參數(shù)資料
型號(hào): Q67126-C2001
廠商: SIEMENS AG
元件分類: 8位微控制器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8位CMOS微控制器
文件頁數(shù): 62/65頁
文件大?。?/td> 427K
代理商: Q67126-C2001
Semiconductor Group
62
1997-10-01
C540U
C541U
Figure 35
AC Testing: Input, Output Waveforms
Figure 36
AC Testing : Float Waveforms
Figure 37
Load for D+/D-
AC Inputs during testing are driven at
V
CC
- 0.5 V for a logic ’1’ and 0.45 V for a logic ’0’.
Timing measurements are made at
V
IHmin
for a logic ’1’ and
V
ILmax
for a logic ’0’.
0.45 V
V
CC
0.2
-0.1
+0.9
0.2
CC
V
Test Points
MCT00039
V
CC
-0.5 V
For timing purposes a port pin is no longer floating when a 100 mV change from load voltage
occurs and begins to float when a 100 mV change from the loaded
V
OH
/
V
OL
level occurs.
I
OL
/
I
OH
≥ ±
20 mA
MCT00038
V
Load
V
Load
-0.1 V
+0.1 V
Load
V
Timing Reference
Points
V
OH
-0.1 V
+0.1 V
OL
V
Test Point
30 k
15 k
D.U.T
C
L
2.8 V
1.5 k
*)
S1
MCS03425
C
L
C
C
*) 1.5 k
on D- (low speed) or D+ (full speed) only
L
L
= 50 pF, full speed
= 50 pF, low speed (min. timing)
= 350 pF, low speed (max. timing)
Test
S1
D- / LS
D+ / LS
D- / FS
D+ / FS
Open
Open
Close
Close
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