參數(shù)資料
型號: HMS99C51
廠商: Hynix Semiconductor Inc.
元件分類: 8位微控制器
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8位單晶片微控制器
文件頁數(shù): 39/43頁
文件大小: 533K
代理商: HMS99C51
HMS99C5X Series
Jan. 2003 Ver 1.0
35
Figure 9. AC Testing: Input, Output Waveforms
Figure 10. Float Waveforms
Figure 11. External Clock Cycle
AC Inputs during testing are driven at V
CC
0.5V for a logic ‘1’ and 0.45V for a logic ‘0’.
Timing measurements are made a V
IHmin
for a logic ‘1’ and V
ILmax
for a logic ‘0’.
0.2V
CC
+
0.9
0.2V
CC
0.1
Test Points
V
CC
0.5V
0.45V
V
LOAD
+
0.1
V
LOAD
0.1
Timing Reference Points
0.2V
CC
0.1
V
OH
0.1
V
OL
+
0.1
V
LOAD
For timing purposes a port pin is no longer floating when a 100mV change from load voltage
occurs and begins to float when a 100mV change from the loaded V
OH
/ V
OL
level occurs.
I
OL
/ I
OH
20mA.
t
CHCL
t
CLCH
t
CHCX
t
CLCL
t
CLCX
0.2 V
CC
0.1
0.7 V
CC
V
CC
0.5V
0.45V
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