參數(shù)資料
型號(hào): PSD4235G2-90UT
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 256K X 16 FLASH, 52 I/O, PIA-GENERAL PURPOSE, PQFP80
封裝: PLASTIC, TQFP-80
文件頁數(shù): 81/100頁
文件大?。?/td> 933K
代理商: PSD4235G2-90UT
81/100
PSD4235G2
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 56. Operating Conditions
Table 57. AC Signal Letters for PLD Timings
Note: Example: tAVLX = Time from Address Valid to ALE Invalid.
Table 58. AC Signal Behavior Symbols for PLD
Timings
Note: Example: tAVLX = Time from Address Valid to ALE Invalid.
Table 59. AC Measurement Conditions
Note: 1. Output Hi-Z is defined as the point where data out is no longer driven.
Symbol
Parameter
Min.
Max.
Unit
VCC
Supply Voltage
4.5
5.5
V
TA
Ambient Operating Temperature (industrial)
–40
85
°C
Ambient Operating Temperature (commercial)
0
70
°C
A
Address Input
C
CEout Output
D
Input Data
E
E Input
G
Internal WDOG_ON signal
I
Interrupt Input
L
ALE Input
N
Reset Input or Output
P
Port Signal Output
QOutput Data
RWR, UDS, LDS, DS, IORD, PSEN Inputs
S
Chip Select Input
TR/W Input
W
Internal PDN Signal
B
VSTBY Output
M
Output Macrocell
tTime
L
Logic Level Low or ALE
H
Logic Level High
V
Valid
X
No Longer a Valid Logic Level
ZFloat
PW
Pulse Width
Symbol
Parameter
Min.
Max.
Unit
CL
Load Capacitance
30
pF
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