參數(shù)資料
型號: ELANSC410
英文描述: Single Synchronous Buck Pulse-Width Modulation (PWM) Controller; Temperature Range: 0&degC to 70°C; Package: 16-QFN
中文描述: ElanSC410 - ElanSC410框圖
文件頁數(shù): 106/119頁
文件大?。?/td> 1167K
代理商: ELANSC410
lanSC310 Microcontroller Data Sheet
87
PREL IMINARY
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:
For 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
VIH = VCC
Input
VIL = 0
Test Points
Output
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