ST & T UPSD3212C - Manual (Page 133)

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uPSD3212A, uPSD3212C, uPSD3212CV
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- 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 109. Operating Conditions (5V Devices)
Table 110. Operating Conditions (3V Devices)
Table 111. AC Signal Letter Symbols for Timing
Note: Example: t
AVLX
= Time from Address Valid to ALE Invalid.
Table 112. AC Signal Behavior Symbols for
Timing
Note: Example: t AVLX = Time from Address Valid to ALE Invalid.
Symbol Parameter Min. Max. Unit
V
CC Supply Voltage 4.5 5.5 V
T
A
Ambient Operating Temperature (Industrial) –40 85 °C
Ambient Operating Temperature (Commercial) 0 70 °C
Symbol Parameter Min. Max. Unit
V
CC
Supply Voltage 3.0 3.6 V
T
A
Ambient Operating Temperature (Industrial) –40 85 °C
Ambient Operating Temperature (Commercial) 0 70 °C
Signal Letters
A Address
C Clock
D Input Data
I Instruction
L ALE
N RESET Input or Output
P PSEN signal
Q Output Data
R RD signal
W WR signal
B V
STBY
Output
M Output Macrocell
Signal Behavior
t Time
L Logic Level Low or ALE
H Logic Level High
V Valid
X No Longer a Valid Logic Level
Z Float
PW Pulse Width