UPSD3234AV-24U1T STMicroelectronics, UPSD3234AV-24U1T Datasheet - Page 140

• 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
DC AND AC PARAMETERS
This section summarizes the operating and mea-
surement conditions, and the DC and AC charac-
teristics of the device. The parameters in the DC
and AC Characteristic tables that follow are de-
rived from tests performed under the Measure-
Table 112. Operating Conditions (5V Devices)
Table 113. Operating Conditions (3V Devices)
Table 114. AC Letter Symbols for Timing
Note: Example: t
140/170
Symbol
Symbol
V
V
W
Q
M
A
C
D
N
P
R
B
L
T
T
I
CC
CC
A
A
Address
Clock
Input Data
Instruction
ALE
RESET Input or Output
PSEN signal
Output Data
RD signal
WR signal
V
Output Macrocell
AVLX
STBY
Supply Voltage
Ambient Operating Temperature (Industrial)
Ambient Operating Temperature (Commercial)
Supply Voltage
Ambient Operating Temperature (Industrial)
Ambient Operating Temperature (Commercial)
= Time from Address Valid to ALE Invalid.
Output
Parameter
Parameter
ment Conditions summarized in the relevant
tables. Designers should check that the operating
conditions in their circuit match the measurement
conditions when relying on the quoted parame-
ters.
Table 115. AC Signal Behavior Symbols for
Timing
Note: Example: t
PW
H
V
X
Z
L
t
Time
Logic Level Low or ALE
Logic Level High
Valid
No Longer a Valid Logic Level
Float
Pulse Width
AVLX
Min.
Min.
–40
–40
4.5
3.0
0
0
= Time from Address Valid to ALE Invalid.
Max.
Max.
5.5
3.6
85
70
85
70
Unit
Unit
°C
°C
°C
°C
V
V