參數(shù)資料
型號: TS80C51RA2-LCER
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: High Performance 8-bit Microcontrollers
中文描述: 8-BIT, 30 MHz, MICROCONTROLLER, PQFP44
封裝: 1.40 MM HEIGHT, VQFP-44
文件頁數(shù): 71/74頁
文件大?。?/td> 903K
代理商: TS80C51RA2-LCER
Rev. C - 06 March, 2001
71
TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
10.5.11. External Clock Drive Characteristics (XTAL1)
10.5.12. External Clock Drive Waveforms
Figure 30. External Clock Drive Waveforms
10.5.13. AC Testing Input/Output Waveforms
Figure 31. AC Testing Input/Output Waveforms
AC inputs during testing are driven at V
CC
- 0.5 for a logic “1” and 0.45V for a logic “0”. Timing measurement
are made at V
IH
min for a logic “1” and V
IL
max for a logic “0”.
10.5.14. Float Waveforms
Figure 32. Float Waveforms
Table 46. AC Parameters
Symbol
Parameter
Min
Max
Units
T
CLCL
Oscillator Period
25
ns
T
CHCX
High Time
5
ns
T
CLCX
Low Time
5
ns
T
CLCH
Rise Time
5
ns
T
CHCL
Fall Time
5
ns
T
CHCX
/T
CLCX
Cyclic ratio in X2 mode
40
60
%
V
CC
-0.5 V
0.45 V
0.7V
CC
0.2V
CC
-0.1 V
T
CHCL
T
CLCX
T
CLCL
T
CLCH
T
CHCX
0.45 V
V
CC
-0.5 V
0.2V
CC
+0.9
0.2V
CC
-0.1
INPUT/OUTPUT
V
OL
+0.1 V
V
OH
-0.1 V
FLOAT
V
LOAD
V
LOAD
+0.1 V
V
LOAD
-0.1 V
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