參數(shù)資料
型號: ELANSC300-33VI
廠商: Advanced Micro Devices, Inc.
元件分類: 32位微控制器
英文描述: Highly Integrated, Low-Power, 32-Bit Microcontroller
中文描述: 高度集成,低功耗,32位微控制器
文件頁數(shù): 98/139頁
文件大?。?/td> 1388K
代理商: ELANSC300-33VI
98
élanSC300 Microcontroller Data Sheet
P R E L I M I N A R Y
AC SWITCHING CHARACTERISTICS AND WAVEFORMS
The AC specifications provided in the AC characteris-
tics tables that follow consist of output delays, input
setup requirements, and input hold requirements. Fig-
ure 31 provides a key to the switching waveforms.
AC specifications measurement is defined by the fig-
ures that follow each timing table.
Output delays are specified with minimum and maxi-
mum limits, measured as shown. The minimum delay
times are hold times provided to external circuitry.
Input setup and hold times are specified as minimums,
defining the smallest acceptable sampling window.
Within the sampling window, a synchronous input sig-
nal must be stable for correct microcontroller operation.
Figure 31.
Key to Switching Waveforms
AC Switching Test Waveforms
Notes:
AC Testing: Inputs are driven at 3 V for a logic 1 and 0 V for a logic 0.
WAVEFORMS
INPUTS
OUTPUTS
Must be Steady
Will be Steady
May Change from H to L
Will be Changing from H to L
May Change from L to H
Will be Changing from L to H
Don’t Care, Any Change Permitted
Changing, State Unknown
Does Not Apply
Center Line is High-Impedance “Off” State
VCC
÷
2
VCC
÷
2
V
IH
= VCC
Input
V
IL
= 0
Test Points
Output
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