 0, ALE and PSEN output is 100pF;
for Port 0, ALE and PSEN output is 100pF,
t
t
t
CLCL
CLCL
CLCL
t
CLCL
CLCL
CLCL
1/t
1/t
1/t
Variable Oscillator
Variable Oscillator
Variable Oscillator
41.7
Min
–10
Min
Min
CLCL
25
10
10
12
12
CLCL
0
CLCL
– 25
– 25
– 20
– 40
– 30
– 5
= 24 to 40MHz
= 8 to 24MHz
= 8 to 24MHz
t
t
t
t
CLCL
CLCL
CLCL
CLCL
4t
3t
5t
t
CLCL
CLCL
CLCL
CLCL
Max
Max
41.7
Max
125
10
10
12
12
– t
– t
– t
– t
– 10
– 87
– 65
– 60
CLCX
CLCX
CLCX
CLCX
Unit
Unit
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns